A tool holder mounting structure for machining cavities on a vertical lathe

Abstract

This utility model provides a tool holder mounting structure for vertical lathe machining cavities, particularly suitable for situations where the cavity inlet diameter is smaller than the cavity inner diameter, and the difference between the inlet diameter and the inner diameter is significant. It allows adjustment of the tool holder position without increasing the overhang length, facilitating the machining of the larger diameter portion of the cavity. This improves the stress on the tool holder and reduces tool breakage. The structure relates to the field of machining technology. The tool holder mounting structure for vertical lathe machining cavities includes a vertical lathe column, a tool plate, and a lead screw. The tool plate is mounted on the lower end of the vertical lathe column and is slidably connected to the column along a horizontal straight line. The tool holder is fixed to one end of the tool plate along its sliding direction by a tool holder fastening bolt. The lead screw is mounted on the vertical lathe column and engages with the tool plate through its thread. The vertical lathe column is provided with a locking mechanism that engages with the tool plate to lock its relative position. This utility model is beneficial for improving the machining efficiency and quality of cavities.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, specifically a tool holder mounting structure for machining cavities on a vertical lathe. Background Technology

[0002] Large cavity-shaped workpieces are generally machined using vertical lathes. In some large cavity-shaped workpieces, the cavity inlet diameter is smaller than the cavity inner diameter. Because the inner cavity increases in size during turning, the cutting tool holder must also be adjusted and extended simultaneously. However, the initial installation length of the cutting tool holder cannot be too long due to the hole diameter at the workpiece opening (excessive length would prevent the cutting tool holder from entering the cavity through the opening).

[0003] Existing tool holders are typically installed as follows: the tool holder is fixed to one end of the cutter plate in the horizontal direction by tool holder fastening bolts, and the cutter plate is fixed to the vertical lathe column by bolts. In this installation method, to ensure the cutter plate can pass through the cavity inlet, the design length of the cutter plate cannot exceed the cavity opening diameter. When machining larger diameter sections of the cavity, the tool holder length can only be adjusted by loosening the tool holder fastening bolts, increasing the distance from the tool tip to the end of the tool holder fixed to the cutter plate. This results in a larger overhang length for the tool holder. Since the tool holder is relatively weaker than the cutter plate, the applicant found that this method, when machining larger diameter sections of the cavity, especially when the difference between the cavity inlet diameter and the cavity inner diameter is large, leads to increased overhang length, making the tool holder prone to deformation, vibration, and tool breakage. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a tool holder mounting structure for vertical lathe machining cavities that can adjust the position of the tool holder without increasing the overhang length of the tool holder, so as to facilitate machining of the larger diameter of the cavity, thereby improving the stress on the tool holder and reducing the occurrence of tool breakage.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a tool holder mounting structure for machining cavities on a vertical lathe, including a vertical lathe column, a tool plate and a lead screw;

[0006] The blade is installed at the lower end of the vertical car column, and the blade is slidably connected to the vertical car column along a horizontal straight line.

[0007] The cutting tool holder is arranged along the sliding direction of the cutting tool plate, and is fixed to one end of the cutting tool plate along its sliding direction by a tool holder fastening bolt;

[0008] The lead screw is mounted on the vertical car column and engages with the cutter plate through its thread to push the cutter plate to slide relative to the vertical car column along the horizontal straight line direction;

[0009] The upright column of the car is equipped with a locking mechanism that cooperates with the blade plate to lock the relative position of the blade plate.

[0010] Furthermore, the blade plate is provided with two T-shaped heads arranged on both sides of the lathe tool bar, and the lower end face of the vertical lathe column is provided with two T-shaped guide grooves that correspond one-to-one with the two T-shaped heads and slide in cooperation with them. The T-shaped guide grooves extend along the horizontal straight line direction. The blade plate is slidably connected to the vertical lathe column along the horizontal straight line direction by the correspondence and sliding cooperation between the two T-shaped heads and the two T-shaped guide grooves.

[0011] Furthermore, the T-shaped head and the blade plate are separate structures, and the T-shaped head is connected to the blade plate by screws.

[0012] Furthermore, the locking mechanism includes a first locking screw disposed on the outside of one of the T-shaped guide grooves and whose end abuts against the outer surface of the T-shaped head inside the T-shaped guide groove, and a second locking screw disposed on the outside of the other T-shaped guide groove and whose end abuts against the outer surface of the T-shaped head inside the T-shaped guide groove. The first locking screw and the second locking screw are respectively threaded to the upright column of the vertical carriage through their threads.

[0013] Furthermore, there are multiple first and second locking screws, which are arranged at intervals along the sliding direction of the blade.

