Pneumatic expansion device for vertical machining center

Abstract

The utility model discloses a pneumatic expansion device for a vertical machining center, which comprises a bottom frame, a movable frame is arranged above the bottom frame, and the movable frame is driven by a movable driving mechanism mounted on the bottom frame to move horizontally; an adjusting frame is rotationally mounted on the movable frame through a hinging piece; a pneumatic expansion device is installed on the adjusting frame and used for clamping a workpiece. A rotary driving mechanism is mounted on the movable frame and used for driving the adjusting frame to rotate; the utility model relates to the technical field of pneumatic expansion devices, in particular to a pneumatic expansion device for a vertical machining center, and solves the problems that the position and the angle of a fixture of an existing pneumatic expansion device are inconvenient to adjust after the fixture is mounted, and the fixture is inconvenient to adjust. The problems that in the prior art, workpieces with different shapes, specifications and angle directions cannot be stably clamped, the environment working condition adaptability is poor, workpiece clamping is not firm enough, and using is limited are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic expansion and tightening devices, in particular to a pneumatic expansion and tightening device for a vertical machining center. Background Art

[0002] Although the vertical machining center has a high degree of automation, due to the characteristics of the equipment itself, the commonly used fixtures are not highly automated. The main ones are three-jaw self-centering chucks and flat-nose pliers. When using them, first fix the flat-nose pliers on the workbench, align the jaws, and then clamp the workpiece on the flat-nose pliers. This method is convenient for clamping and widely used. It is suitable for clamping small workpieces with regular shapes. Whether it is a three-jaw self-centering chuck or a flat-nose pliers, the operator needs to manually clamp the workpiece. In addition, because the jaws are stressed at several points during operation, it is easy to cause deformation of the stress position of some thin-walled products after processing, resulting in quality problems such as elliptical inner holes.

[0003] Based on the above reasons, in order to expand the processing range, improve production efficiency, and reduce the labor intensity of operators manually clamping workpieces, patent CN201721557515.7 discloses a pneumatic expansion device that is efficient, high-precision, and can be quickly clamped, which solves the above problems well.

[0004] The following defects and shortcomings still exist in the specific implementation process: the position and angle of the fixture after installation are not easy to adjust, and it cannot adapt to the stable clamping of workpieces of different shapes, specifications, angles and directions. The adaptability to environmental conditions is poor, the workpiece clamping is not firm enough, and its use has limitations. For this reason, we propose a pneumatic expansion device for vertical machining centers. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a pneumatic expansion device for a vertical machining center, which solves the problems that the position and angle of the existing pneumatic expansion device fixture are difficult to adjust after installation, cannot adapt to the stable clamping of workpieces of different shapes, specifications, angles and directions, has poor adaptability to environmental conditions, the workpiece clamping is not firm enough, and has limitations in use.

[0006] To achieve the above purpose, the utility model is implemented through the following technical solutions: a pneumatic expansion device for a vertical machining center, comprising a base frame, a movable frame is arranged above the base frame, and the movable frame is driven to move horizontally by a mobile driving mechanism installed on the base frame;

[0007] An adjusting frame is rotatably mounted on the movable frame via a hinge;

[0008] The adjusting frame is provided with a pneumatic expansion device for clamping the workpiece;

[0009] The movable frame is provided with a rotation driving mechanism for driving the adjusting frame to rotate;

[0010] A bolt mounting plate is fixed on the base frame for being mounted on a vertical machining center through bolts.

[0011] Preferably, the pneumatic expansion device comprises a first clamp fixed on the adjustment frame, a first piston rod is installed at the output end of the first clamp, and a first cylinder is installed at one end of the first piston rod.

[0012] Preferably, the rotary drive mechanism comprises a second cylinder rotatably mounted on the movable frame via a bearing member, a second piston rod is mounted on the output end of the second cylinder, a connecting plate is rotatably mounted on one end of the second piston rod via a hinge, and the connecting plate is fixedly connected to the adjustment frame.

[0013] Preferably, the mobile driving mechanism includes two limit rods fixed on the base frame and a screw rod rotatably installed on the base frame through bearings. An adjustment block is fixed at the bottom of the movable frame. The adjustment block is threadedly connected to the screw rod. The adjustment block is slidably connected to the limit rods. The screw rod is driven to rotate by a driving mechanism installed on the base frame.

[0014] Preferably, the driving mechanism comprises a driven pulley fixed to one end of the screw rod, one side of the driven pulley is connected to a driving pulley via a transmission belt, the driving pulley is installed at the output end of the motor, and the motor is fixed on the chassis.

[0015] Preferably, a threaded hole and a limiting hole are provided on the adjusting block, the threaded hole is threadably connected to the screw rod, and the limiting hole is sleeved on the limiting rod.

