Novel machine tool cutter holder

Abstract

The utility model provides a novel machine tool cutter holder which comprises a cutter holder base, a left pressing arm, a right pressing arm, a compression spring and an automatic locking device, the left pressing arm and the right pressing arm are oppositely arranged on the upper end face of the cutter holder base, and the left pressing arm and the right pressing arm are installed on the cutter holder base in a hinged mode through arranged pin shafts respectively. The clamping end of the left pressing arm and the clamping end of the right pressing arm can be close to each other or away from each other, the compression spring is installed between the other ends, opposite to the clamping ends, of the left pressing arm and the right pressing arm in a compressed mode, and the automatic locking device is installed between the other ends, opposite to the clamping ends, of the left pressing arm and the right pressing arm; by the adoption of the machine tool cutter holder structure, the automatic clamping and loosening functions of the left pressing arm and the right pressing arm are achieved by ingeniously utilizing the trigger compression spring and the change of the contact position between the trigger piece and the inner side face of the left pressing arm and the inner side face of the right pressing arm, the number of parts of the machine tool cutter holder structure is small, and the manufacturing cost is lower; and the whole automatic locking device is formed by matching pure mechanical parts, so that the stability is better.

Description

Technical Field

[0001] This utility model relates to the field of robotic processing equipment technology, specifically to a novel machine tool clip. Background Technology

[0002] Machine tool clips are crucial components in machine tool processing, significantly impacting tool performance. Used in the tool magazines of CNC machining centers, they hold the tool holders, allowing the spindle to move tools into or remove them from the magazine as needed during machining.

[0003] Existing CNC machine tool clips are generally made of plastic or other materials (such as steel). When made of plastic, the clips utilize the elastic deformation of plastic to achieve the clamping function. However, due to the inherent properties of plastic, it is prone to cracking and breaking after long-term use, reducing the lifespan of the clips. For clips made of other materials, the structure used to achieve the clamping function is more complex.

[0004] For example, patent CN219026666U, entitled "An Adjustable CNC Machine Tool Clip," describes a clip with two grooves on the top of its base. Slider blocks are slidably connected to each groove, and each slider is threaded with a lead screw. One end of each lead screw is fixedly connected to a bevel gear, which in turn meshes with a bevel gear. The bevel gear is then fixedly connected to a rotating rod. In use, rotating the rotating rod causes the bevel gear to rotate, which in turn rotates the bevel gear, which in turn rotates the lead screw. This rotation of the lead screw moves the slider, which in turn moves the movable clamp, which in turn moves its clamping surface, thus clamping the tool. Therefore, the clip structure described above has many parts, is relatively complex, and has a high manufacturing cost. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a new type of machine tool clip to solve the problem that existing machine tool clips are relatively complex in structure and have high manufacturing costs.

[0006] In order to achieve the above purpose, the technical solution adopted by the present utility model is as follows:

[0007] This application provides a novel machine tool clip, comprising a clip base, a left pressure arm, a right pressure arm, a compression spring, and an automatic locking device. The left and right pressure arms are arranged opposite to each other on the upper surface of the clip base. One end of each of the left and right pressure arms is formed with a clamping end that cooperates to clamp the tool. The clamping end extends outward from one side of the clip base. The left and right pressure arms are respectively hinged to the clip base by a pin. The clamping ends of the left and right pressure arms can move closer or further apart from each other. The compression spring is compressed and installed on the other end of the left and right pressure arms opposite to the clamping ends. The automatic locking device is installed on the other end of the left and right pressure arms opposite to the clamping ends and is used to control the clamping and loosening of the left and right pressure arms.

[0008] Furthermore, a roller is also installed at the front end of the clamping end.

[0009] Furthermore, the clamping end has a concave arc-shaped structure.

[0010] Furthermore, a positioning block is provided between the left pressure arm and the right pressure arm, and the positioning block is fixedly installed on the outer edge of the upper end face of the blade holder base near the clamping end.

[0011] Furthermore, the automatic locking device includes a pressure block, a trigger element, a trigger compression spring, and a base. The base is located at the outer edge of the upper end of the blade holder base, opposite to the other end of the clamping end. The bottom end of the trigger element is mounted on the base via the trigger compression spring. The pressure block is fixedly mounted on the top end of the trigger element. The trigger compression spring has a first position and a second position. When the trigger compression spring is in the first position, the outer edge of the trigger element presses against the inner surface of the other end of the left and right pressure arms, respectively, causing the clamping end openings of the left and right pressure arms to narrow. When the trigger compression spring is in the second position, the trigger element moves downward and disengages from the inner surface of the other end of the left and right pressure arms, causing the clamping end openings of the left and right pressure arms to widen.

