Multidirectional locking type tool clamp for numerical control machining center

Abstract

The invention discloses a multidirectional locking type tool clamp for a numerical control machining center, which comprises a cabinet, the cabinet comprises a platform plate, clamp assemblies are arranged on the platform plate, each clamp assembly comprises two groups of linear motors, one group of linear screw rod modules, one group of rotating cylinders and one group of clamp carrying tables, the two groups of linear motors are arranged in parallel, and the two groups of linear screw rod modules are arranged in parallel; the linear motor comprises a first movable carrying table, bearing assemblies are arranged on the first movable carrying table, a limiting rail is arranged on the lower surface of the linear lead screw module, the limiting rail is in limiting sliding connection with one bearing assembly, the linear lead screw module comprises a second movable carrying table, and a rotating air cylinder is fixedly installed on the second movable carrying table. The rotating cylinder is in driving connection with the clamp carrier which is provided with the clamp body. The linear lead screw module is driven by the two sets of linear motors, linkage control of the rotating air cylinder is combined, multi-dimensional accurate positioning of the clamp body in the horizontal direction, the vertical direction and the rotating direction is achieved, and adaptability to special-shaped workpieces is remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tooling fixture, in particular to a multi-direction locking tooling fixture for numerical control machining center. BACKGROUND

[0002] In the field of numerical control machining, the positioning accuracy, flexibility and stability of tooling fixture directly affect the machining efficiency and workpiece quality. Traditional fixtures mostly adopt one-way mechanical locking structure, which has the problems of low adjustment freedom and poor adaptability, and is difficult to meet the needs of special-shaped workpieces or multi-angle machining. Some existing technologies try to increase driving modules or rotating mechanisms to improve flexibility, but generally have problems such as complex structure, poor positioning repeatability, and cable interference.

[0003] Therefore, we propose a multi-direction locking tooling fixture for numerical control machining center to solve the problems mentioned above. SUMMARY

[0004] The purpose of the present application is to provide a multi-direction locking tooling fixture for numerical control machining center to solve the problems mentioned in the background.

[0005] To achieve the above purpose, the present application provides the following technical solution: a multi-direction locking tooling fixture for numerical control machining center, comprising: a cabinet containing a platform plate, the platform plate is provided with a fixture assembly; The fixture assembly contains at least two groups, each group of fixture assembly contains two groups of linear motors, one group of linear guide rod module, one group of rotary air cylinder and one group of fixture carrier; Two groups of linear motors are arranged in parallel, the linear motor contains a first moving carrier, the first moving carrier is provided with a bearing assembly, the linear guide rod module is movably connected with two first moving carriers through two bearing assemblies, and the lower surface of the linear guide rod module is provided with a limiting rail which is limitingly and slidably connected with one of the bearing assemblies; The linear guide rod module contains a second moving carrier, the second moving carrier is fixedly installed with a rotary air cylinder, the rotary air cylinder is drivingly connected with a fixture carrier, the fixture carrier is installed with a fixture body, and the fixture body contains two kinds of fixtures.

[0006] Preferably, a through hole is arranged on the platform plate, a rotary lifting platform is arranged in the through hole, a numerical control mechanism is installed at the edge of the platform plate, an electrical assembly is arranged in the cabinet, and the numerical control mechanism controls the electrical assembly to control the fixture assembly.

[0007] Preferably, the fixture assembly is provided with four groups, and the four groups of fixture assemblies are distributed in a square or rhombus shape.

[0008] Preferably, the fixture assembly is provided with three groups, and the three groups of fixture assemblies are distributed in a triangle shape.

[0009] Preferably, the bearing assembly upper surface is provided with several balls, and the balls are in rolling connection with the linear guide rail module lower surface.

[0010] Preferably, the rotary cylinder is designed with a rotary output end, the rotary output end is fixedly connected with a clamp table, a butt joint is mounted on the clamp table lower surface, and the butt joint is fixedly connected with the rotary output end of the rotary cylinder.

[0011] Preferably, the clamp table lower surface is provided with two sliding conductive terminals, the rotary cylinder upper surface is fixedly mounted with an annular conductive sliding rail, two sliding grooves are formed in the annular conductive sliding rail, an annular conductive sheet is arranged in the sliding groove, and the sliding conductive terminals are inserted into the annular conductive sliding rail and are in sliding conductive connection with the annular conductive sheet.

[0012] Preferably, the clamp table upper surface is fixedly provided with two magnetic plates, the clamp main body comprises a clamp support plate, two iron sheets are correspondingly arranged on the clamp support plate lower surface, the magnetic plates and the iron sheets are magnetically connected, two conductive limiting insertion holes are formed in the clamp table upper surface, two conductive plugs are correspondingly arranged on the clamp support plate lower surface, the conductive plugs are inserted into the conductive limiting insertion holes, and the conductive limiting insertion holes are in conductive connection with the sliding conductive terminals.

