Adjustable knife holder

Abstract

The utility model provides an adjustable tool holder, including a bottom plate; a first column and a second column; the two ends of the first shaft are respectively installed in a pair of first columns and a pair of second columns on both sides through a limit block bearing assembly, and the ends are connected to an external drive motor; the second shaft is arranged above the first shaft in parallel, and a turning tool is connected to the end; the second tooth arranged on the first shaft and the first tooth arranged on the second shaft are meshed and transmitted when rotating; the vertical adjustment assembly adjusts the height of the horizontal adjustment assembly and the limit block spring assembly. The utility model determines the specific distance of the left and right movement of the second shaft by the rotation angle of the handle screw in the horizontal adjustment assembly, adjusts the height position of the second shaft by the screw in the vertical adjustment assembly, drives the first shaft to rotate by an external motor, and realizes the movement of the turning tool driven by the second shaft through the meshing transmission of the external teeth on the first and second shafts, thereby realizing the height and left and right adjustment of the driving wheel, and will not affect the clamping force of the turning tool.

Description

Technical Field

[0001] The utility model relates to the field of numerically controlled lathes, in particular to the technical field of tool rest installation, and specifically is an adjustable tool rest. Background Art

[0002] On CNC lathe windows, the turning tools used for processing will require different cutting depths and angles for different workpiece shapes and sizes. Adjusting the tool holder height can meet the needs of different workpiece processing, ensuring that the cutting blade can cut into the workpiece at the correct angle and depth to achieve high-quality processing.

[0003] However, in order to quickly adjust the tool holder angle on conventional CNC machine tools, manual bolt clamping is usually used to loosen the joints using tools such as screwdrivers, and the tool holder is adjusted to the required requirements. However, manual adjustment may result in insufficient tool clamping force, displacement during processing, and even affect processing accuracy, damage the tool holder, cause wear on the tool, and reduce service life. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide an adjustable tool holder to solve the difficulties of the prior art.

[0005] In order to achieve the above-mentioned object and other related objects, the utility model provides an adjustable tool holder, comprising:

[0006] Bottom plate 8;

[0007] A first column 4 and a second column 5, wherein the first column 4 and the second column 5 are arranged on the left and right, and each column is provided with a pair;

[0008] A first shaft 18, both ends of which are respectively installed in a pair of the first columns 4 and a pair of the second columns 5 on both sides through stopper bearing assemblies, and are arranged close to the bottom plate 8, and an external drive motor is connected to the end located outside the bottom plate 8;

[0009] A second shaft 22, the second shaft 22 is arranged parallel to the first shaft 18, one axial end of the second shaft 22 is installed in a pair of the second columns 5 through a horizontal adjustment assembly, and the other end is installed in a pair of the first columns 4 through a limit block spring assembly, and a turning tool is connected to the end located outside the bottom plate 8;

[0010] The second tooth 35 disposed on the first shaft 18 and the first tooth 36 disposed on the second shaft 22 are meshed and transmitted when rotating;

[0011] A vertical adjustment component is installed on the top of a pair of the No. 1 columns 4 and a pair of the No. 2 columns 5. The bottom of the vertical adjustment component passes through the upper side plate 3 to contact the horizontal adjustment component and the limit block spring component below, and adjusts the height of the horizontal adjustment component and the limit block spring component.

[0012] According to the preferred solution, the upper side plate 3 is fixedly installed and connected between a pair of the first columns 4 and a pair of the second columns 5 by bolts, and is arranged parallel to the bottom plate 8;

[0013] Bayonet holes are arranged on both sides of the upper side plate 3 at positions corresponding to the installation of the vertical adjustment components.

