A damping CNC tool handle

Abstract

The utility model discloses a damping CNC tool holder, comprising an upper tool holder and a lower tool holder arranged thereunder, a shock absorbing mechanism being connected between the upper tool holder and the lower tool holder, the upper tool holder comprising a first mounting seat, and the lower tool holder comprising a second mounting seat: the shock absorbing mechanism comprising a positioning shell, the top and bottom of the positioning shell being respectively fixedly connected with a first connecting shell and a second connecting shell, a sliding cavity being provided at the center of the interior of the positioning shell, and a sliding plate being slidably connected with the inner wall of the sliding cavity. The device has the advantage of high shock absorption, and solves the problem that the structure of some damping CNC tool holders is relatively simple and has no shock absorption effect, and the lack of shock absorption function means that in the process of high-speed cutting, the vibration to which the tool is subjected cannot be effectively suppressed, which may lead to an increase in the surface roughness of the workpiece, and the dimensional accuracy is difficult to guarantee, and at the same time, continuous vibration will aggravate the fatigue damage of the tool, accelerate the wear of the tool edge, and significantly shorten the tool life.

Description

Technical Field

[0001] The utility model relates to the technical field of CNC tool handles, in particular to a damping CNC tool handle. Background Art

[0002] Damping CNC toolholders are precision tool accessories used in CNC machine tools (CNC). Their main feature is the damping function, which can effectively reduce vibration and noise during processing, improve processing accuracy and surface quality. Damping CNC toolholders are widely used in aerospace, automobile manufacturing, precision molds and other fields, and are especially important for those occasions that require high-precision and high-stability processing.

[0003] However, some damping CNC toolholders have a relatively simple structure and do not have a shock-absorbing effect. The lack of shock-absorbing function means that during high-speed cutting, the vibration of the tool cannot be effectively suppressed, which may lead to increased surface roughness of the workpiece and difficulty in ensuring dimensional accuracy. At the same time, continuous vibration will aggravate tool fatigue damage, accelerate tool edge wear, and significantly shorten tool life. Utility Model Content

[0004] The purpose of the utility model is to provide a damping CNC tool holder, which has the advantage of high shock absorption and solves the problem that some damping CNC tool holders have a relatively simple structure and do not have a shock absorption effect. The lack of shock absorption function means that during high-speed cutting, the vibration of the tool cannot be effectively suppressed, which may lead to increased surface roughness of the workpiece and difficulty in ensuring dimensional accuracy. At the same time, continuous vibration will aggravate the fatigue damage of the tool, accelerate the wear of the tool edge, and significantly shorten the tool life.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a damping CNC tool holder, comprising an upper tool holder and a lower tool holder arranged below the upper tool holder, a shock absorbing mechanism is connected between the upper tool holder and the lower tool holder, the upper tool holder comprises a first mounting seat, and the lower tool holder comprises a second mounting seat:

[0006] The shock absorbing mechanism includes a positioning shell, the top and bottom of the positioning shell are respectively fixedly connected to the first connecting shell and the second connecting shell, a sliding cavity is opened in the center of the positioning shell, a sliding plate is slidably connected to the inner wall of the sliding cavity, sliding rods are connected to the left and right sides of the top of the sliding plate, the top of the sliding rod extends to the inside of the first mounting seat and is slidably connected thereto, and a spring is fixedly connected between the sliding plate and the sliding rod.

[0007] As a preferred damping CNC tool handle of the utility model, a fixing screw connected to the CNC machine tool spindle is fixedly connected to the inner center of the first mounting seat, a first mounting groove is opened at the bottom of the first mounting seat, and the first mounting groove is threadedly connected to the first connecting shell.

[0008] As a preferred damping CNC tool handle of the utility model, slots are correspondingly opened on the left and right sides inside the first mounting seat, a round table push block is provided inside the slot, a rotating rod is fixedly connected to the opposite side of the round table push block, and the opposite end of the rotating rod extends to the outside of the first mounting seat and is rotatably connected thereto.

[0009] As a preferred damping CNC tool handle of the utility model, guide grooves are correspondingly opened on the left and right sides of the bottom of the first mounting seat, the guide grooves and the slots are connected to each other, a sliding rod is slidably connected to the inner wall of the guide groove, and the top of the sliding rod extends to the inside of the slot and is slidably connected to the bottom of the round table push block.