[0016] Beneficial Effects

[0017] The utility model provides a pneumatic expansion device for a vertical machining center. Compared with the prior art, it has the following beneficial effects:

[0018] 1. The pneumatic expansion device for a vertical machining center can be set to be installed in multiple units on the vertical machining center at the same time. When clamping, the first clamp is started to drive the first piston rod to move, and the first cylinder is used to clamp and fix the workpiece from multiple directions. The first clamp is pneumatically expanded and loosened, and the expansion force is large. The workpiece is clamped firmly, which reduces the labor intensity of the operator manually clamping and loosening the workpiece.

[0019] 2. A pneumatic expansion device for a vertical machining center, the pneumatic expansion device is installed on an adjusting frame, the adjusting frame is rotatably installed on a movable frame, a rotary drive mechanism is arranged on the movable frame, the rotary drive mechanism includes a second cylinder, a second piston rod, etc., the second cylinder drives the second piston rod to extend and retract, which can drive the connecting plate to rotate and then drive the adjusting frame to rotate, so that the installation angle of the pneumatic expansion device can be adjusted, and at the same time, a mobile drive mechanism is installed on the base frame, the mobile drive mechanism includes a limit rod, a screw rod, etc., the mobile drive mechanism can drive the movable frame to move horizontally and then drive the pneumatic expansion device to move horizontally, so that the utility model can flexibly adjust the installation angle and position of the pneumatic expansion device, can be suitable for clamping and fixing of different specifications, shapes and angles, has strong adaptability to environmental conditions, and has good clamping and fixing effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model from the first viewing angle;

[0021] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model from a second viewing angle;

[0022] Figure 3 This is a schematic diagram of the structure of the regulating block of the utility model.

[0023] In the figure: 1. base frame; 2. movable frame; 3. adjusting frame; 4. pneumatic expansion device; 41. first cylinder; 42. first piston rod; 43. first clamp; 5. rotation drive mechanism; 51. second cylinder; 52. second piston rod; 53. connecting plate; 6. mobile drive mechanism; 61. limit rod; 62. screw rod; 63. adjusting block; 631. threaded hole; 632. limit hole; 64. drive mechanism; 641. driven pulley; 642. driving pulley; 643. transmission belt; 644. motor; 7. bolt mounting plate. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-3 , the utility model provides two technical solutions:

[0026] Embodiment 1:

[0027] A pneumatic expansion device for a vertical machining center comprises a base frame 1, a movable frame 2 is arranged above the base frame 1, and the movable frame 2 is driven to move horizontally by a moving drive mechanism 6 installed on the base frame 1;

[0028] An adjusting frame 3 is rotatably mounted on the movable frame 2 through a hinge;

[0029] A pneumatic expansion device 4 is installed on the adjustment frame 3 for clamping the workpiece;

[0030] The movable frame 2 is provided with a rotation driving mechanism 5 for driving the adjustment frame 3 to rotate;

[0031] A bolt mounting plate 7 is fixed on the base frame 1 for mounting on the vertical machining center by bolts.

[0032] Embodiment 2:

[0033] The main difference from the first embodiment is:

[0034] A pneumatic expansion device for a vertical machining center, the pneumatic expansion device 4 includes a first clamp 43 fixed on an adjustment frame 3, a first piston rod 42 is installed at the output end of the first clamp 43, and a first cylinder 41 is installed at one end of the first piston rod 42. The first clamp 43 is started to drive the first piston rod 42 to move, and the first cylinder 41 is used to clamp and fix the workpiece from multiple directions. The first clamp 43 is pneumatically expanded and released, and the expansion force is large, and the workpiece is firmly clamped; the rotation drive mechanism 5 includes a first clamp 43 that is rotatably installed on the movable frame 2 through a bearing member The second cylinder 51 has a second piston rod 52 installed at its output end, and a connecting plate 53 is rotatably installed at one end of the second piston rod 52 through a hinge. The connecting plate 53 is fixedly connected to the adjusting frame 3. The second cylinder 51 drives the second piston rod 52 to extend and retract, which can drive the connecting plate 53 to rotate and then drive the adjusting frame 3 to rotate, so that the installation angle of the pneumatic expansion device 4 can be adjusted. The mobile driving mechanism 6 includes two limit rods 61 fixed to the base frame 1 and a screw rod 62 rotatably installed on the base frame 1 through a bearing. An adjusting block 63 is fixed at the bottom of the movable frame 2, and the adjusting block 63 is threadedly connected to the screw rod 62. The adjusting block 63 is slidably connected to the limit rod 61. The screw rod 62 is driven to rotate by a driving mechanism 64 installed on the bottom frame 1. The screw rod 62 rotates and drives the adjusting block 63 to move horizontally by the threaded connection between the adjusting block 63 and the screw rod 62, thereby driving the movable frame 2 to move horizontally; the driving mechanism 64 includes a driven pulley 641 fixed to one end of the screw rod 62, and one side of the driven pulley 641 is connected to a driving pulley 642 through a transmission belt 643. The driving pulley 64 2 is installed at the output end of the motor 644, the motor 644 is fixed on the base frame 1, and the motor 644 is started to drive the active pulley 642 to rotate, drive the driven pulley 641 to rotate, and then drive the screw rod 62 to rotate; the adjusting block 63 is provided with a threaded hole 631 and a limiting hole 632, the threaded hole 631 is threadedly connected with the screw rod 62, the limiting hole 632 is sleeved on the limiting rod 61, and the threaded hole 631 is threadedly connected with the screw rod 62 to facilitate the movement of the adjusting block 63, and the limiting hole 632 is sleeved on the limiting rod 61 to limit the position of the adjusting block 63 when it moves.