[0014] According to the preferred embodiment, the limit block bearing assembly arranged near the second tooth 35 includes:

[0015] A third stopper 14, wherein grooves for clamping the first column 4 are arranged on both sides of the third stopper 14 close to the first column 4, and a through hole for passing the first shaft 18 is formed in the middle;

[0016] A second retaining ring 16, the outer portion of the first shaft 18 is mounted in the third limit block 14 through the second retaining ring 16;

[0017] A No. 1 deep groove ball bearing 29, which is arranged on the No. 1 shaft 18 and located on both sides of the No. 2 retaining ring 16;

[0018] A first retaining ring 15, wherein the first retaining ring 15 is sleeved on the first shaft 18 and is located between the third limit block 14 and the second tooth 35;

[0019] A locking washer 34 for a round nut is also installed between the second tooth 35 and the first shaft 18.

[0020] According to the preferred embodiment, the bottom of the third limiting block 14 is mounted on the base plate 8 by means of hexagon socket screws.

[0021] According to the preferred embodiment, a round nut with an outer diameter larger than the through hole of the No. 3 limit block 14 is installed on one side of the No. 1 shaft 18 close to the No. 3 limit block 14, and a No. 3 retaining ring 17 and a round nut are installed in sequence on the other side to achieve fastening.

[0022] According to a preferred embodiment, the limit block bearing assembly disposed on the side away from the second tooth 35 includes:

[0023] A first stopper block 9, the bottom of which is mounted on the bottom plate 8 via a bottom plate pad 6 and a fixing screw 30, a through hole is formed in the middle of the first stopper block 9 for passing through the first shaft 18, and a deep groove ball bearing is arranged between the first stopper block 9 and the first shaft 18;

[0024] The elastic retaining ring 26 for the No. 1 hole is sleeved and installed on the No. 1 shaft 18 and is located on the side of the deep groove ball bearing close to the No. 1 shaft 18 body and is located in the through hole.

[0025] According to the preferred solution, a bottom plate pad limit block 7 is also installed on the side of the bottom plate pad 6 close to the first column 4, and the bottom plate pad limit block 7 is fixed on the bottom plate 8.

[0026] According to the preferred solution, the vertical surfaces of the No. 1 limit block 9 and the No. 3 limit block 14 are connected and fastened to the No. 1 column 4 and the No. 2 column 5 by screws.

[0027] According to a preferred embodiment, the level adjustment component comprises:

[0028] A second stopper 10, wherein grooves for clamping the second column 5 are arranged on both sides of the second stopper 10 close to the second column 5, a through hole is formed in the middle for passing the second shaft 22 and for horizontal movement of the second shaft 22, and a second deep groove ball bearing 28 is arranged between the second stopper 10 and the second shaft 22;

[0029] A handle screw 13, wherein the screw end of the handle screw 13 horizontally passes through the second limit block 10 and extends into the arrangement, and is located on the same axis as the second limit block 10;

[0030] The cushion block 12 is arranged between the screw end of the handle screw 13 and the end of the second shaft 22 and the second limit block 10 .

[0031] According to a preferred embodiment, the limit block spring assembly includes:

[0032] A fourth stopper 19, wherein grooves for clamping the first column 4 are arranged on both sides of the fourth stopper 19 close to the first column 4, a through hole is formed in the middle for passing the second shaft 22 and for horizontal movement of the second shaft 22, and a deep groove ball bearing is arranged between the fourth stopper 19 and the second shaft 22;

[0033] The fourth retaining ring 21 is installed in the through hole of the fourth limiting block 19 and is arranged close to the first tooth 36;

[0034] The steel wave spring 27 and the elastic retaining ring 25 for the No. 2 hole are respectively sleeved and installed on the No. 2 shaft 22 and are arranged on both sides of the deep groove ball bearing.

[0035] According to a preferred embodiment, the vertical adjustment assembly includes:

[0036] A No. 1 screw 11, which is vertically arranged and arranged on the upper side plate 3 through No. 2 fixing threads 2 arranged on the upper and lower surfaces, and the bottom is connected to the No. 2 limit block 10;

[0037] The second screw rod 20 is vertically arranged and is arranged on the upper side plate 3 through the first fixing threads 1 arranged on the upper and lower surfaces, and the bottom is connected to the fourth limiting block 19.

