Tool changing device for a vertical broaching machine

Abstract

The application provides a tool changing device of a vertical broaching machine, comprising a machine bed, a clamp, a transfer mechanism, a temporary fixing mechanism and a tool. The clamp is installed on the machine bed. The transfer mechanism comprises a track, a sliding frame, a lifting driver, a first rotating arm and a second rotating arm. The track is installed on the machine bed, the sliding frame is slidingly installed on the track, the lifting driver is installed on the machine bed and can drive the sliding frame to slide in a first direction, one end of the first rotating arm is hinged to the sliding frame and can rotate relative to the sliding frame in the first direction, and one end of the second rotating arm is hinged to the end of the first rotating arm away from the sliding frame and can rotate relative to the first rotating arm in the first direction. The temporary fixing mechanism is installed on the end of the second rotating arm away from the first rotating arm and is used for clamping the tool. The tool changing device of the vertical broaching machine provided by the application does not need manual carrying, reduces the labor intensity, improves the tool changing efficiency and eliminates the safety hazard.

Description

Technical Field

[0001] This application relates to the field of broaching equipment technology, and in particular to a tool changing device for a vertical broaching machine. Background Technology

[0002] A vertical broaching machine is a specialized machine tool with a vertically arranged spindle that completes shaping cuts by relying on the vertical linear motion of a broach. Currently, a vertical broaching machine typically consists of a bed, a main drive system, cutting tools, and a fixture. The cutting tool is mounted in the fixture and the main drive system processes the workpiece. During use, the cutting tool needs to be changed according to machining requirements to produce workpieces of different specifications. Changing the cutting tool is difficult and inefficient due to its weight and high mounting height, and can even pose safety hazards. Summary of the Invention

[0003] The purpose of this application is to provide a tool changing device for a vertical broaching machine, so as to solve the technical problems of high difficulty in tool changing, low efficiency and safety hazards in the prior art.

[0004] To achieve the above objectives, the technical solution adopted in this application is: to provide a tool changing device for a vertical broaching machine, comprising: Bed frame; The clamp is installed on the bed; A transfer mechanism includes a track, a carriage, a lifting drive, a first rotating arm, and a second rotating arm. The track is mounted on the bed, the carriage is slidably mounted on the track, the lifting drive is mounted on the bed and can drive the carriage to slide along a first direction, one end of the first rotating arm is hinged to the carriage and can rotate relative to the carriage around the first direction, and one end of the second rotating arm is hinged to the end of the first rotating arm away from the carriage and can rotate relative to the first rotating arm around the first direction. A temporary fixing mechanism is installed at the end of the second rotating arm away from the first rotating arm and is used to clamp the cutting tool.

[0005] Optionally, the cutting tool includes a tool holder, an annular groove, and a bevel, wherein the annular groove is formed on the side of the tool holder, and the bevel is formed at the end of the tool holder.

[0006] Optionally, the temporary fixing mechanism includes two first bearing plates and a first U-shaped rod. The two first bearing plates are installed at the end of the second rotating arm away from the first rotating arm, and the first U-shaped rod is installed between the two first bearing plates and can be engaged in the annular groove.

[0007] Optionally, the first U-shaped rod includes two first straight rods, a first arc rod, and a groove. The two first straight rods are arranged in parallel and are respectively installed on the two first bearing plates. The first arc rod is connected between the two first straight rods, and the groove is formed in the first arc rod.

[0008] Optionally, the transfer mechanism further includes a first pull rod and a second pull rod, wherein the first pull rod is mounted on the first rotating arm and the second pull rod is mounted on the second rotating arm.

[0009] Optionally, the temporary fixing mechanism includes two second bearing plates, a second U-shaped rod, an adjusting component, and a fixing component. The two second bearing plates are each installed at the end of the second rotating arm away from the first rotating arm. The second U-shaped rod is installed between the two second bearing plates and can be engaged in the annular groove. The adjusting component is installed at the end of the second rotating arm away from the first rotating arm. The fixing component is installed on the adjusting component and can move along a second direction under the drive of the adjusting component. It is also configured to limit the tool bar by the inclined surface.

[0010] Optionally, the second U-shaped rod includes two second straight rods and a second arc rod, with the second arc rod connecting the two second straight rods, and the included angle between the two second straight rods being an acute angle.