[0014] Furthermore, the upright column includes an upright column body and a lower end plate detachably connected to the lower end of the upright column, the lower end surface of the lower end plate forming the lower end surface of the upright column.

[0015] Furthermore, the lower end plate is provided with an upwardly extending connecting part, the lower end face of the upright column body is provided with a slot, the connecting part is inserted into the slot, and is pressed and fixed in the slot by multiple tightening screws provided on the side wall of the slot and whose ends abut against the side of the connecting part. The tightening screws are arranged in sequence at intervals to form an upward-opening U-shape.

[0016] Furthermore, the connecting part is a U-shaped structure with the opening facing upwards.

[0017] The beneficial effects of this utility model are as follows: The tool holder mounting structure for machining cavities using a vertical lathe allows for adjustment of the tool holder 4 position. When machining a larger diameter section inside the cavity, the screw 3 can be rotated to push the tool plate 2 to slide horizontally relative to the vertical lathe column 1. This allows the end of the tool plate 2 with the tool holder 4 mounted to gradually move away from the vertical lathe column 1, thus adjusting the position of the tool holder 4. This eliminates the need to loosen the tool holder fastening bolts to adjust the overhang length of the tool holder 4, achieving the desired adjustment. The tool holder 4 experiences better force distribution, mitigating issues such as deformation, vibration, and tool breakage during machining, especially when machining workpieces where the cavity inlet diameter is smaller than the cavity inner diameter, or where the difference between the inlet and inner diameters is significant. This improves machining efficiency and quality. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 yes Figure 1 The left view;

[0020] Figure 3 yes Figure 1 The right view;

[0021] Figure 4 This is a structural schematic diagram of the lower end plate;

[0022] The figure shows: vertical lathe column 1, blade 2, lead screw 3, lathe tool bar 4, tool bar fastening bolt 5, locking mechanism 6, tightening screw 7, vertical lathe column body 11, T-shaped guide groove 12, lower end plate 13, slot 14, T-shaped head 21, first locking screw 61, second locking screw 62, and connecting part 131. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] like Figures 1 to 3 As shown, this utility model discloses a lathe tool holder mounting structure for machining cavities on a vertical lathe, comprising a vertical lathe column 1, a tool plate 2, and a lead screw 3. The tool plate 2 is mounted on the lower end of the vertical lathe column 1 and is slidably connected to the vertical lathe column 1 along a horizontal straight line. The lead screw 3 is mounted on the vertical lathe column 1 and engages with the tool plate 2 through its thread to push the tool plate 2 to slide relative to the vertical lathe column 1 along the horizontal straight line. The vertical lathe column 1 is provided with a locking mechanism 6 that engages with the tool plate 2 to lock the relative position of the tool plate 2. The tool holder 4 is arranged along the sliding direction of the tool plate 2 and is fixed to one end of the tool plate 2 along its sliding direction by a tool holder fastening bolt.

[0025] The direction of the horizontal line can be any horizontal line.

[0026] The locking mechanism 6 can be any locking mechanism found on existing lathes. In some embodiments, the locking mechanism 6 employs a stud that abuts against the tool plate 2. When locking, the stud is screwed in so that its end abuts against and presses against the tool plate 2, thereby preventing the tool plate from moving due to friction. In some embodiments, the locking mechanism 6 employs a pin that inserts into the tool plate 2. In some embodiments, the lead screw 3 is a self-locking lead screw, that is, the locking mechanism is formed by the lead screw.

[0027] like Figure 1 As shown, in the tool holder mounting structure of this utility model, since the tool plate 2 is slidably connected to the vertical lathe column 1 along a horizontal straight line, and the vertical lathe column 1 is equipped with a lead screw 3 that engages with the tool plate 2 through its thread to push the tool plate 2 to slide relative to the vertical lathe column 1 along the horizontal straight line, when machining a larger diameter position inside the cavity, the tool plate 2 can be pushed to slide relative to the vertical lathe column 1 along the horizontal straight line by rotating the lead screw 3, so that the end of the tool plate 2 that mounts the tool holder 4 gradually moves away from the vertical lathe column 1, thereby adjusting the position of the tool holder 4. After the position of the tool plate 2 is adjusted, the locking mechanism 6 is used to lock and fix the position of the tool plate 2 to prevent the tool plate from shifting during machining. When machining a larger diameter position inside the cavity, the above mounting structure does not require loosening the tool holder fastening bolt 5 to adjust the overhang length of the tool holder 4, and the position of the tool holder 4 can be adjusted. The tool holder 4 is subjected to better force, thus improving the problems of easy deformation, vibration and tool breakage during machining, which is beneficial to improving the machining efficiency and machining quality of the cavity. In addition, the original method of installing the cutting tool holder generally places the tool holder fastening bolt 5 as far away from the vertical car column 1 as possible. The original method of adjusting the suspended length of the cutting tool holder 4 by adjusting the tool holder fastening bolt 5 is affected by the diameter of the cavity orifice, making it extremely inconvenient to adjust the tool. The above structure also makes it easier to place the lead screw 3 and the locking mechanism 6 closer to the vertical car column 1, so that it is less obstructed by the cavity orifice and it is easier to adjust the position of the cutting tool holder 4.

