Double-spindle butt joint row tool structure of numerical control lathe

Abstract

The invention relates to the technical field of double-spindle numerical control lathes, in particular to a numerical control lathe double-spindle butt joint tool arranging structure which comprises a mounting base and a tool arranging part arranged on the mounting base, a tool rest is detachably connected to the tool arranging part, an adjusting assembly is arranged in the tool rest, and a fastener is sleeved with an elastic gasket. The bottom protrusion of the fastener connected to the tool rest is slidably mounted in the groove formed in the tool arranging part, after the tool arranging part reaches a proper position, the fastener is pre-screwed to compress the elastic washer, the fastener is not completely screwed, the elastic washer abuts against the groove to fix the tool rest at the moment, and the tool rest is allowed to be finely adjusted on the premise that the tool rest is kept stable; then the adjusting assembly is pressed to move longitudinally, when the bottom adjusting component makes contact with the tool arranging piece, the limiting assembly limits the bottom adjusting component, then the adjusting component is rotated to be matched with the tool arranging piece, and then the tool rest is driven to be finely adjusted.

Description

Technical Field

[0001] The invention relates to the technical field of double-spindle CNC lathes, in particular to a double-spindle butt-jointed tool arrangement structure for CNC lathes. Background Art

[0002] A dual-spindle CNC lathe is a precision machining device equipped with two independent spindles, controlled by CNC system programming. It can simultaneously or collaboratively complete multiple machining steps on a workpiece. Its core design lies in the collaborative operation of the two spindles, significantly improving production efficiency and machining accuracy. The tool arrangement structure of the dual-spindle CNC lathe is the core design for achieving efficient machining. Through the arrangement and coordinated movement of multiple tools, it can complete continuous machining of complex processes.

[0003] The main components of the existing dual-spindle CNC lathe are as follows: Figure 2 and Figure 14 As shown, it mainly includes a mounting base and a shell installed on the outside of the mounting base, the shell is provided with a cabinet door for opening and closing, the mounting base is provided with a transmission assembly and a spindle assembly driven by the transmission assembly, the mounting base is also provided with a tool arrangement part for installing a tool holder, a tool holder for installing a tool, and fasteners for fixing the tool holder.

[0004] The Chinese patent with announcement number CN119282154A provides a dual-spindle butt-jointed tool arrangement CNC lathe. The flushing mechanism also includes a boosting chamber opened on some bolts. Each boosting chamber is connected to a first flushing pipe connected to the water outlet pipe. The bottom end of the bolt with the boosting chamber is also provided with a water spray hole connected to the first flushing pipe. The water is collected in the boosting chamber and then sprayed outward from the water spray hole and sprayed onto the tool, flushing down the iron chips and impurities remaining on the tool or tool slot during machining.

[0005] The Chinese patent announcement number is CN111604506A. This invention discloses a dual-spindle CNC lathe. The fine-tuning tool holder can achieve fine-tuning of the machine tool's tool in the XY direction to ensure the relative position of the tool and the spindle. The innovation of this machine tool structure lies in the fact that the machine tool has two spindles. While one is processing, the other can also be processed at the same time, which doubles the processing efficiency. The two tool holders of the lathe can be fine-tuned in two directions to ensure the position of the tool and spindle when processing the workpiece. The operation is convenient, sensitive and accurate.

[0006] The tool holder of the existing dual-spindle CNC lathe is pre-fixed on the tool arrangement by fasteners. Since the tool end of the tool holder is installed with a large weight, a cantilever torque is generated, which causes the tool holder to be in a tilted state after the initial installation. In order to achieve the required parallelism requirements, the operator currently relies mainly on manually knocking the tool holder with tools such as plastic sticks, and observing and adjusting in real time. Manual knocking is difficult to achieve precise micron-level parallelism adjustment, and the process is time-consuming and lengthy. When installing multiple tools, the problem is magnified exponentially, seriously slowing down the tool arrangement efficiency. After completing the parallelism adjustment, the spacing between each tool holder needs to be manually adjusted according to the workpiece size and the number of tools. Manually performing this operation is not only inconvenient, but also more likely to destroy the calibrated tool holder parallelism during the adjustment process, causing secondary deviations and further extending the overall tool arrangement time.