[0011] Optionally, the fixing component includes a slider, a knob, a screw sleeve, a movable frame, multiple elastic connectors, a fixed cylinder, and a circular through hole. The slider is mounted on the adjusting component, the knob is rotatably mounted on the slider, the screw sleeve passes through the slider and the knob, is engaged with the slider, and is screwed to the knob. The movable frame is mounted on one end of the screw sleeve near the second U-shaped rod. Multiple elastic connectors are mounted on the movable frame and symmetrically arranged at both ends of the movable frame along the second direction. The fixed cylinder is mounted between the multiple elastic connectors, and the circular through hole is formed in the fixed cylinder.

[0012] Optionally, the slider includes a block, two limiting bosses and two limiting arc grooves. The two limiting bosses are connected to the block, and the two limiting arc grooves are respectively formed on the two limiting bosses and are configured to correspond one-to-one with the two limiting bosses. The knob includes a cylindrical body and a convex ring. The cylindrical body is sleeved on the outer periphery of the threaded sleeve and screwed to the threaded sleeve. The convex ring is formed on the outer periphery of the cylindrical body and is located at one end of the cylindrical body near the block, and is engaged in the two limiting arc grooves.

[0013] Optionally, the adjustment assembly includes a support frame, a guide rod, and a screw. The support frame is mounted on the end of the second rotating arm away from the first rotating arm. The guide rod is mounted on the support frame and passes through one end of the slider. The screw is rotatably mounted on the support frame, passes through the other end of the slider, and is screwed to the slider.

[0014] The beneficial effects of the tool changing device for a vertical broaching machine provided in this application are as follows: This application provides a tool changing device for a vertical broaching machine. Under the action of a lifting drive, a first rotating arm and a second rotating arm can be driven to move along a first direction, facilitating the installation and removal of the tool from the second rotating arm. With the combined action of the first and second rotating arms, a temporary fixing mechanism can rotate around two different axes, allowing for accurate alignment with the fixture and facilitating tool installation and removal. Furthermore, the combined action of the first and second rotating arms enables the tool to be moved into or out of the machine bed. Compared to existing technologies, this eliminates the need for manual handling, reduces labor intensity, improves tool changing efficiency, and eliminates safety hazards. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A perspective view of the overall structure of a tool changing device for a vertical broaching machine provided in Embodiment 1 of this application; Figure 2 A first-view perspective perspective view of the transfer mechanism, temporary fixing mechanism, and cutting tool of a tool changing device for a vertical broaching machine provided in Embodiment 1 of this application; Figure 3 A second-view perspective perspective view of the transfer mechanism, temporary fixing mechanism, and cutting tool of a tool changing device for a vertical broaching machine provided in Embodiment 1 of this application; Figure 4 for Figure 3 A magnified view of a section at point A in the middle; Figure 5 A perspective view of the first U-shaped rod of a tool changing device for a vertical broaching machine provided in Embodiment 1 of this application; Figure 6 A perspective view of a tool changing device for a vertical broaching machine provided in Embodiment 1 of this application; Figure 7A first-view perspective perspective view of a tool changing device for a vertical broaching machine provided in Embodiment 2 of this application; Figure 8 A second-view perspective perspective view of a tool changing device for a vertical broaching machine provided in Embodiment 2 of this application; Figure 9 This is a perspective view of the internal structure of a tool changing device for a vertical broaching machine provided in Embodiment 2 of this application; Figure 10 for Figure 7 A magnified view of a section at point B in the middle; Figure 11 for Figure 9 A magnified view of a section at point C; Figure 12 for Figure 9 A magnified view of a section at point D.

[0017] The following are the labeling elements in the figure: 1. Bed frame; 2. Fixtures; 3. Transfer mechanism; 31. Track; 32. Carriage; 33. Lifting drive; 34. First rotating arm; 35. Second rotating arm; 36. First tie rod; 37. Second tie rod; 4. Temporary fixing mechanism; 41. First bearing plate; 42. First U-shaped rod; 421. First straight rod; 422. First arc rod; 423. Groove; 43. Second bearing plate; 44. Second U-shaped rod; 441. Second straight rod; 442. Second arc rod; 45. Adjusting assembly; 451. Bearing frame; 452. Guide rod; 453. Screw; 46. Fixing assembly; 461. Slider; 4611. Block; 4612. Limiting 4613. Boss; 4614. Limiting arc groove; 4615. Snap-fit ​​strip; 462. Knob; 4621. Cylinder; 4622. Convex ring; 463. Screw sleeve; 4631. Sleeve body; 4632. External thread; 4633. Snap-fit ​​groove; 464. Moving frame; 465. Elastic connector; 4651. Limiting rod; 4652. Limiting block; 4653. Elastic structure; 466. Fixed cylinder; 467. Circular through hole; 47. Baffle; 5. Cutting tool; 51. Tool holder; 52. Circular groove; 53. Inclined surface. Detailed Implementation