[0028] The blade plate 2 and the vertical carriage column 1 can be slidably connected along the horizontal straight direction through the cooperation of guide grooves and guide columns. For example... Figure 3As shown, in this embodiment of the invention, the blade plate 2 is slidably connected to the vertical lathe column 1 along the horizontal straight direction in the following manner: The blade plate 2 is provided with two T-shaped heads 21 arranged on both sides of the lathe tool rod 4; the lower end face of the vertical lathe column 1 is provided with two T-shaped guide grooves 12 that correspond one-to-one with and slidably engage with the two T-shaped heads 21. The T-shaped guide grooves 12 extend along the horizontal straight direction. The blade plate 2 is slidably connected to the vertical lathe column 1 along the horizontal straight direction through the one-to-one correspondence and slidable engagement of the two T-shaped heads 21 and the two T-shaped guide grooves 12. The slidable engagement of the T-shaped heads 21 and the T-shaped guide grooves 12 provides better load-bearing capacity, better supporting the weight of the blade plate and the lathe tool rod, as well as the vertical force. Furthermore, the presence of T-shaped heads 21 on both sides of the lathe tool rod 4 improves the stress distribution on the blade plate. Therefore, the above structure helps ensure the connection stability of the blade plate.

[0029] The T-shaped head 21 and the blade plate 2 can be an integral or separate structure. For ease of machining, the T-shaped head 21 and the blade plate 2 are separate structures, with the T-shaped head 21 connected to the blade plate 2 by screws. This connection structure also facilitates replacement of the T-shaped head 21 when it wears or is damaged.

[0030] One side of the two T-shaped guide grooves 12 facing each other is the inner side of the T-shaped guide groove, and the other side is the outer side of the T-shaped guide groove. For example... Figure 3 As shown in this embodiment of the present invention, the locking mechanism 6 includes a first locking screw 61 disposed on the outside of one of the T-shaped guide grooves 12 and whose end abuts against the outer side of the T-shaped head 21 inside the T-shaped guide groove 12; and a second locking screw 62 disposed on the outside of the other T-shaped guide groove 12 and whose end abuts against the outer side of the T-shaped head 21 inside the T-shaped guide groove 12. The first locking screw 61 and the second locking screw 62 are respectively threaded to the vertical column 1 of the vertical carriage. By turning the first locking screw 61 and the second locking screw 62, the first locking screw 61 and the second locking screw 62 can be adjusted to move, thereby loosening or pressing the corresponding T-shaped head, and realizing the locking and fixing of the blade plate. There can be one or more first locking screws 61 and second locking screws 62. In this embodiment of the present invention, there are multiple first locking screws 61 and second locking screws 62, which are arranged at intervals along the sliding direction of the T-shaped guide groove 12 to lock the blade plate more stably. When there are multiple first locking screws 61 and second locking screws 62, it is generally better to arrange the first locking screws 61 and the second locking screws 62 in a one-to-one correspondence.

[0031] The aforementioned locking mechanism can be locked from the outside of the two T-heads 21, which not only improves the locking effect but also makes the connection of the cutter plate 2 more stable after locking. The connection rigidity between the cutter plate and the vertical lathe column is better, and it is less likely to cause positional changes or deformation due to external forces. This helps to ensure the machining accuracy of the lathe tool holder and also helps to improve the problems of deformation, vibration and tool breakage during the machining process.

[0032] like Figure 2 As shown, the upright column 1 includes an upright column body 11 and a lower end plate 13 detachably connected to the lower end of the upright column 1. The lower end surface of the lower end plate 13 forms the lower end surface of the upright column 1. That is, a T-shaped guide groove 12 is provided on the lower end surface of the lower end plate 13. The lower end plate 13 is detachable, so when machining the T-shaped guide groove 12, the lower end plate 13 can be disassembled and machined separately, making it more convenient to machine the T-shaped guide groove. The detachable connection can be achieved by bolt connection, pin connection, etc.