[0007] Therefore, the present invention provides a tool arrangement structure for a dual-spindle CNC lathe that can increase the tool arrangement rate and facilitate adjustment of the spacing between multiple tool holders. Summary of the Invention

[0008] Aiming at the problems in the prior art of low tool arrangement rate and difficulty in accurately controlling the tool arrangement accuracy of dual-spindle CNC lathes, a dual-spindle docking tool arrangement structure for CNC lathes is designed.

[0009] The technical solution adopted by the present invention to solve the technical problem is: a dual-spindle docking tool arrangement structure for a CNC lathe, comprising a mounting base and a tool arrangement member arranged on the mounting base, the tool arrangement member being detachably connected to a tool holder, an adjustment component being provided inside the tool holder, and an elastic washer being sleeved on the fastener;

[0010] When the tool holder is fixedly connected to the tool arrangement member by a fastener, the elastic washer is compressed by the fastener to be in a semi-compressed state, thereby preliminarily fixing the tool holder and allowing it to be adjusted. By rotating the adjustment component, the tool holder is gradually fine-tuned to the required parallelism, and then the adjustment component is further rotated to adjust the distance between the tool holders according to the size of the workpiece and the number of installed tool holders;

[0011] The adjusting component transmits the rotational power to the adjusting member contacting the upper end of the tool arrangement member, so that the adjusting member drives the tool holder to move and complete the adjustment.

[0012] Furthermore, the adjustment assembly is located at the center of the tool holder, and includes a rotating part that is rotatably installed in the tool holder and passes through the upper end of the tool holder. One end of the rotating part located inside the tool holder is rotatably connected to a deceleration assembly, and the end of the deceleration assembly away from the rotating part is fixedly connected to a spring, and the end of the deceleration assembly close to the spring is fixedly connected to an adjustment part.

[0013] Furthermore, the adjustment component includes a worm gear structure rotatably installed inside the tool holder, and adjustment parts are rotatably connected on both sides of the worm gear, and the bottom of the adjustment part is in contact with the upper end of the tool arrangement part, wherein the adjustment part is configured as a roller, and the outer side of the roller is provided with a printing for increasing friction, and a rotating wheel is provided at one end of the worm gear that passes through the upper end of the tool holder.

[0014] Furthermore, an installation cavity is opened inside the tool holder, and the upper and lower ends of the installation cavity pass through the tool holder respectively. The adjustment component is arranged inside the installation cavity, the outer wall of the deceleration component is slidably connected to the inner wall of the adjustment cavity, and the end of the spring away from the deceleration component is fixedly connected to the installation cavity.

[0015] Furthermore, an adjusting block is fixedly connected to the outer side of the rotating member, a limiting groove is provided on the outer side of the adjusting block, and the bottom end of the adjusting block is rotatably connected to the upper end of the deceleration assembly.

[0016] Furthermore, a limiting assembly is provided inside the tool holder, and the limiting assembly includes elastic limiting members symmetrically arranged on the outside of the rotating member, and adjustment rods are symmetrically provided on one side of the two groups of elastic limiting members. An elastic resistance member is also provided on the outside of the rotating member, which is located between the two groups of elastic limiting members.

[0017] Furthermore, an adjustment groove is provided at the upper end of the tool arrangement member, and a friction portion is provided on the inner wall of the adjustment groove. When the tool holder is adjusted, the adjustment member contacts the friction portion and rolls on the friction portion as the adjustment component rotates, thereby fine-tuning the tool holder.

[0018] Furthermore, the fastener is installed inside the dovetail groove opened by the cutter element, and the elastic washer is located between the bottom end of the fastener and the dovetail groove.

[0019] Furthermore, a shell is fixedly connected to the outside of the mounting base, and cabinet doors are symmetrically arranged on the shell. A transmission assembly and a spindle assembly connected through the transmission assembly are provided on one side of the mounting base, and the tool holder is detachably connected to the fastener.