[0018] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0019] It should be noted that when a component is referred to as being "mounted to," "fixed to," or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0020] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0022] Example 1 like Figures 1 to 6 As shown, this application provides a tool changing device for a vertical broaching machine, including a bed 1, a clamp 2, a transfer mechanism 3, a temporary fixing mechanism 4, and a cutting tool 5. The clamp 2 is mounted on the bed 1. The transfer mechanism 3 includes a rail 31, a carriage 32, a lifting drive 33, a first rotating arm 34, and a second rotating arm 35. The rail 31 is mounted on the bed 1, the carriage 32 is slidably mounted on the rail 31, and the lifting drive 33 is mounted on the bed 1 and can drive the carriage 32 to slide along a first direction. One end of the first rotating arm 34 is hinged to the carriage 32 and can rotate relative to the carriage 32 around the first direction. One end of the second rotating arm 35 is hinged to the end of the first rotating arm 34 away from the carriage 32 and can rotate relative to the first rotating arm 34 around the first direction. The temporary fixing mechanism 4 is mounted on the end of the second rotating arm 35 away from the first rotating arm 34 and is used to clamp the cutting tool 5.

[0023] It should be noted that the "above" and "below" directions refer to the bidirectional direction of the shortest line connecting the two ends of track 31, i.e., the vertical direction, as shown below. Figure 2 The X-axis is shown in the diagram. The second direction below refers to the bidirectional direction of the shortest line connecting the two ends of the second rotating arm 35, specifically as follows: Figure 2 The Y-axis is shown in the figure.

[0024] This application provides a tool changing device for a vertical broaching machine. Under the action of a lifting drive 33, the first rotating arm 34 and the second rotating arm 35 can be driven to move along a first direction, facilitating the installation and removal of the tool 5 from the second rotating arm 35. Under the combined action of the first rotating arm 34 and the second rotating arm 35, the temporary fixing mechanism 4 can rotate around two different axes, thereby accurately aligning the temporary fixing mechanism 4 with the clamp 2, facilitating the installation and removal of the tool 5 from the clamp 2. Furthermore, under the combined action of the first rotating arm 34 and the second rotating arm 35, the tool 5 can be moved into or out of the machine bed 1. Compared with the prior art, manual handling is eliminated, reducing labor intensity, improving tool changing efficiency, and eliminating safety hazards. Moreover, during the transfer process, the tool 5 can be kept vertical, preventing damage from contact and effectively protecting the tool 5.

[0025] Alternatively, the lifting drive 33 can be configured as an electric hoist or winch.

[0026] In one embodiment of this application, please refer to Figures 1 to 6 The cutting tool 5 includes a tool holder 51, an annular groove 52, and a bevel 53. The annular groove 52 is formed on the side of the tool holder 51, and the bevel 53 is formed at the end of the tool holder 51. The temporary fixing mechanism 4 includes two first bearing plates 41 and a first U-shaped rod 42. The two first bearing plates 41 are both installed at the end of the second rotating arm 35 away from the first rotating arm 34. The first U-shaped rod 42 is installed between the two first bearing plates 41 and can be engaged in the annular groove 52.

[0027] With this configuration, the tool holder 51 can be engaged with the first U-shaped rod 42 by the annular groove 52, thus preventing the tool holder 51 from falling off. Under the action of the two first bearing plates 41, the tool holder 51 can be supported on the end of the second rotating arm 35 away from the first rotating arm 34, so that the tool holder 51 can rotate around two different axes to achieve transfer.