[0010] As a preferred damping CNC tool handle of the utility model, a second mounting groove is opened on the top of the second mounting seat, the second mounting groove is threadedly connected to the second connecting shell, a grinding knife is provided at the inner center of the second mounting seat, the top of the grinding knife extends into the sliding cavity and is threadedly connected to the bottom of the slide plate, and the bottom of the grinding knife extends to the bottom of the second mounting seat and is fixedly connected to a grinding head.

[0011] As a preferred damping CNC tool handle of the utility model, oil storage grooves are correspondingly opened on the left and right sides of the interior of the positioning shell, and the oil storage grooves penetrate the inner wall of the positioning shell and are slidably connected to the entire body of the slide plate.

[0012] As a preferred damping CNC tool handle of the utility model, oil filling grooves are correspondingly opened on the left and right sides of the interior of the positioning shell, the bottom of the oil filling grooves is connected to the top of the oil storage tank, and oil filling pipes compatible with the oil filling grooves are provided on the left and right sides of the outer wall of the positioning shell.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. The utility model is used to connect with the machine tool spindle or other driving mechanism through the first mounting seat of the upper tool seat, and the second mounting seat of the lower tool seat is used to install and fix the tool. The shock absorbing mechanism is the core part of the tool handle, which is composed of a positioning shell, a first connecting shell, a second connecting shell, a sliding cavity, a sliding plate, a sliding rod and a spring. When the tool vibrates during high-speed cutting, the vibration will be transmitted to the sliding rod through the upper tool seat and further act on the sliding plate. The sliding plate can slide up and down in the sliding cavity. The spring is located between the sliding plate and the sliding rod to buffer and absorb vibration energy. In the process of compression and recovery, the spring converts the vibration energy into elastic potential energy and gradually dissipates it, thereby achieving a shock absorbing effect. The device can effectively reduce the vibration of the tool during the processing process, improve the processing accuracy and the service life of the tool, while also reducing the impact on other parts of the machine tool, and improving the stability and reliability of the entire processing system.

[0015] 2. The oil filling grooves of the utility model are arranged on the left and right sides of the interior of the positioning shell, and the bottom thereof is communicated with the top of the oil storage tank. The left and right sides of the outer wall of the positioning shell are provided with oil filling pipes adapted to the oil filling grooves, which provide a convenient channel for external injection of lubricating oil. Lubricating oil can be injected into the oil filling groove regularly or as needed through the oil filling pipe, ensuring that the shock absorbing mechanism is in a good lubrication state for a long time, extending the service life of the tool handle, and also helping to improve processing accuracy and tool life. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the utility model;

[0017] Figure 2 It is a side view of the utility model;

[0018] Figure 3 It is a cross-sectional view of the utility model;

[0019] Figure 4 It is a cross-sectional view of the upper knife seat of the utility model;

[0020] Figure 5 A schematic diagram of the structure of the lower knife seat of the utility model;

[0021] Figure 6 It is a cross-sectional view of the shock absorbing mechanism of the utility model.

[0022] In the figure: 1. upper tool holder; 101. first mounting seat; 102. fixing screw; 103. slotting; 104. round table push block; 105. rotating rod; 106. guide groove; 107. first mounting groove; 2. lower tool holder; 201. second mounting seat; 202. second mounting groove; 203. grinding knife; 204. grinding head; 3. shock absorbing mechanism; 301. positioning shell; 302. first connecting shell; 303. second connecting shell; 304. sliding cavity; 305. sliding plate; 306. sliding rod; 307. spring; 308. oil storage tank; 309. oil filling tank; 310. oil filling pipe. DETAILED DESCRIPTION

[0023] See also Figure 1-Figure 6 A damping CNC tool handle includes an upper tool seat 1 and a lower tool seat 2 arranged thereunder, a shock absorbing mechanism 3 is connected between the upper tool seat 1 and the lower tool seat 2, the upper tool seat 1 includes a first mounting seat 101, and the lower tool seat 2 includes a second mounting seat 201:

[0024] Furthermore, the shock absorbing mechanism 3 includes a positioning shell 301, and the top and bottom of the positioning shell 301 are respectively fixedly connected to the first connecting shell 302 and the second connecting shell 303, and a sliding cavity 304 is opened in the center of the positioning shell 301, and a slide plate 305 is slidably connected to the inner wall of the sliding cavity 304, and the left and right sides of the top of the slide plate 305 are connected to the sliding rod 306, and the top of the sliding rod 306 extends to the inside of the first mounting seat 101 and is slidably connected thereto, and a spring 307 is fixedly connected between the slide plate 305 and the sliding rod 306.