[0020] Beneficial effects of the present invention:

[0021] The dual-spindle docking tool arrangement structure of a CNC lathe described in the present invention is achieved by sliding the bottom protrusion of the fastener connected to the tool holder into the groove opened by the tool arrangement part. After reaching the appropriate position, the fastener is pre-tightened to compress the elastic gasket. The fastener is not completely tightened. At this time, the elastic gasket contacts the groove to fix the tool holder, allowing it to be fine-tuned under the premise of keeping the tool holder stable. The adjustment component is then pressed to make it move longitudinally. When the bottom adjustment component contacts the tool arrangement part, the limit component limits it. The adjustment component is then rotated to cooperate with the tool arrangement part to drive the tool holder to be fine-tuned. When the tool holder is adjusted to the required parallelism, the distance between each tool holder can be adjusted according to the size of the workpiece to be processed and the number of tool arrangements so that they will not interfere with each other. The tool arrangement rate can be improved and the distance between multiple tool holders can be adjusted easily, thereby further improving the installation rate of multiple tools. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below with reference to the accompanying drawings and examples.

[0023] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the internal structure of the main body of the present invention;

[0025] Figure 3 It is a schematic diagram of the structure of the cutter arrangement of the present invention;

[0026] Figure 4 It is a schematic diagram of the tool holder structure of the present invention;

[0027] Figure 5 For the present invention Figure 4 A partial enlarged view;

[0028] Figure 6 A cross-sectional view of the tool holder structure of the present invention;

[0029] Figure 7 This is a schematic diagram of the structure of the regulating component of the present invention;

[0030] Figure 8 A partial cross-sectional view of the adjustment assembly of the present invention;

[0031] Figure 9 A schematic diagram of the structure of a cutter arrangement according to an embodiment of the present invention;

[0032] Figure 10 For the present invention Figure 9 A partial enlarged view;

[0033] Figure 11 A cross-sectional view of a tool holder structure according to an embodiment of the present invention;

[0034] Figure 12 This is a schematic structural diagram of an adjustment component according to an embodiment of the present invention;

[0035] Figure 13 It is a schematic structural diagram of the elastic washer of the present invention;

[0036] Figure 14 This is a schematic diagram of the existing tool holder structure cited in the present invention.

[0037] In the figure: 1. Housing; 2. Cabinet door; 3. Mounting base; 4. Transmission assembly; 5. Spindle assembly; 6. Tool arrangement; 61. Adjustment slot; 62. Friction portion; 7. Tool holder; 71. Mounting cavity; 8. Adjustment assembly; 81. Rotating member; 811. Adjustment block; 82. Speed ​​reduction assembly; 83. Spring; 84. Adjustment member; 9. Limit assembly; 91. Elastic limit member; 92. Elastic resistance member; 10. Fastener; 11. Elastic washer. DETAILED DESCRIPTION

[0038] In order to make the technical means, technical features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0039] Example 1: Figure 1 - Figure 8 As shown, the dual-spindle docking tool arrangement structure of a CNC lathe according to the present invention comprises a mounting base 3 and a tool arrangement member 6 provided on the mounting base 3, a tool holder 7 is detachably connected to the tool arrangement member 6, an adjustment assembly 8 is provided inside the tool holder 7, and an elastic washer 11 is sleeved on the fastener 10;

[0040] The tool holder 7 is fixedly connected to the tool arrangement 6 by the fastener 10. The elastic washer 11 is compressed by the fastener 10 to be in a semi-compressed state, which preliminarily fixes the tool holder 7 and allows it to be adjusted. Then, the tool holder 7 is gradually fine-tuned to the required parallelism by rotating the adjustment component 8. Then, the adjustment component 8 is continued to be rotated to adjust the distance between each tool holder 7 according to the size of the workpiece and the number of tool holders 7 installed.

[0041] The adjusting assembly 8 transmits the rotational power to the adjusting member 84 provided at the upper end of the cutter arrangement member 6, so that the adjusting member 84 drives the tool holder 7 to move and complete the adjustment.