[0038] According to the preferred solution, threaded adjustment holes are provided at the tops of the No. 2 limit block 10 and the No. 4 limit block 19 corresponding to the No. 1 screw rod 11 and the No. 2 screw rod 20 respectively.

[0039] The utility model determines the specific distance of left and right movement of the second shaft by rotating the angle of the handle screw in the horizontal adjustment component, and adjusts the height position of the second shaft by the screw in the vertical adjustment component. When in use, the external motor is used to drive the first shaft to rotate, and the meshing transmission of the external teeth on the first shaft and the second shaft is realized, so that the second shaft drives the movement of the turning tool, and the height and left and right adjustment of the driven wheel is realized. It is suitable for adjustment with not too high precision, is fast and convenient, and will not affect the clamping force of the turning tool.

[0040] The best embodiment of the present invention will be described in more detail below in conjunction with the accompanying drawings so that the features and advantages of the present invention can be easily understood. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 The display is a three-dimensional structural schematic diagram of the utility model;

[0042] Figure 2 Shown is a partial three-dimensional structural schematic diagram of the utility model;

[0043] Figure 3 The display is a front view of the utility model;

[0044] Figure 4 Shown is a cross-sectional view of the present utility model;

[0045] Figure 5 It is an enlarged schematic diagram of the partial structure of the second shaft and the horizontal adjustment components and the limit block spring components at the left and right ends of the utility model;

[0046] Figure 6 It is an enlarged schematic diagram of the partial structure of the first shaft and the limit block bearing assemblies at the left and right ends of the utility model;

[0047] Description of symbols

[0048] 1. No. 1 fixing thread; 2. No. 2 fixing thread; 3. Upper side plate; 4. No. 1 column; 5. No. 2 column; 6. Bottom plate pad; 7. Bottom plate pad limit block; 8. Bottom plate; 9. No. 1 limit block; 10. No. 2 limit block; 11. No. 1 screw; 12. Pad; 13. Handle screw; 14. No. 3 limit block; 15. No. 1 retaining ring; 16. No. 2 retaining ring; 17. No. 3 retaining ring 1. Circlip; 18. No. 1 shaft; 19. No. 4 limit block; 20. No. 2 screw; 21. No. 4 retaining ring; 22. No. 2 shaft; 25. Elastic retaining ring for No. 2 hole; 26. Elastic retaining ring for No. 1 hole; 27. Steel wave spring; 28. No. 2 deep groove ball bearing; 29. ​​No. 1 deep groove ball bearing; 30. Fixing screw; 34. Lock washer for round nut; 35. No. 2 tooth; 36. No. 1 tooth. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solution and advantages of the technical solution of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described in conjunction with the drawings of the specific embodiments of the utility model. The same figure marks in the drawings represent the same parts. It should be noted that the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the described embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0050] Compared with the embodiments shown in the drawings, feasible implementations within the scope of protection of the present invention may have fewer components, other components not shown in the drawings, different components, differently arranged components, or differently connected components, etc. In addition, two or more components in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.

[0051] Unless otherwise defined, the technical terms or scientific terms used herein shall have the usual meanings understood by persons with ordinary skills in the field to which the utility model belongs. The words "first", "second" and similar words used in the specification and claims of the utility model patent application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not necessarily indicate quantity restrictions. Words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0052] The utility model provides an adjustable tool holder for use in a vehicle frame installation process. The utility model does not limit the type of turning tools, but the adjustable tool holder structure is particularly suitable for working conditions where high precision is not required.

[0053] In general, the adjustable tool rest proposed in the utility model mainly includes a base plate 8, a first column 4 and a second column 5, a first shaft 18, a second shaft 22, a limit block bearing assembly, a horizontal adjustment assembly, a limit block spring assembly and a vertical adjustment assembly. Figure 1 , which shows the arrangement relationship of the base plate 8, the first column 4 and the second column 5, the first shaft 18, the second shaft 22, the limit block bearing assembly, the horizontal adjustment assembly, the limit block spring assembly and the vertical adjustment assembly.