[0025] The first mounting seat 101 of the upper tool holder 1 is used to be connected to the machine tool spindle or other driving mechanism, and the second mounting seat 201 of the lower tool holder 2 is used to install and fix the tool. The shock absorbing mechanism 3 is the core part of the tool handle, which is composed of a positioning shell 301, a first connecting shell 302, a second connecting shell 303, a sliding cavity 304, a slide plate 305, a slide bar 306 and a spring 307. When the tool vibrates during high-speed cutting, the vibration will be transmitted to the slide bar 306 through the upper tool holder 1, and further act on the slide plate 305. The slide plate 305 can slide up and down in the sliding cavity 304. The spring 307 is located between the slide plate 305 and the slide bar 306, which plays a role in buffering and absorbing vibration energy. In the process of compression and recovery, the spring 307 converts the vibration energy into elastic potential energy and gradually dissipates it, thereby achieving a shock absorbing effect. The device can effectively reduce the vibration of the tool during the processing process, improve the processing accuracy and the service life of the tool, and also reduce the impact on other parts of the machine tool, thereby improving the stability and reliability of the entire processing system.

[0026] Furthermore, a fixing screw 102 connected to the CNC machine tool spindle is fixedly connected to the center of the first mounting seat 101 , and a first mounting groove 107 is formed at the bottom of the first mounting seat 101 . The first mounting groove 107 is threadedly connected to the first connecting shell 302 .

[0027] A first mounting groove 107 is provided at the bottom of the first mounting seat 101, and the first mounting groove 107 is connected to the first connection shell 302 by threaded connection. Such a design is to ensure that the shock absorbing mechanism 3 can be firmly combined with the upper tool seat 1, so that the vibration will not affect the connection stability between the tool and the spindle after the shock absorbing treatment, thereby ensuring that the vibration generated by the tool during high-speed rotation and cutting can be effectively absorbed and weakened while performing efficient and high-precision cutting processing, thereby maintaining good processing quality and tool life.

[0028] Furthermore, grooves 103 are correspondingly opened on the left and right sides inside the first mounting seat 101, and a round table push block 104 is arranged inside the groove 103. A rotating rod 105 is fixedly connected to the opposite side of the round table push block 104, and the opposite end of the rotating rod 105 extends to the outside of the first mounting seat 101 and is rotatably connected thereto.

[0029] Furthermore, guide grooves 106 are correspondingly opened on the left and right sides of the bottom of the first mounting seat 101, and the guide grooves 106 are connected to the slot 103. A slide rod 306 is slidably connected to the inner wall of the guide groove 106, and the top of the slide rod 306 extends to the inside of the slot 103 and is slidably connected to the bottom of the truncated cone push block 104.

[0030] When the rotating rod 105 rotates, it will drive the cone push block 104 to move horizontally in the slot 103. When the cone push block 104 gradually moves into the slot 103, it will gradually squeeze the slide bar 306. The squeezed slide bar 306 can move downward along the guide groove 106. The downward movement of the slide bar 306 cooperates with the spring 307 to form a passive damping control system, which helps to absorb and reduce the vibration of the tool during high-speed cutting and improve processing stability.

[0031] Furthermore, a second mounting groove 202 is opened at the top of the second mounting seat 201, and the second mounting groove 202 is threadedly connected to the second connecting shell 303. A grinding knife 203 is provided at the center of the second mounting seat 201. The top of the grinding knife 203 extends into the inside of the sliding cavity 304 and is threadedly connected to the bottom of the slide plate 305. The bottom of the grinding knife 203 extends to the bottom of the second mounting seat 201 and is fixedly connected to a grinding head 204.

[0032] A second mounting groove 202 is provided on the top of the second mounting seat 201, which is fixed to the second connecting shell 303 by a threaded connection. This design allows the second mounting seat 201 to be firmly engaged with the shock absorbing mechanism 3, ensuring that during the tool processing, the buffering effect of the shock absorbing mechanism 3 can be smoothly transmitted to the tool body, thereby improving the processing stability. The above design takes into account both shock absorption and precise control, which can not only effectively reduce the vibration of the tool during high-speed cutting, but also ensure the precise positioning and effective operation of the grinding knife 203, reflecting the high standards of modern CNC processing for tool stability and precision.

[0033] Furthermore, oil storage grooves 308 are correspondingly opened on the left and right sides of the interior of the positioning shell 301 . The oil storage grooves 308 penetrate the inner wall of the positioning shell 301 and are slidably connected to the entire body of the slide plate 305 .