[0042] The tool holder 7 is fixed to the position where the bottom protrusion of the fastener 10 connected to the tool holder 7 is slid into the groove formed by the tool row 6. After reaching the appropriate position, the fastener 10 is pre-tightened to compress the elastic gasket 11. The fastener 10 is not completely tightened. At this time, the elastic gasket 11 contacts the groove to fix the tool holder 7, allowing it to be fine-tuned under the premise of maintaining stability. The adjustment component 8 is pressed to make it move longitudinally. When the bottom adjustment component 84 contacts the friction part 62 provided on the tool row 6, the limit component 9 limits it. Then the adjustment component 8 is rotated to make it cooperate with the tool row 6 to drive the tool holder 7 to be fine-tuned, and the parallelism of the tool holder 7 is observed in real time through the external calibration tool. The calibration tool can be a micrometer. This device is a commonly used tool for technicians in this field and will not be described in detail here. When the tool holder 7 is adjusted to the required parallelism, the distance between each tool holder 7 can be adjusted according to the size of the workpiece to be processed and the number of tool rows so that they will not interfere with each other.

[0043] In this embodiment, the adjusting assembly 8 is located at the center of the tool holder 7, which includes a rotating member 81 rotatably installed in the tool holder 7 and passing through the upper end of the tool holder 7. One end of the rotating member 81 located inside the tool holder 7 is rotatably connected to the reduction assembly 82, and the end of the reduction assembly 82 away from the rotating member 81 is fixedly connected to a spring 83, and the end of the reduction assembly 82 close to the spring 83 is fixedly connected to the adjusting member 84. The outer side of the rotating member 81 is fixedly connected to an adjusting block 811, and a limiting groove is provided on the outer side of the adjusting block 811. The bottom end of the adjusting block 811 is rotatably connected to the upper end of the reduction assembly 82, and an installation cavity 71 is provided inside the tool holder 7. The upper and lower ends of the installation cavity 71 respectively pass through the tool holder 7, and the adjusting assembly 8 is arranged inside the installation cavity 71. The outer wall of the reduction assembly 82 is slidably connected to the inner wall of the adjusting cavity, and the end of the spring 83 away from the reduction assembly 82 is fixedly connected to the installation cavity 71.

[0044] Specifically, such as Figure 6 - Figure 8As shown, a rotating member 81 is provided with a rotating wheel at one end outside the tool holder 7, which can drive the rotating member 81 to rotate. The adjusting block 811 is provided on the outside of the rotating member 81 and a limiting groove matching the limiting component 9 is provided inside. When adjusting the tool holder 7, the rotating member 81 is pressed and the reduction component 82 is driven to slide inside the mounting cavity 71 through the adjusting block 811. At the same time, the spring 83 is compressed to make the adjusting member 84 move and contact the tool arrangement member 6, wherein the reduction component 82 is a planetary gear set, which converts the input rotation of the sun gear into the orbital motion of the planetary gear by constraining the ring gear. The planetary carrier outputs power at a reduced angular velocity and realizes torque amplification based on the principle of conservation of energy. Its purpose is to reduce the speed transmitted by the rotating member 81, thereby increasing the adjustment accuracy of the tool holder 7, and can reasonably set the transmission ratio of the internal gear of the planetary gear set according to the required accuracy. At the same time, the adjustment component 8 can also be set to any other structure that can achieve the same effect.

[0045] In this embodiment, a limiting component 9 is further provided inside the tool holder 7. The limiting component 9 includes elastic limiting members 91 symmetrically arranged on the outside of the rotating member 81. Adjustment rods are symmetrically provided on one side of the two groups of elastic limiting members 91. An elastic resistance member 92 is also provided on the outside of the rotating member 81, which is located between the two groups of elastic limiting members 91.