[0028] Please refer to one embodiment of this application as well. Figures 1 to 6 The first U-shaped rod 42 includes two first straight rods, a first arc rod, and a groove 423. The two first straight rods are arranged in parallel and are respectively installed on two first bearing plates 41. The first arc rod is connected between the two first straight rods, and the groove 423 is formed in the first arc rod.

[0029] This configuration, under the action of the two first straight rods, and by engaging with the annular groove 52, limits the movement of the tool holder 51 in the first direction, preventing it from moving in that direction. This helps improve the stability of the tool holder 51's movement in the first direction and prevents it from falling off. Under the action of the first arc rod, the two first straight rods are connected, improving the structural stability between them and ensuring the two first straight rods can stably support the tool holder 51. Under the action of the groove 423, the tool holder 51 is limited in the second direction, preventing it from moving in that direction and slipping out from between the two first straight rods. This prevents the tool holder 51 from falling off during transport and improves the stability of its transport.

[0030] In one embodiment of this application, see reference Figures 1 to 6 The transfer mechanism 3 also includes a first pull rod 36 and a second pull rod 37. The first pull rod 36 is installed on the first rotating arm 34, and the second pull rod 37 is installed on the second rotating arm 35.

[0031] With this configuration, the operator can rotate the first rotating arm 34 from the ground using the first lever 36. Similarly, the operator can rotate the second rotating arm 35 from the ground using the second lever 37. In summary, with the first lever 36 and the second lever 37 in operation, the operator does not need to climb to operate the first rotating arm 34 and the second rotating arm 35, further improving tool changing efficiency and eliminating safety hazards.

[0032] Optionally, the temporary fixing mechanism 4 includes a baffle 47 hinged to the end of the second rotating arm 35 away from the first rotating arm 34.

[0033] With this configuration, the baffle 47 can also prevent the cutter bar 51 from coming off between the two first straight bars in the second direction, thus eliminating safety hazards and ensuring the safety performance of the device.

[0034] The working principle of this embodiment is as follows: During tool changing, the tool 5 is removed from the fixture 2, the baffle 47 is rotated upwards, and then the annular groove 52 is aligned with the two first straight rods to engage the tool shank 51 between the first straight rods until the tool shank 51 is confined within the groove 423. The baffle 47 is then rotated downwards. The operator uses the first pull rod 36 and the second pull rod 37 to rotate the first rotating arm 34 and the second rotating arm 35 to remove the tool 5 from the bed 1. After the tool 5 is removed, the baffle 47 is rotated upwards to remove the tool 5 from between the two first straight rods, and another tool 5 is replaced. After the other tool 5 is confined within the groove 423, the baffle 47 is rotated downwards. The operator uses the first pull rod 36 and the second pull rod 37 to rotate the first rotating arm 34 and the second rotating arm 35 to move the tool 5 into the bed 1 until the tool 5 is aligned with the fixture 2.

[0035] Example 2 This embodiment is basically the same as Embodiment 1, the only difference being that, please refer to... Figure 1 , Figures 7 to 12 The temporary fixing mechanism 4 includes two second bearing plates 43, a second U-shaped rod 44, an adjusting component 45, and a fixing component 46. The two second bearing plates 43 are installed at the end of the second rotating arm 35 away from the first rotating arm 34. The second U-shaped rod 44 is installed between the two second bearing plates 43 and can be engaged in the annular groove 52. The adjusting component 45 is installed at the end of the second rotating arm 35 away from the first rotating arm 34. The fixing component 46 is installed on the adjusting component 45 and can move along the second direction under the drive of the adjusting component 45. It is also configured to limit the tool bar 51 by the inclined surface 53.

[0036] With this configuration, the two second support plates 43 can be used to mount the second U-shaped rod 44, which in turn supports the tool 5. The second U-shaped rod 44, through the annular groove 52, can limit the tool 5 along the first direction, thus preventing it from falling directly. The fixing component 46 can also limit the tool 5 along the second direction, preventing it from moving along that direction and falling off the second U-shaped rod 44, ensuring the tool 5 is stably contained within it. The combined action of the second U-shaped rod 44, the adjusting component 45, and the fixing component 46 allows tools 5 of different diameters to be contained within the second U-shaped rod 44, thus improving the applicability of the temporary fixing mechanism 4.

[0037] Please refer to one embodiment of this application as well. Figure 1 , Figures 7 to 12 The second U-shaped rod 44 includes two second straight rods and a second arc rod. The second arc rod is connected between the two second straight rods, and the included angle between the two second straight rods is an acute angle.