[0034] Oil storage grooves 308 are provided on the left and right sides of the positioning shell 301. The oil storage grooves 308 pass through the inner wall of the positioning shell 301 and are slidably connected to the entire body of the slide plate 305. This means that when the slide plate 305 slides up and down in the sliding cavity 304, it can always be immersed in lubricating oil, which greatly reduces the friction resistance between the slide plate 305 and the inner wall of the sliding cavity 304, and improves the smoothness of sliding and the vibration reduction effect.

[0035] Furthermore, oil filling grooves 309 are correspondingly opened on the left and right sides of the positioning shell 301 , the bottom of the oil filling groove 309 is connected to the top of the oil storage tank 308 , and oil filling pipes 310 adapted to the oil filling grooves 309 are provided on the left and right sides of the outer wall of the positioning shell 301 .

[0036] The oil filling groove 309 is arranged on the left and right sides of the positioning shell 301, and the bottom thereof is connected with the top of the oil storage tank 308. The left and right sides of the outer wall of the positioning shell 301 are provided with oil filling pipes 310 adapted to the oil filling groove 309, which provides a convenient channel for external injection of lubricating oil. Lubricating oil can be injected into the oil filling groove 309 regularly or as needed through the oil filling pipe 310, ensuring that the shock absorbing mechanism 3 is in a good lubrication state for a long time, extending the service life of the tool handle, and also helping to improve processing accuracy and tool life.

[0037] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A damping CNC tool holder, comprising an upper tool holder (1) and a lower tool holder (2) arranged below the upper tool holder, a damping mechanism (3) being connected between the upper tool holder (1) and the lower tool holder (2), the upper tool holder (1) comprising a first mounting seat (101), the lower tool holder (2) comprising a second mounting seat (201), characterized in that: The shock absorbing mechanism (3) comprises a positioning shell (301), the top and bottom of the positioning shell (301) are respectively fixedly connected to a first connecting shell (302) and a second connecting shell (303), a sliding cavity (304) is provided at the center of the interior of the positioning shell (301), a sliding plate (305) is slidably connected to the inner wall of the sliding cavity (304), sliding rods (306) are connected to the left and right sides of the top of the sliding plate (305), the top of the sliding rod (306) extends to the inside of the first mounting seat (101) and is slidably connected thereto, and a spring (307) is fixedly connected between the sliding plate (305) and the sliding rod (306).

2. A damping CNC tool handle according to claim 1, characterized in that: A fixing screw (102) connected to the CNC machine tool spindle is fixedly connected to the center of the first mounting seat (101), a first mounting groove (107) is provided at the bottom of the first mounting seat (101), and the first mounting groove (107) is threadedly connected to the first connection shell (302).

3. A damping CNC tool handle according to claim 2, characterized in that: The first mounting seat (101) has slots (103) formed on the left and right sides thereof, a truncated cone push block (104) being provided inside the slot (103), a rotating rod (105) being fixedly connected to the opposite side of the truncated cone push block (104), and an opposite end of the rotating rod (105) extending to the outside of the first mounting seat (101) and being rotatably connected thereto.

4. A damping CNC tool handle according to claim 3, characterized in that: The first mounting seat (101) has guide grooves (106) correspondingly formed on the left and right sides of the bottom, the guide grooves (106) being connected to the slot (103) and the inner wall of the guide groove (106) being slidably connected to a slide rod (306), the top of the slide rod (306) extending into the slot (103) and being slidably connected to the bottom of the round table push block (104).

5. The damping CNC tool handle according to claim 1, characterized in that: A second mounting groove (202) is provided at the top of the second mounting seat (201), the second mounting groove (202) is threadedly connected to the second connecting shell (303), a grinding knife (203) is provided at the center of the interior of the second mounting seat (201), the top of the grinding knife (203) extends into the interior of the sliding cavity (304) and is threadedly connected to the bottom of the sliding plate (305), and the bottom of the grinding knife (203) extends to the bottom of the second mounting seat (201) and is fixedly connected to a grinding head (204).

6. The damping CNC tool handle according to claim 1, characterized in that: Oil storage grooves (308) are correspondingly provided on the left and right sides of the interior of the positioning shell (301). The oil storage grooves (308) penetrate the inner wall of the positioning shell (301) and are slidably connected to the entire body of the slide plate (305).

7. A damping CNC tool handle according to claim 6, characterized in that: Oil filling grooves (309) are correspondingly provided on the left and right sides of the interior of the positioning shell (301); the bottom of the oil filling groove (309) is communicated with the top of the oil storage groove (308); and oil filling pipes (310) adapted to the oil filling grooves (309) are provided on the left and right sides of the outer wall of the positioning shell (301).

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