[0054] In order to achieve the purpose of quickly adjusting the installation position of the turning tool in a CNC machine tool, and to solve the problem in the background technology that in order to quickly adjust the tool holder angle on a conventional CNC machine tool, manual bolt clamping adjustment is usually used, and the joint is loosened using a screwdriver or other tools to adjust the tool holder to the required requirements. However, manual adjustment may result in insufficient tool clamping force, and displacement may occur during the machining process, and even affect the machining accuracy, damage the tool holder, cause wear on the tool, and reduce the service life. For this reason, in the technical solution provided in this embodiment, the specific distance that the second shaft 22 moves left and right is determined by the rotation angle of the handle screw 13 in the horizontal adjustment component, and the height position of the second shaft 22 is adjusted by the screw in the vertical adjustment component. When in use, the first shaft 18 is driven to rotate by an external motor, and the movement of the turning tool driven by the second shaft 22 is achieved through the meshing transmission of the external teeth on the first shaft 18 and the second shaft 22.

[0055] like Figure 1As shown, a bottom plate 8 and an upper side plate 3 are provided which are parallel to each other, and a pair of No. 1 columns 4 and a pair of No. 2 columns 5 are respectively installed on the left and right sides between the bottom plate 8 and the upper side plate 3 to form a support, and the pair of No. 1 columns 4 and the pair of No. 2 columns 5 are respectively symmetrically arranged, and a gap is formed in the middle to accommodate the installation of the No. 1 shaft 18 and the No. 2 shaft 22; wherein the No. 1 shaft 18 is fixedly installed at the bottom of the pair of No. 1 columns 4 and the pair of No. 2 columns 5, and an external driving motor is connected to the end portion located on the outer side of the bottom plate 8, and the No. 2 shaft 22 is arranged parallel to the top of the No. 1 shaft 18, and a turning tool is connected to the end portion located on the outer side of the bottom plate 8; due to the two The No. 1 shaft 22 can adjust the height and horizontal position of the tool holder installed, so the tool holder installed on the No. 2 shaft 22 also adjusts the installation position accordingly. The above adjustment method is driven by an external motor, and the No. 2 tooth 35 set on the No. 1 shaft 18 and the No. 1 tooth 36 set on the No. 2 shaft 22 are engaged and transmitted during rotation. The accuracy is greatly improved compared to manual operation, and it saves time and effort. In addition, it does not affect the connection strength between the turning tool and the tool holder, effectively ensuring that the installation strength of the turning tool is not affected by the adjustment, and is also conducive to long-term use. At the same time, it also facilitates the installation and debugging of various types of turning tools, effectively improving production and installation efficiency.

[0056] As mentioned above, both ends of the No. 1 shaft 18 are respectively installed in a pair of No. 1 columns 4 and a pair of No. 2 columns 5 on both sides through limit block bearing assemblies, and are arranged close to the bottom plate 8; specifically, Figure 2 , 4 As shown in FIG. 6 , the limit block bearing assembly arranged near the side of the second tooth 35 includes a third limit block 14, and grooves for clamping the first column 4 are arranged on both sides of the third limit block 14 near the first column 4, and a through hole for passing the first shaft 18 is formed in the middle, and the outer part of the first shaft 18 is installed in the third limit block 14 through the sleeved second retaining ring 16, and the two ends of the second retaining ring 16 are respectively installed with a first deep groove ball bearing 29, and the above structure can achieve the effect of the first shaft 18 end structure flexibly rotating in the third limit block 14;