[0012] Furthermore, the trigger includes a cylindrical trigger portion and a connecting portion. The connecting portion extends upward from the top surface of the trigger portion, and the bottom end of the trigger portion is connected to the base via the trigger compression spring. The pressure block is fixedly installed on the connecting portion. The outer diameter of the trigger portion is larger than the outer diameter of the connecting portion. When the trigger compression spring is in the first position, the outer edge of the trigger portion presses against the inner surface of the other end of the left and right pressure arms, respectively, causing the clamping end openings of the left and right pressure arms to narrow. When the trigger compression spring is in the second position, the trigger portion moves downward and disengages from the inner surface of the other end of the left and right pressure arms, causing the clamping end openings of the left and right pressure arms to widen.

[0013] The beneficial effects of this utility model are as follows:

[0014] By adopting the above-mentioned machine tool holder structure, the automatic clamping and loosening functions of the left and right pressure arms are realized by cleverly utilizing the trigger compression spring in the automatic locking device and the change in the contact position between the trigger and the inner side of the left and right pressure arms. The above-mentioned machine tool holder structure has fewer parts and lower manufacturing cost; and since the entire automatic locking device is composed of purely mechanical parts, it has better stability. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the novel machine tool clip in the embodiments of this application.

[0016] Figure 2 This is a top view structural diagram of the novel machine tool clip in the embodiments of this application.

[0017] Figure 3 This is an exploded view of the assembly structure of the novel machine tool clip in the embodiments of this application.

[0018] Figure 4 for Figure 3 A magnified schematic diagram of the structure at point A in the diagram.

[0019] Figure 5 This is a schematic diagram of the structure of the novel machine tool holder for clamping the tool in the embodiments of this application.

[0020] Figure 6 This is a schematic diagram of the automatic locking device installed between the left and right pressure arms in an embodiment of this application.

[0021] In the picture:

[0022] 10-Machine tool holder, 100-Right pressure arm, 200-Left pressure arm, 300-Automatic locking device, 301-Pressure block, 302-Trigger element, 3021-Connecting part, 3022-Trigger element, 303-Base, 400-Tool holder base, 500-Positioning block, 600-Compression spring, 700-Roller, 800-Clamping end, 900-Free end, 110-Pin. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0024] See appendix Figure 1 To be continued Figure 4 As shown, this embodiment provides a novel machine tool clip 10, which includes a clip base 400, a left pressure arm 200, a right pressure arm 100, and a compression spring 600.

[0025] Refer to the attached Figure 1 , Attachment Figure 2 , Attachment Figure 4 and appendix Figure 5 As shown, the left pressure arm 200 and the right pressure arm 100 are mounted on the upper surface of the tool holder base 400, arranged symmetrically from left to right. Each of the left and right pressure arms includes two opposing ends: one end, the clamping end 800, is used to contact the outer surface of the tool and has a concave arc-shaped structure; the other end is a freely extending end, the free end 900. The clamping end 800 of the left and right pressure arms 200 extends outward from one side of the tool holder base 400, while the free end 900 is located on the upper surface of the tool holder base 400.

[0026] The left pressure arm 200 is hinged to the upper surface of the tool holder base 400 via a pin 110 near the clamping end 800, allowing the left pressure arm 200 to rotate horizontally relative to the tool holder base 400. Similarly, the right pressure arm 100 is also hinged to the upper surface of the tool holder base 400 via a pin 110 near the clamping end 800, allowing the right pressure arm 100 to rotate horizontally relative to the tool holder base 400.

[0027] Refer to the attached Figure 1 As shown, in order to provide the left pressure arm 200 and the right pressure arm 100 with clamping force for the tool, a compression spring 600 is installed between the left pressure arm 200 and the right pressure arm 100. In this embodiment, the compression spring 600 is installed between the left pressure arm 200 and the right pressure arm 100 near the free end 900, with one end of the compression spring 600 connected to the left pressure arm 200 and the other end connected to the right pressure arm 100. The number of compression springs 600 can be flexibly set as needed.

[0028] In this way, during the clamping process of the left pressure arm 200 and the right pressure arm 100, the tool will cause the left pressure arm 200 and the right pressure arm 100 to move away from each other. At this time, the tool will exert an outward squeezing force on the left pressure arm 200 and the right pressure arm 100 respectively, causing the clamping ends 800 of the left pressure arm 200 and the right pressure arm 100 to rotate outward, while the free ends 900 of the left pressure arm 200 and the right pressure arm 100 will move closer to each other and squeeze the compression spring 600. The compression spring 600 in the compressed state will exert opposite forces on the left pressure arm 200 and the right pressure arm 100, causing the clamping ends 800 of the left pressure arm 200 and the right pressure arm 100 to form a clamping force on the tool in the center direction.