[0046] Specifically, such as Figure 8 As shown, the limiting component 9 limits the adjusting component 8 when adjusting the tool holder 7 through the elastic limiting member 91, so that the adjusting member 84 set at the bottom end thereof keeps in contact with the friction portion 62 in the adjusting groove 61, and after the adjustment is completed, the elastic contact member 92 is pressed to contact the elastic limiting member 91 to limit the adjusting component 8, wherein the elastic limiting member 91 includes a spring telescopic rod and a limiting block set at one end of the spring telescopic rod close to the rotating member 81, and at the same time, the outer sides of the two groups of spring telescopic rods are symmetrically provided with adjusting rods, wherein the ends of the two adjusting rods away from the spring telescopic rods are set as inclined surfaces, When limiting, the two groups of adjusting rods move relative to each other. The elastic resistance member 92 includes a pressing rod and an elastic member for resetting the pressing rod. A resistance block is provided at one end of the pressing rod. When the elastic resistance member 92 is pressed, the resistance member at one end of the pressing rod will conflict with the inclined surface of the adjusting rod, and the two groups of elastic limiting members 91 will be gradually separated as the pressure is pressed, and then the adjusting assembly 8 will be reset under the reset of the spring 83, so that the adjusting member 84 is disengaged from the friction portion 62 and is received into the mounting cavity 71 opened by the tool holder 7 to avoid subsequent interference from debris. At the same time, the limiting assembly 9 can also be set to any other structure that can achieve the same effect.

[0047] In this embodiment, an adjustment groove 61 is provided at the upper end of the tool holder 6, and a friction portion 62 is provided on the inner wall of the adjustment groove 61. When the tool holder 7 is adjusted, the adjustment member 84 contacts the friction portion 62 and rolls on the friction portion 62 as the adjustment assembly 8 rotates, thereby fine-tuning the tool holder 7.

[0048] Specifically, as shown in Figure 4 and Figure 5 , in the embodiment, the side of the one end of the tool holder 7 installed with the tool of the adjusting groove 61 is provided with an inclined surface, and the inclined surface is provided with a pattern for improving friction, and the outer side of the adjusting part 84 in contact with the friction part 62 is also provided with a pattern for improving friction, and the other side of the adjusting groove 61 is provided with a right angle surface, when the adjusting assembly 8 adjusts the tool holder 7, the outer side of the adjusting part 84 is only in contact with the friction part 62, and the material of the adjusting part 84 is polyurethane rubber, which has the characteristics of high strength, tear resistance, good wear resistance and deformation resistance.

[0049] In the embodiment, the outer side of the mounting base 3 is fixedly connected with the shell 1, the shell 1 is symmetrically provided with the cabinet door 2, the mounting base 3 is provided with the transmission assembly 4 on one side, and the main shaft assembly 5 is drivenly connected through the transmission assembly 4, the fastener 10 is installed in the dovetail groove opened in the tool arranging part 6, the elastic washer 11 is located between the bottom end of the fastener 10 and the dovetail groove, and the tool holder 7 is detachably connected with the fastener 10.

[0050] Specifically, as shown in Figure 2 , Figure 3 , Figure 6 and Figure 13 , the mounting base 3 is used for mounting various assemblies, the shell 1 is used as a protective shell to avoid splashing of debris during machining, the cabinet door 2 can be opened to arrange tools and feed materials, the main shaft assembly 5 is a double main shaft arranged symmetrically, which is driven to rotate by a motor, the transmission assembly 4 can be provided as a motor-driven screw rod, and then two groups of motor screw rods drive two groups of main shafts to adjust the position, and the transmission assembly 4 can also be provided as other structures that can achieve the same effect, the tool arranging part 6 is driven by a motor-driven screw rod to adjust the tool changing, and other structures that can achieve the same effect can also be used, the fastener 10 can be provided as a bolt fastener, and the elastic washer 11 can be provided as a wave washer, which deforms under compression and gradually recovers when the force is lost, and the elastic washer 11 can also be provided as other structures that can achieve the same effect.

[0051] Embodiment two: as shown in Figure 1-13 , the double main shaft butt joint tool arranging structure of the numerical control lathe comprises a mounting base 3 and a tool arranging part 6 arranged on the mounting base 3, the tool holder 7 is detachably connected to the tool arranging part 6, the adjusting assembly 8 is arranged in the tool holder 7, and the elastic washer 11 is sleeved on the fastener 10.