[0057] Since the position of the No. 1 shaft 18 does not need to be adjusted except for rotation after installation, in order to prevent the No. 1 shaft 18 from moving and contacting adjacent structures, a No. 1 retaining ring 15 is sleeved on the No. 1 shaft 18 and located between the No. 3 limit block 14 and the No. 2 tooth 35. The other side of the No. 1 shaft 18 located within the bottom plate 8 and the upper side plate 3, that is, the side of the No. 1 shaft 18 close to the No. 3 limit block 14 is also installed with a round nut with an outer diameter larger than the through hole of the No. 3 limit block 14, and the No. 3 retaining ring 17 and the round nut are installed in sequence on the other side for fastening; similarly, in order to prevent the No. 2 tooth 35 of the No. 1 shaft 8 connected to the external motor from rotating relative to the No. 1 shaft 8, a locking washer 34 for the round nut is also installed between the No. 2 tooth 35 and the No. 1 shaft 18.

[0058] like Figure 2 ,4 As shown in 6, the limit block bearing assembly for receiving the other end of the No. 1 shaft 18 adopts the structure of the No. 1 limit block 9, wherein the bottom of the No. 1 limit block 9 is installed on the bottom plate 8 through the bottom plate pad 6 and the fixing screw 30, and a through hole passing through the No. 1 shaft 18 is formed in the middle of the No. 1 limit block 9, and a deep groove ball bearing is arranged between the No. 1 limit block 9 and the No. 1 shaft 18 to realize effective rotation. In addition, an elastic retaining ring 26 for the No. 1 hole is sleeved and installed on the side of the No. 1 shaft 18 and the deep groove ball bearing close to the No. 1 shaft 18 body, which can effectively prevent the No. 1 shaft 18 from loosening or vibrating during rotation, ensure normal operation, and extend the service life.

[0059] Since the position of shaft No. 18 does not need to be adjusted after installation, on the side, the vertical surfaces of limit block No. 1 9 and limit block No. 3 14 are connected and fastened with column No. 1 4 and column No. 2 5 by screws, and at the bottom, limit block No. 3 14 is installed on the base plate 8 by hexagon socket screws. Correspondingly, since there is a height difference between column No. 1 4 and column No. 2 5, and at the same time, it is convenient to adjust the position of column No. 2 5, the bottom of column No. 2 5 is installed on the base plate pad 6. In order to ensure the position of the base plate pad 6 and avoid excessive movement, a base plate pad limit block 7 is also installed on the side of the base plate pad 6 close to column No. 1 4, and the base plate pad limit block 7 is fixed on the base plate 8.

[0060] What needs to be specifically explained is the structure of the horizontal adjustment component and the limit block spring component for adjusting the second shaft 22 in the horizontal direction, such as Figure 4 and 5 As shown, the left side is a horizontal adjustment component, and the right side is a limit block spring component, wherein the horizontal adjustment component is installed between a pair of No. 2 columns 5 through a No. 2 limit block 10, and grooves for clamping the No. 2 columns 5 are provided on both sides of the No. 2 columns 5, and a through hole is formed in the middle for passing through the No. 2 shaft 22 and for horizontal movement of the No. 2 shaft 22, and a No. 2 deep groove ball bearing 28 is provided between the No. 2 limit block 10 and the No. 2 shaft 22, and the screw end of the handle screw 13 for adjusting the horizontal position of the No. 2 shaft 22 horizontally passes through the No. 2 limit block 10 and extends into the setting, and is connected to the No. 2 limit block 1 0 are located on the same axis. Since a scale is provided on the No. 2 limit block 10, the specific distance of left and right movement can be determined by the rotation angle of the handle screw 13; further, the cushion block 12 is arranged between the screw end of the handle screw 13 and the end of the No. 2 shaft 22 and the No. 2 limit block 10. The cushion block can be used to adjust the gap between the handle screw 13 and the No. 2 shaft 22 to ensure that they fit tightly but not too tight to reduce wear, and ensure that the handle screw 13 rotates smoothly on the No. 2 shaft 22, while preventing damage caused by overtightening.