[0029] Refer to the attached Figure 1 , Attachment Figure 3 and appendix Figure 6As shown, an automatic locking device 300 is also provided at the free end 900 of the left pressure arm 200 and the right pressure arm 100. This automatic locking device 300 is used to control the clamping and loosening between the left pressure arm 200 and the right pressure arm 100. Specifically, in this embodiment, the automatic locking device 300 includes a pressure block 301, a trigger member 302, a trigger compression spring (not shown in the figure), and a base 303. The base 303 is located at the bottom end of the upper surface of the blade holder base 400 near the outer edge of the clamping end 800. The bottom end of the trigger member 302 is mounted on the base 303 via the trigger compression spring. The pressure block 301 is fixedly mounted on the top end of the trigger member 302. The trigger compression spring has a first position and a second position. The first position is when no external force is applied to the pressure block 301, and the trigger compression spring is in its original compressed state. The second position is when the robot presses down on the pressure block 301, and the trigger compression spring is compressed. When the trigger compression spring is in the first position, the outer edge of the trigger element presses against the inner arc-shaped inclined surfaces at the free ends 900 of the left and right pressure arms 200 and 100 respectively, applying a horizontal outward pushing force to the left and right pressure arms 200 and 100 respectively. This causes the compression spring between the left and right pressure arms 200 and 100 to be in an outward extended state. At this time, the openings at the free ends 900 of the left and right pressure arms 200 and 100 expand, while the openings at the clamping ends 800 of the left and right pressure arms 200 and 100 narrow, thereby clamping the tool holder. When the trigger compression spring is in the second position... When the trigger 302 is in place, it moves down and disengages from the inner arc-shaped oblique surface of the free end 900 of the left pressure arm 200 and the right pressure arm 100. When the free end 900 of the left pressure arm 200 and the right pressure arm 100 loses the outward edge squeezing force applied by the trigger 302, the compression spring 600 between the left pressure arm 200 and the right pressure arm 100 returns to its original state, causing the opening at the free end 900 of the left pressure arm 200 and the right pressure arm 100 to shrink, while at the same time causing the opening at the clamping end 800 of the left pressure arm 200 and the right pressure arm 100 to expand, thereby achieving the release of the tool holder.

[0030] Please refer to the appendix for further details. Figure 6As shown, in this embodiment, the trigger 302 includes a cylindrical trigger portion 3022 and a connecting portion 3021. The connecting portion 3021 extends upward from the top surface of the trigger portion 3022, and the bottom end of the trigger portion 3022 is connected to the base 303 via a trigger compression spring. The pressure block 301 is fixedly installed on the connecting portion 3021. The outer diameter of the trigger portion 3022 is larger than the outer diameter of the connecting portion 3021. Thus, when the reset compression spring is in the first position, the outer surface of the trigger portion 3022 with the larger outer diameter is pressed against the inner arc-shaped inclined surface at the free end 900 of the left pressure arm 200 and the right pressure arm 100, thus pressing against the left pressure arm 200. Arm 200 and right pressure arm 100 apply a horizontal outward force; when the reset compression spring is in the second position, since the reset compression spring is in a downward compression state, the trigger part 3022 will move downward with the reset compression spring, and the trigger part 3022 will disengage from the inner arc slope at the free end 900 of the left pressure arm 200 and the right pressure arm 100. At the same time, the connecting part 3021 also moves downward with the trigger part 3022. Since the outer diameter of the connecting part 3021 is small, the connecting part 3021 will not compress the inner arc slope at the free end 900 of the left pressure arm 200 and the right pressure arm 100.

[0031] When the trigger compression spring is in the first position, the outer edge of the trigger part 3022 presses against the inner arc-shaped inclined surfaces at the free ends 900 of the left and right pressure arms 200 and 100 respectively, applying a horizontal outward pushing force to the left and right pressure arms 200 and 100 respectively. This causes the compression spring between the left and right pressure arms 200 and 100 to be in an outward extended state. At this time, the openings at the free ends 900 of the left and right pressure arms 200 and 100 expand, while the openings at the clamping ends 800 of the left and right pressure arms 200 and 100 narrow, thereby clamping the tool holder. When the trigger compression spring is in the first position, the outer edge of the trigger part 3022 presses against the inner arc-shaped inclined surfaces at the free ends 900 of the left and right pressure arms 200 and 100 respectively. When in the second position, the trigger 3022 moves down and disengages from the arc-shaped inner surface of the free end 900 of the left pressure arm 200 and the right pressure arm 100. When the free end 900 of the left pressure arm 200 and the right pressure arm 100 loses the outward edge pressing force applied by the trigger 302, the compression spring 600 between the left pressure arm 200 and the right pressure arm 100 returns to its original state, causing the opening at the free end 900 of the left pressure arm 200 and the right pressure arm 100 to shrink, while at the same time causing the opening at the clamping end 800 of the left pressure arm 200 and the right pressure arm 100 to expand, thereby achieving the release of the tool holder.