[0052] When the tool holder is fixedly connected to the tool arrangement member by a fastener, the elastic washer is compressed by the fastener to be in a semi-compressed state, thereby preliminarily fixing the tool holder and allowing it to be adjusted. By rotating the adjustment component, the tool holder is gradually fine-tuned to the required parallelism, and then the adjustment component is further rotated to adjust the distance between the tool holders according to the size of the workpiece and the number of installed tool holders;

[0053] The adjusting component transmits the rotational power to the adjusting member contacting the upper end of the tool arrangement member, so that the adjusting member drives the tool holder to move and complete the adjustment.

[0054] Specifically, the adjustment component 8 is configured as a worm gear structure, and is connected with an adjustment member 84 by rotating on both sides of the worm gear. The bottom of the adjustment member 84 contacts the upper end of the knife member 6, wherein the adjustment member 84 can be configured as a roller, and the outer side of the roller is provided with a printing to enhance friction. The transmission ratio of the worm gear brings about a deceleration effect, and a rotating wheel is provided at one end of the worm gear that passes through the upper end of the tool holder 7. In this embodiment, the deceleration component 82 in embodiment 1 can be subtracted and the limiting component 9 is not provided. The friction portion 62 of the adjustment groove 61 opened in the knife member 6 is provided at the bottom edge, and is used in scenarios where the precision requirements are not high. By rotating the rotating wheel, the power is transmitted to the rollers provided on both sides of the worm gear through the worm gear, so that it rolls on the surface of the friction portion 62 and drives the tool holder 7 for fine-tuning.

[0055] Working principle: First, the staff opens the cabinet door 2 and assembles the tool holder 7 with the fastener 10 and the elastic washer 11. Then, the bottom protrusion of the fastener 10 connected to the tool holder 7 is slid and installed into the groove opened by the tool arrangement member 6. After reaching the appropriate position, the fastener 10 is pre-tightened to compress the elastic washer 11. The fastener 10 is not completely tightened. At this time, the elastic washer 11 contacts the groove to fix the tool holder 7, so that the tool holder 7 can be fine-tuned while remaining stable.

[0056] Then, by pressing the adjustment component 8, it is displaced longitudinally. When the bottom adjustment member 84 contacts the friction portion 62 provided on the knife row member 6, the limit component 9 limits the adjustment component 8 when adjusting the knife holder 7 through the elastic limit member 91, so that the adjustment member 84 provided at the bottom end keeps in contact with the friction portion 62 in the adjustment groove 61, and after the adjustment is completed, the elastic contact member 92 is pressed to contact the elastic limit member 91 to limit the adjustment component 8, wherein the elastic limit member 91 includes a spring telescopic rod and a limit block provided at one end of the spring telescopic rod close to the rotating member 81, and the outer sides of the two sets of spring telescopic rods are symmetrically provided with The adjusting rod, wherein one end of the two adjusting rods away from the spring telescopic rod is set to an inclined surface. When the adjusting assembly 8 is limited, the two groups of adjusting rods move relative to each other. The elastic resistance member 92 includes a pressing rod and an elastic member for resetting the pressing rod. One end of the pressing rod is provided with a resistance block. When the elastic resistance member 92 is pressed, the resistance member at one end of the pressing rod will conflict with the inclined surface of the adjusting rod, and the two groups of elastic limiting members 91 will gradually separate as the pressing is performed. Then, under the reset of the spring 83, the adjusting assembly 8 is driven to reset, so that the adjusting member 84 is separated from the friction portion 62 and retracted into the mounting cavity 71 opened by the tool holder 7 to avoid subsequent interference from debris;

[0057] Then rotate the adjustment component 8 to make it cooperate with the tool arrangement 6 to drive the tool holder 7 to perform fine adjustment, and observe the parallelism of the tool holder 7 in real time through the external calibration tool. When the tool holder 7 is adjusted to the required parallelism, the distance between each tool holder 7 can be further adjusted according to the size of the workpiece to be processed and the number of tool arrangements so that they will not interfere with each other, and then subsequent processing work can be carried out.