[0038] In this configuration, compared to the parallel arrangement of the two first straight rods in Embodiment 1, the two second straight rods in this embodiment are arranged intersectingly, and the included angle between the two second straight rods is an acute angle. Therefore, the two second straight rods can be used to clamp cutters 5 of different diameters and can limit the cutting tools 5 of different diameters along the first direction. Under the action of the second arc rod, it can be used to connect the two second straight rods, thereby improving the structural stability between the two second straight rods and enabling the two second straight rods to stably limit the cutting tools 5.

[0039] In one embodiment of this application, see reference Figure 1 , Figures 7 to 12The fixing component 46 includes a slider 461, a knob 462, a screw sleeve 463, a movable frame 464, multiple elastic connectors 465, a fixed cylinder 466, and a circular through hole 467. The slider 461 is installed on the adjusting component 45. The knob 462 is rotatably installed on the slider 461. The screw sleeve 463 passes through the slider 461 and the knob 462, and is engaged with the slider 461 and screwed to the knob 462. The movable frame 464 is installed at one end of the screw sleeve 463 near the second U-shaped rod 44. Multiple elastic connectors 465 are all installed on the movable frame 464 and are symmetrically arranged at both ends of the movable frame 464 along the second direction. The fixed cylinder 466 is installed between the multiple elastic connectors 465. The circular through hole 467 is opened in the fixed cylinder 466.

[0040] With this configuration, the fixed cylinder 466, through the circular through-hole 467 and in cooperation with the inclined surface 53, can limit the movement of cutters 5 of different diameters along the second direction, thus improving the applicability of the temporary fixing mechanism 4. Under the action of the adjusting component 45, the position of the fixed cylinder 466 can be adjusted along the second direction, ensuring that the fixed cylinder 466 can always be aligned with the cutter 5 at different positions, thus broadening its applicability. Under the action of the knob 462 and the screw sleeve 463, the moving frame 464 can drive the fixed cylinder 466 to move along the first direction. When the fixed cylinder 466 is aligned with the cutter 5, interference between the fixed cylinder 466 and the cutter 5 can be avoided, preventing the fixed cylinder 466 from failing to align with the cutter 5. Furthermore, the fixed cylinder 466 can move towards the cutter 5 along the first direction to limit the movement of the fixed cylinder 466 towards the cutter 5 along the second direction. Under the action of multiple elastic connectors 465, when the fixed cylinder 466 limits the cutter 5 via the inclined plane 53, the fixed cylinder 466 can move relative to the moving frame 464 in the first direction, and the axis of the fixed cylinder 466 can always coincide with the axis of the cutter 5, resulting in good fixing effect. Furthermore, after use, the elastic connectors 465 can also drive the fixed cylinder 466 to automatically reset, facilitating the next use.

[0041] Optionally, the elastic connector 465 includes a limiting rod 4651, a limiting block 4652, and an elastic structure 4653. The limiting rod 4651 is connected to the outer periphery of the fixed cylinder 466 and passes through the movable frame 464. The limiting block 4652 is connected to the end of the limiting rod 4651 away from the movable frame 464. The elastic structure 4653 is sleeved on the limiting rod 4651 and abuts against the movable frame 464 and the limiting block 4652.

[0042] This configuration, under the action of the limiting rod 4651, limits the movement of the fixed cylinder 466, ensuring that the fixed cylinder 466 can only move relative to the moving frame 464 in the second direction, thus improving the stability of the fixed cylinder 466's movement in the second direction. Under the action of the limiting block 4652, the elastic structure 4653 is limited, ensuring that the elastic structure 4653 is stably fitted onto the limiting rod 4651, preventing the elastic structure 4653 from detaching from the limiting rod 4651. Under the action of the elastic structure 4653, the limiting block 4652 and the limiting rod 4651 apply elastic force to the fixed cylinder 466, enabling an elastic connection between the fixed cylinder 466 and the moving frame 464.

[0043] Optionally, the elastic structure 4653 is configured as a spring or a sheet.

[0044] In one embodiment of this application, please refer to Figure 1 , Figures 7 to 12 The slider 461 includes a block 4611, two limiting bosses 4612 and two limiting arc grooves 4613. The two limiting bosses 4612 are connected to the block 4611, and the two limiting arc grooves 4613 are respectively opened on the two limiting bosses 4612 and are set in a one-to-one correspondence with the two limiting bosses 4612.