[0032] Refer to the attached Figure 1 To be continued Figure 3As shown, in order to ensure that the left pressure arm 200 and the right pressure arm 100 are in the correct installation position on the tool holder base 400, a positioning block 500 is also provided between the left pressure arm 200 and the right pressure arm 100. The positioning block 500 is fixedly installed on the outer edge of the upper end face of the tool holder base 400 near the clamping end 800.

[0033] In addition, to facilitate the smooth entry of the tool into the clamping space enclosed by the left pressure arm 200 and the right pressure arm 100, a roller 700 is installed at the front end of the clamping end 800. The roller 700 can rotate horizontally relative to the clamping end 800. In this way, when the tool enters the clamping space enclosed by the left pressure arm 200 and the right pressure arm 100, the outer surface of the tool contacts the roller 700, and the tool can smoothly enter the clamping space.

[0034] In some embodiments, the machine tool clip 10 is made of aluminum alloy and is formed in one piece in a mold through a die-casting process. The part has high dimensional accuracy, fewer machining positions are required during subsequent assembly, the machining time is shorter, the cost is lower, and the economic benefits are more obvious.

[0035] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A novel machine tool clip, the machine tool clip comprising a clip base, characterized in that, The machine tool clip also includes a left pressure arm, a right pressure arm, a compression spring, and an automatic locking device. The left and right pressure arms are arranged opposite each other on the upper surface of the clip base. One end of each of the left and right pressure arms is formed with a clamping end that cooperates to clamp the tool. The clamping end extends outward from one side of the clip base. The left and right pressure arms are respectively hinged to the clip base by a pin. The clamping ends of the left and right pressure arms can move closer or further apart from each other. The compression spring is compressed and installed on the left and right pressure arms between the other ends opposite to the clamping ends. The automatic locking device is installed on the left and right pressure arms between the other ends opposite to the clamping ends to control the clamping and loosening of the left and right pressure arms.

2. The novel machine tool holder according to claim 1, characterized in that, A roller is also installed at the front end of the clamping end.

3. A novel machine tool holder according to claim 1 or 2, characterized in that, The clamping end has a concave arc-shaped structure.

4. A novel machine tool holder according to claim 1, characterized in that, A positioning block is also provided between the left and right pressure arms. The positioning block is fixedly installed on the outer edge of the upper surface of the tool holder base near the clamping end.

5. A novel machine tool holder according to claim 4, characterized in that, The automatic locking device includes a pressure block, a trigger element, a trigger compression spring, and a base. The base is located at the outer edge of the bottom end of the upper surface of the blade holder base, opposite to the other end of the clamping end. The bottom end of the trigger element is mounted on the base via the trigger compression spring. The pressure block is fixedly mounted on the top end of the trigger element. The trigger compression spring has a first position and a second position. When the trigger compression spring is in the first position, the outer edge of the trigger element presses against the inner surface of the other end of the left and right pressure arms, respectively, causing the clamping end openings of the left and right pressure arms to narrow. When the trigger compression spring is in the second position, the trigger element moves down and disengages from the inner surface of the other end of the left and right pressure arms, causing the clamping end openings of the left and right pressure arms to widen.

6. A novel machine tool holder according to claim 5, characterized in that, The trigger element includes a cylindrical trigger portion and a connecting portion. The connecting portion extends upward from the top surface of the trigger portion. The bottom end of the trigger portion is connected to the base through the trigger compression spring. The pressure block is fixedly installed on the connecting portion. The outer diameter of the trigger portion is larger than the outer diameter of the connecting portion. When the trigger compression spring is in the first position, the outer edge of the trigger portion presses against the inner surface of the other end of the left and right pressure arms, respectively, causing the clamping end openings of the left and right pressure arms to narrow. When the trigger compression spring is in the second position, the trigger portion moves downward and disengages from the inner surface of the other end of the left and right pressure arms, causing the clamping end openings of the left and right pressure arms to widen.

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