[0058] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above-described embodiments. The above-described embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dual-spindle tool arrangement structure for a CNC lathe, comprising a mounting base and a tool arrangement member disposed on the mounting base, characterized in that: The tool arrangement member is detachably connected to a tool holder, an adjustment component is provided inside the tool holder, and an elastic washer is sleeved on the fastener; When the tool holder is fixedly connected to the tool arrangement member by a fastener, the elastic washer is compressed by the fastener to be in a semi-compressed state, thereby preliminarily fixing the tool holder and allowing it to be adjusted. By rotating the adjustment component, the tool holder is gradually fine-tuned to the required parallelism, and then the adjustment component is further rotated to adjust the distance between the tool holders according to the size of the workpiece and the number of installed tool holders; The adjusting component transmits the rotational power to the adjusting member contacting the upper end of the tool arrangement member, so that the adjusting member drives the tool holder to move and complete the adjustment.

2. The dual-spindle tool arrangement structure for a CNC lathe according to claim 1, characterized in that: The adjusting assembly is located at the center of the tool holder, and includes a rotating part that is rotatably installed in the tool holder and passes through the upper end of the tool holder. One end of the rotating part located inside the tool holder is rotatably connected to a reduction assembly, and the end of the reduction assembly away from the rotating part is fixedly connected to a spring, and the end of the reduction assembly close to the spring is fixedly connected to an adjusting part.

3. The dual-spindle tool arrangement structure for a CNC lathe according to claim 1, characterized in that: The adjustment component includes a worm gear structure rotatably installed inside the tool holder, and adjustment parts are rotatably connected on both sides of the worm gear. The bottom of the adjustment part is in contact with the upper end of the tool arrangement part, wherein the adjustment part is configured as a roller, and the outer side of the roller is provided with a printing for increasing friction. A rotating wheel is provided at one end of the worm gear that passes through the upper end of the tool holder.

4. A dual-spindle butt-jointed tool arrangement structure for a CNC lathe according to claim 2 or 3, characterized in that: An installation cavity is provided inside the tool holder, and the upper and lower ends of the installation cavity respectively pass through the tool holder. The adjustment component is arranged inside the installation cavity, the outer wall of the deceleration component is slidably connected to the inner wall of the adjustment cavity, and the end of the spring away from the deceleration component is fixedly connected to the installation cavity.

5. The dual-spindle butt-jointed tool arrangement structure for a CNC lathe according to claim 2, characterized in that: An adjusting block is fixedly connected to the outer side of the rotating member, a limiting groove is provided on the outer side of the adjusting block, and the bottom end of the adjusting block is rotatably connected to the upper end of the speed reduction assembly.

6. The dual-spindle tool arrangement structure for a CNC lathe according to claim 4, characterized in that: A limiting component is also provided inside the tool holder, which includes elastic limiting parts symmetrically arranged on the outside of the rotating part, and adjustment rods are symmetrically provided on one side of the two groups of elastic limiting parts. An elastic resistance part is also provided on the outside of the rotating part, which is located between the two groups of elastic limiting parts.

7. The dual-spindle tool arrangement structure for a CNC lathe according to claim 1, characterized in that: An adjustment groove is provided at the upper end of the tool arrangement member, and a friction portion is provided on the inner wall of the adjustment groove. When the tool holder is adjusted, the adjustment member contacts the friction portion and rolls on the friction portion as the adjustment component rotates, thereby fine-tuning the tool holder.

8. The dual-spindle tool arrangement structure for a CNC lathe according to claim 1, characterized in that: The fastener is installed in the dovetail groove opened by the cutter arrangement member, and the elastic washer is located between the bottom end of the fastener and the dovetail groove.

9. The dual-spindle tool arrangement structure for a CNC lathe according to claim 1, characterized in that: The outer side of the mounting base is fixedly connected to a shell, and cabinet doors are symmetrically arranged on the shell. One side of the mounting base is provided with a transmission assembly and a spindle assembly connected through the transmission assembly, and the tool holder is detachably connected to the fastener.

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