[0061] On this basis, the limit block spring assembly on the other side adopts the No. 4 limit block 19. The No. 4 limit block 19 is provided with grooves for clamping the No. 1 column 4 on both sides close to the No. 1 column 4, and a through hole is formed in the middle for passing the No. 2 shaft 22 and for horizontal movement of the No. 2 shaft 22. A deep groove ball bearing is arranged between the No. 4 limit block 19 and the No. 2 shaft 22. A steel wave spring 27 and an elastic retaining ring 25 for the No. 2 hole are respectively mounted on the No. 2 shaft 22 and are arranged on both sides of the deep groove ball bearing. While playing a buffering and shock absorbing role, it controls the axial displacement. On the basis of adjusting the horizontal position of the No. 2 shaft 22, the stable position of the bearing is maintained to prevent it from moving due to vibration or impact.

[0062] Preferably, the fourth retaining ring 21 is installed in the through hole of the fourth limit block 19 and is arranged close to the first tooth 36, which effectively plays a role in limiting the position between the limit block spring assembly and the first tooth 36, avoiding the influence of the first tooth 36 on the second shaft 22 during the rotation of the first tooth 36.

[0063] like Figure 1 , 2 As shown in 4, the vertical adjustment assembly realizes the adjustment of the vertical direction of the second axis 22. The vertical adjustment assembly is installed on the top of a pair of the first columns 4 and a pair of the second columns 5. The upper side plate 3 is provided with bayonet holes at the positions corresponding to the installation of the vertical adjustment assembly on both sides. The bottom of the vertical adjustment assembly passes through the upper side plate 3 and contacts with the horizontal adjustment assembly and the limit block spring assembly below, and adjusts the height of the horizontal adjustment assembly and the limit block spring assembly.

[0064] like Figure 4 As shown, the left and right sides of the vertical adjustment assembly are respectively provided with a No. 1 screw 11 and a No. 2 screw 20 inserted in the bayonet of the upper side plate 3. The No. 1 screw 11 is vertically arranged and is arranged on the upper side plate 3 through the No. 2 fixing thread 2 arranged on the upper and lower surfaces, and the bottom is connected to the No. 2 limit block 10. The No. 2 screw 20 is vertically arranged and is arranged on the upper side plate 3 through the No. 1 fixing thread 1 arranged on the upper and lower surfaces, and the bottom is connected to the No. 4 limit block 19. Since the tops of the No. 2 limit block 10 and the No. 4 limit block 19 are respectively provided with threaded adjustment holes corresponding to the No. 1 screw 11 and the No. 2 screw 20, when adjusting, the height of the No. 2 limit block 10 and the No. 4 limit block 19 can be adjusted by rotating the No. 1 screw 11 and the No. 2 screw 20, so as to achieve the purpose of adjusting the height of the No. 2 axis 22.

[0065] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. An adjustable tool holder, characterized in that: include: Bottom plate (8); A first column (4) and a second column (5), wherein the first column (4) and the second column (5) are arranged on the left and right, and a pair of the first column (4) and the second column (5) are arranged respectively; A first shaft (18), both ends of which are respectively installed in a pair of the first columns (4) and a pair of the second columns (5) on both sides through stopper bearing assemblies, and are arranged close to the bottom plate (8), and an external drive motor is connected to the end portion located outside the bottom plate (8); A second shaft (22), the second shaft (22) being arranged parallel to the first shaft (18), one axial end of the second shaft (22) being installed in a pair of the second columns (5) through a horizontal adjustment assembly, and the other end being installed in a pair of the first columns (4) through a limit block spring assembly, and a turning tool being connected to the end portion located outside the bottom plate (8); The second tooth (35) arranged on the first shaft (18) meshes with the first tooth (36) arranged on the second shaft (22) for transmission when rotating; A vertical adjustment component is installed on the top of a pair of the first columns (4) and a pair of the second columns (5), and the bottom of the vertical adjustment component passes through the upper side plate (3) to contact the horizontal adjustment component and the limit block spring component below, and adjusts the height of the horizontal adjustment component and the limit block spring component.