[0045] The knob 462 includes a cylindrical body 4621 and a convex ring 4622. The cylindrical body 4621 is sleeved on the outer periphery of the threaded sleeve 463 and screwed to the threaded sleeve 463. The convex ring 4622 is formed on the outer periphery of the cylindrical body 4621 and is located at one end of the cylindrical body 4621 near the block 4611, and is engaged in two limiting arc grooves 4613.

[0046] With this configuration, the limiting boss 4612 and the limiting arc groove 4613 can limit the convex ring 4622, allowing it to rotate only around the first direction, which in turn allows the cylinder 4621 to rotate only around the first direction. The rotation of the cylinder 4621 causes the threaded sleeve 463 to move along the first direction, which in turn drives the fixed cylinder 466 to move along the first direction, ensuring stable movement.

[0047] Optionally, the threaded sleeve 463 includes a sleeve body 4631, an external thread 4632, and multiple snap-fit ​​grooves 4633. The sleeve body 4631 passes through the block 4611, the external thread 4632 is formed on the outer periphery of the sleeve body 4631, and the multiple snap-fit ​​grooves 4633 are all formed on the outer periphery of the sleeve body 4631. The slider 461 also includes multiple snap-fit ​​strips 4614, which are all connected to the inner periphery of the block 4611 and are respectively snapped into the multiple snap-fit ​​grooves 4633.

[0048] This configuration, with the action of multiple snap-fit ​​slots 4633 and multiple snap-fit ​​strips 4614, can limit the movement of the sleeve 4631, ensuring that the sleeve 4631 can only move in the first direction. This prevents the sleeve 4631 from being unable to move in the first direction due to the rotation of the cylinder 4621. Furthermore, since the multiple snap-fit ​​strips 4614 are all formed on the block 4611, compared to the snap-fit ​​strips 4614 being formed on the sleeve 4631, it avoids the snap-fit ​​strips 4614 interfering with the cylinder 4621, preventing the cylinder 4621 from being unable to be screwed onto the sleeve 4631. In addition, the sleeve 4631 is hollow inside, allowing direct observation of whether the fixed cylinder 466 is aligned with the tool holder 51, making it convenient to use.

[0049] Please refer to one embodiment of this application as well. Figure 1 , Figures 7 to 12 The adjustment assembly 45 includes a support frame 451, a guide rod 452, and a screw 453. The support frame 451 is installed on the end of the second rotating arm 35 away from the first rotating arm 34. The guide rod 452 is installed on the support frame 451 and passes through one end of the slider 461. The screw 453 is rotatably installed on the support frame 451 and passes through the other end of the slider 461, and is screwed to the slider 461.

[0050] This configuration, under the action of the guide rod 452, guides the slider 461, ensuring that the slider 461 can only move in the second direction, thus improving the stability of the slider 461's movement in the second direction. The rotation of the screw 453 drives the slider 461 to move in the second direction, thereby adjusting the position of the fixed cylinder 466 in the second direction. This allows for fixing the tool 5 at different positions, making it widely applicable.

[0051] The working principle of this embodiment is as follows: When fixing cutters 5 of different diameters, first align the annular groove 52 with the second U-shaped rod 44 so that the two second straight rods are engaged in the annular groove 52 until the two second straight rods and the outer periphery of the cutter 5 come into contact. Rotate the screw 453 to move the slider 461 along the second direction until the circular through hole 467 of the fixing cylinder 466 is aligned with the cutter bar 51. Rotate the knob 462 to move the threaded sleeve 463 toward the cutter bar 51 along the first direction until the fixing cylinder 466 and the inclined surface 53 come into contact. Under the resistance of the inclined surface 53 of the cutter bar 51, the fixing cylinder 466 moves relative to the moving frame 464 along the second direction until the axis of the fixing cylinder 466 coincides with the axis of the cutter bar 51. Continue to rotate the knob 462 until the threaded sleeve 463 can no longer move.

[0052] One or more embodiments in this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of this application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of one or more embodiments in this application should be included within the protection scope of this application.