[0035] When the pneumatic expansion device for a vertical machining center is used, it can be set to multiple, and then the base frame 1 is bolted to the vertical machining center through the bolt mounting plate 7. When the workpiece is clamped, the first piston rod 42 is driven to move by starting the first clamp 43 to clamp and fix the workpiece from multiple directions using the first cylinder 41. The first clamp 43 is pneumatically expanded and loosened, and the expansion force is large. The workpiece is firmly clamped, which reduces the labor intensity of the operator manually clamping and loosening the workpiece. In addition, the pneumatic expansion device 4 of the utility model is installed on the adjustment frame 3, and the adjustment frame 3 is rotatably installed on the movable frame 2. The movable frame 2 is provided with a rotation drive mechanism 5, and the rotation drive mechanism 5 includes a second The cylinder 51, the second piston rod 52, etc., can drive the second piston rod 52 to extend and retract through the second cylinder 51, which can drive the connecting plate 53 to rotate and then drive the adjusting frame 3 to rotate, so that the installation angle of the pneumatic expansion device 4 can be adjusted. At the same time, a mobile driving mechanism 6 is installed on the base frame 1. The mobile driving mechanism 6 includes a limit rod 61, a screw rod 62, etc. The mobile driving mechanism 6 can drive the movable frame 2 to move horizontally and then drive the pneumatic expansion device 4 to move horizontally. Therefore, the utility model can flexibly adjust the installation angle and position of the pneumatic expansion device 4, and can be suitable for clamping and fixing of different specifications, shapes and angles. It has strong adaptability to environmental conditions and good clamping and fixing effects.

[0036] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pneumatic expansion device for a vertical machining center, comprising a base frame (1), characterized in that: A movable frame (2) is arranged above the base frame (1), and the movable frame (2) is driven to move horizontally by a moving drive mechanism (6) installed on the base frame (1); An adjusting frame (3) is rotatably mounted on the movable frame (2) via a hinge; The adjusting frame (3) is provided with a pneumatic expansion device (4) for clamping the workpiece; The movable frame (2) is provided with a rotation driving mechanism (5) for driving the adjustment frame (3) to rotate; A bolt mounting plate (7) is fixed on the base frame (1) for mounting on a vertical machining center via bolts.

2. The pneumatic expansion device for a vertical machining center according to claim 1, characterized in that: The pneumatic expansion device (4) comprises a first clamp (43) fixed on the adjustment frame (3), a first piston rod (42) is installed at the output end of the first clamp (43), and a first cylinder (41) is installed at one end of the first piston rod (42).

3. The pneumatic expansion device for a vertical machining center according to claim 1, characterized in that: The rotary drive mechanism (5) comprises a second cylinder (51) rotatably mounted on the movable frame (2) via a bearing member, a second piston rod (52) being mounted on the output end of the second cylinder (51), a connecting plate (53) being rotatably mounted on one end of the second piston rod (52) via a hinge member, and the connecting plate (53) being fixedly connected to the adjustment frame (3).

4. The pneumatic expansion device for a vertical machining center according to claim 1, characterized in that: The mobile driving mechanism (6) comprises two limit rods (61) fixed on the base frame (1) and a screw rod (62) rotatably mounted on the base frame (1) via a bearing; an adjustment block (63) is fixed at the bottom of the movable frame (2); the adjustment block (63) is threadedly connected to the screw rod (62); the adjustment block (63) is slidably connected to the limit rods (61); and the screw rod (62) is driven to rotate by a driving mechanism (64) mounted on the base frame (1).

5. The pneumatic expansion device for a vertical machining center according to claim 4, characterized in that: The driving mechanism (64) comprises a driven pulley (641) fixed at one end of the screw rod (62); one side of the driven pulley (641) is connected to a driving pulley (642) via a transmission belt (643); the driving pulley (642) is mounted at the output end of a motor (644); and the motor (644) is fixed on a base frame (1).

6. The pneumatic expansion device for a vertical machining center according to claim 4, characterized in that: The adjusting block (63) is provided with a threaded hole (631) and a limiting hole (632); the threaded hole (631) is threadedly connected to the screw rod (62); and the limiting hole (632) is sleeved on the limiting rod (61).

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