[0033] In this utility model, such as Figure 1 As shown, preferably, the lower end plate 13 is provided with an upwardly extending connecting portion 131, and the lower end face of the upright column body 11 is provided with a slot 14. The connecting portion 131 is inserted into the slot 14 and is pressed and fixed in the slot 14 by multiple tightening screws 7 arranged on the side wall of the slot 14 and whose ends abut against the side of the connecting portion 131. The tightening screws 7 are arranged in a U-shape with an upward opening. The above connection method can better eliminate the fitting gap between the lower end plate 13 and the upright column body 11 in the horizontal direction perpendicular to the sliding direction of the blade. The upward-opening U-shaped arrangement of the tightening screws 7 also makes it less likely that the lower end plate 13 will swing up and down due to force. Therefore, the above structure can ensure better connection rigidity between the lower end plate and the upright column body.

[0034] The connecting part 131 can be a square structure. In this embodiment of the invention, for example... Figure 4 As shown, the connecting part 131 is a U-shaped structure with the opening facing upwards. With the same material and length and width dimensions, the U-shaped structure is lighter, so it is less likely to slide down under the action of gravity, and it is also conducive to making it more stably connected in the slot of the upright column body.

Claims

1. A tool bar mounting structure for a vertical lathe machining cavity, characterized by: It includes a vertical column (1), a blade (2), and a lead screw (3); The blade (2) is installed at the lower end of the vertical car column (1), and the blade (2) is slidably connected to the vertical car column (1) along the horizontal straight line. The cutting tool bar (4) is arranged along the sliding direction of the cutting tool plate (2), and is fixed to one end of the cutting tool plate (2) along its sliding direction by the cutting tool bar fastening bolt (5); The lead screw (3) is mounted on the vertical car column (1) and engages with the cutter plate (2) through its thread to push the cutter plate (2) to slide relative to the vertical car column (1) along the horizontal straight line direction; The upright column (1) of the car is provided with a locking mechanism (6) that cooperates with the blade plate (2) to lock the relative position of the blade plate (2).

2. A tool bar mounting structure for a vertical lathe machining cavity tool bar according to claim 1, characterized in that: The blade plate (2) is provided with two T-shaped heads (21) arranged on both sides of the cutting tool bar (4). The lower end face of the vertical car column (1) is provided with two T-shaped guide grooves (12) that correspond one-to-one with the two T-shaped heads (21) and slide in cooperation. The T-shaped guide grooves (12) extend along the horizontal straight line direction. The blade plate (2) is slidably connected to the vertical car column (1) along the horizontal straight line direction by the two T-shaped heads (21) and the two T-shaped guide grooves (12) corresponding one-to-one and sliding in cooperation.

3. A turning tool bar mounting structure for a vertical lathe machining chamber according to claim 2, characterized in that: The T-shaped head (21) and the blade (2) are separate structures, and the T-shaped head (21) is connected to the blade (2) by screws.

4. A turning tool bar mounting structure for a vertical lathe machining chamber according to claim 2, characterized in that: The locking mechanism (6) includes a first locking screw (61) disposed on the outside of one of the T-shaped guide grooves (12) and whose end abuts against the outer side of the T-shaped head (21) inside the T-shaped guide groove (12), and a second locking screw (62) disposed on the outside of the other T-shaped guide groove (12) and whose end abuts against the outer side of the T-shaped head (21) inside the T-shaped guide groove (12). The first locking screw (61) and the second locking screw (62) are respectively threaded to the upright column (1) of the car body through their threads.

5. A tool bar mounting structure for a vertical lathe machining cavity tool bar according to claim 4, characterized in that: The first locking screw (61) and the second locking screw (62) are both multiple and are arranged at intervals along the sliding direction of the blade (2).

6. A tool holder mounting structure for machining cavities on a vertical lathe as described in any one of claims 1 to 5, characterized in that: The upright column (1) includes an upright column body (11) and a lower end plate (13) detachably connected to the lower end of the upright column (1), the lower end surface of the lower end plate (13) forming the lower end surface of the upright column (1).

7. A tool bar mounting structure for a vertical lathe machining cavity tool bar according to claim 6, characterized in that: The lower end plate (13) is provided with an upwardly extending connecting part (131), and the lower end face of the upright column body (11) is provided with a slot (14). The connecting part (131) is inserted into the slot (14) and is pressed and fixed in the slot (14) by multiple tightening screws (7) provided on the side wall of the slot (14) and whose ends abut against the side of the connecting part (131). The tightening screws (7) are arranged in sequence at intervals to form an upwardly opening U-shape.

8. A turning tool bar mounting structure for a vertical lathe machining cavity according to claim 7, characterized in that: The connecting part (131) is a U-shaped structure with the opening facing upwards.

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