Claims

1. A tool changing device for a vertical broaching machine, characterized in that, include: Bed frame; The clamp is installed on the bed; A transfer mechanism includes a track, a carriage, a lifting drive, a first rotating arm, and a second rotating arm. The track is mounted on the bed, the carriage is slidably mounted on the track, the lifting drive is mounted on the bed and can drive the carriage to slide along a first direction, one end of the first rotating arm is hinged to the carriage and can rotate relative to the carriage around the first direction, and one end of the second rotating arm is hinged to the end of the first rotating arm away from the carriage and can rotate relative to the first rotating arm around the first direction. A temporary fixing mechanism is installed at the end of the second rotating arm away from the first rotating arm and is used to clamp the cutting tool.

2. The tool changing device for a vertical broaching machine as described in claim 1, characterized in that, The cutting tool includes a tool holder, an annular groove, and an inclined surface. The annular groove is formed on the side of the tool holder, and the inclined surface is formed at the end of the tool holder.

3. The tool changing device for a vertical broaching machine as described in claim 2, characterized in that, The temporary fixing mechanism includes two first bearing plates and a first U-shaped rod. The two first bearing plates are installed at the end of the second rotating arm away from the first rotating arm. The first U-shaped rod is installed between the two first bearing plates and can be engaged in the annular groove.

4. The tool changing device for a vertical broaching machine as described in claim 3, characterized in that, The first U-shaped rod includes two first straight rods, a first arc rod, and a groove. The two first straight rods are arranged in parallel and are respectively installed on the two first bearing plates. The first arc rod is connected between the two first straight rods, and the groove is formed in the first arc rod.

5. The tool changing device for a vertical broaching machine as described in claim 2, characterized in that, The transfer mechanism further includes a first pull rod and a second pull rod, wherein the first pull rod is installed on the first rotating arm and the second pull rod is installed on the second rotating arm.

6. The tool changing device for a vertical broaching machine as described in claim 2, characterized in that, The temporary fixing mechanism includes two second bearing plates, a second U-shaped rod, an adjusting component, and a fixing component. The two second bearing plates are each installed at the end of the second rotating arm away from the first rotating arm. The second U-shaped rod is installed between the two second bearing plates and can be engaged in the annular groove. The adjusting component is installed at the end of the second rotating arm away from the first rotating arm. The fixing component is installed on the adjusting component and can move along a second direction under the drive of the adjusting component. It is also configured to limit the tool bar by the inclined surface.

7. The tool changing device for a vertical broaching machine as described in claim 6, characterized in that, The second U-shaped rod includes two second straight rods and a second arc rod, with the second arc rod connecting the two second straight rods, and the included angle between the two second straight rods being an acute angle.

8. The tool changing device for a vertical broaching machine as described in claim 6, characterized in that, The fixing component includes a slider, a knob, a screw sleeve, a movable frame, multiple elastic connectors, a fixed cylinder, and a circular through hole. The slider is mounted on the adjusting component. The knob is rotatably mounted on the slider. The screw sleeve passes through the slider and the knob, and is engaged with the slider and screwed to the knob. The movable frame is mounted on one end of the screw sleeve near the second U-shaped rod. Multiple elastic connectors are mounted on the movable frame and symmetrically arranged at both ends of the movable frame along the second direction. The fixed cylinder is mounted between the multiple elastic connectors. The circular through hole is formed in the fixed cylinder.

9. The tool changing device for a vertical broaching machine as described in claim 8, characterized in that, The slider includes a block, two limiting bosses and two limiting arc grooves. The two limiting bosses are connected to the block, and the two limiting arc grooves are respectively opened on the two limiting bosses and are configured to correspond one-to-one with the two limiting bosses. The knob includes a cylindrical body and a convex ring. The cylindrical body is sleeved on the outer periphery of the threaded sleeve and screwed to the threaded sleeve. The convex ring is formed on the outer periphery of the cylindrical body and is located at one end of the cylindrical body near the block, and is engaged in the two limiting arc grooves.

10. The tool changing device for a vertical broaching machine as described in claim 8, characterized in that, The adjustment assembly includes a support frame, a guide rod, and a screw. The support frame is installed at the end of the second rotating arm away from the first rotating arm. The guide rod is installed on the support frame and passes through one end of the slider. The screw is rotatably installed on the support frame, passes through the other end of the slider, and is screwed to the slider.

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