2. The adjustable tool holder according to claim 1, characterized in that: The limit block bearing assembly arranged near the second tooth (35) comprises: A third limiting block (14), wherein grooves for clamping the first column (4) are arranged on both sides of the third limiting block (14) close to the first column (4), and a through hole for passing the first shaft (18) is formed in the middle; A second retaining ring (16), the outer portion of the first shaft (18) is mounted in the third limiting block (14) through the sleeve of the second retaining ring (16); A No. 1 deep groove ball bearing (29), the No. 1 deep groove ball bearing (29) being arranged on the No. 1 shaft (18) and being located on both sides of the No. 2 retaining ring (16); A No. 1 retaining ring (15), wherein the No. 1 retaining ring (15) is sleeved on the No. 1 shaft (18) and is located between the No. 3 limiting block (14) and the No. 2 tooth (35); A locking washer (34) for a round nut is also installed between the second tooth (35) and the first shaft (18).

3. The adjustable tool holder according to claim 2, characterized in that: The limit block bearing assembly arranged on a side away from the second tooth (35) comprises: A first limit block (9), the bottom of which is mounted on the bottom plate (8) via a bottom plate pad (6) and a fixing screw (30), a through hole for passing the first shaft (18) is formed in the middle of the first limit block (9), and a deep groove ball bearing is arranged between the first limit block (9) and the first shaft (18); The elastic retaining ring (26) for the No. 1 hole is sleeved and installed on the No. 1 shaft (18) and is located on the side of the deep groove ball bearing close to the No. 1 shaft (18) body and in the through hole.

4. The adjustable tool holder according to claim 3, characterized in that: The level adjustment component comprises: A second limit block (10), wherein grooves for clamping the second column (5) are arranged on both sides of the second limit block (10) close to the second column (5), a through hole is formed in the middle for passing the second shaft (22) and for the second shaft (22) to move horizontally, and a second deep groove ball bearing (28) is arranged between the second limit block (10) and the second shaft (22); A handle screw rod (13), wherein the screw rod end of the handle screw rod (13) horizontally passes through the second limit block (10) and extends into the arrangement, and is located on the same axis as the second limit block (10); A cushion block (12) is arranged between the screw end of the handle screw (13) and the end of the second shaft (22) and the second limit block (10).

5. The adjustable tool holder according to claim 4, characterized in that: The limit block spring assembly comprises: A fourth limit block (19), wherein grooves for clamping the first column (4) are arranged on both sides of the fourth limit block (19) close to the first column (4), a through hole is formed in the middle for passing the second shaft (22) and for the second shaft (22) to move horizontally, and a deep groove ball bearing is arranged between the fourth limit block (19) and the second shaft (22); A fourth retaining ring (21), the fourth retaining ring (21) is installed in the through hole of the fourth limiting block (19) and is arranged close to the first tooth (36); A steel wave spring (27) and an elastic retaining ring (25) for the second hole are respectively sleeved and installed on the second shaft (22) and are arranged on both sides of the deep groove ball bearing.

6. The adjustable tool holder according to claim 5, characterized in that: The vertical adjustment assembly comprises: A first screw rod (11), the first screw rod (11) is vertically arranged and is arranged on the upper side plate (3) through second fixing threads (2) arranged on the upper and lower surfaces, and the bottom is connected to the second limit block (10); The second screw rod (20) is vertically arranged and is arranged on the upper side plate (3) through the first fixing threads (1) arranged on the upper and lower surfaces, and the bottom is connected to the fourth limiting block (19).

7. The adjustable tool holder according to claim 6, characterized in that: The tops of the No. 2 limiting block (10) and the No. 4 limiting block (19) are provided with threaded adjustment holes corresponding to the No. 1 screw rod (11) and the No. 2 screw rod (20) respectively.

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