[0013] Preferably, a servo motor is fixedly mounted on the clamp support plate upper surface, the servo motor is drivingly connected with a lead screw, a sliding block is threadedly sleeved on the lead screw, the sliding block is slidingly connected with two cylindrical sliding rails, a first connecting rod is fixedly mounted on the sliding block, and a first pressing head is fixedly mounted on the front end of the first connecting rod.

[0014] Preferably, the sliding block is fixedly connected with two second connecting rods, the second connecting rods are oppositely arranged relative to the first connecting rod, the two second connecting rods are fixedly connected with a limiting connecting rod at the front ends, a rotating support is rotatably connected to one end of the clamp support plate close to the limiting connecting rod, a limiting strip-shaped hole is formed in the side surface of the rotating support, the limiting connecting rod is slidingly connected with the limiting strip-shaped hole at both ends, a third connecting rod is fixedly mounted on the upper end of the rotating support, and a second pressing head is fixedly mounted on the front end of the third connecting rod.

[0015] Compared with the prior art, the present application has the following advantages: 1. Multi-degree-of-freedom cooperative regulation: through the driving of the two groups of linear motors on the linear guide rail module and the linkage control of the rotary cylinder, multi-dimensional accurate positioning of the clamp main body in the horizontal, vertical and rotary directions is realized, and the adaptability to special-shaped workpieces is significantly improved; 2. High stability and precision: the cooperation design of the limiting track and the ball bearing assembly ensures the movement stability of the linear guide rail module during angle transformation; the double fixing mechanism of the conductive limiting insertion hole and the magnetic plate enhances the connection strength of the clamp main body and the table, and avoids the deviation caused by machining vibration; 3. Quick switching and automation: The magnetic plate and iron sheet are adsorbed and matched with the plug-in structure of the conductive plug, supporting one-key quick replacement of the clamp body; the rotary cylinder drives the clamp support to overturn by 180°, which can seamlessly switch between the two clamping modes, reducing downtime; 4. Low interference and high reliability: The design of the annular conductive sliding rail and the sliding conductive terminal replaces the traditional open line connection and avoids cable winding; multiple clamps are distributed in a square or diamond shape, which can cooperate with force to realize all-around locking of the workpiece and avoid local stress concentration; 5. Strong expansibility: The number (three or four) and distribution of the clamp assemblies can be flexibly configured according to the processing requirements, which is suitable for workpieces of different sizes and shapes and has high compatibility. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present application; Figure 2 It is a side view of the platform plate in the present application; Figure 3 It is a structural schematic diagram of the clamp assembly in the present application; Figure 4 It is an enlarged view of A in the present application; Figure 3 Figure 5 It is a side view of the bearing assembly and linear guide module in the present application; Figure 6 It is a structural schematic diagram of the clamp assembly after angle adjustment in the present application; Figure 7 It is an enlarged view of B in the present application; Figure 6 Figure 8 It is a structural schematic diagram of the clamp body in the present application; Figure 9 It is a disassembly schematic diagram of the clamp support and the clamp support plate in the present application; Figure 10 It is a side view of the annular conductive sliding rail in the present application.

[0017] ​​In the figure: 1, cabinet; 11, platform plate; 12, through hole; 2, numerical control mechanism; 3, rotating lifting platform; 4, clamp assembly; 41, linear motor; 411, first moving carrier; 412, bearing assembly; 4121, ball; 42, linear lead screw module; 422, second moving carrier; 421, limiting rail; 43, rotating cylinder; 431, rotating output end; 45, clamp main body; 451, clamp support plate; 4511, iron sheet; 4512, conductive plug; 452, servo motor; 453, lead screw; 454, sliding block; 455, first connecting rod; 4551, first pressing head; 456, limiting connecting rod; 457, second connecting rod; 458, rotating support; 4581, limiting strip-shaped hole; 459, third connecting rod; 4591, second pressing head; 46, clamp carrier; 461, butt joint; 462, conductive limiting jack; 463, magnetic attraction plate; 464, sliding conductive terminal; 465, annular conductive sliding rail; 466, annular conductive sheet. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0019] Please refer to Figures 1-10 The present application provides a technical solution: a multi-direction locking tool clamp for a numerical control machining center, comprising: a cabinet 1, the cabinet 1 contains a platform plate 11, the platform plate 11 is provided with a through hole 12, a rotating lifting platform 3 is arranged in the through hole 12, for carrying products and performing lifting and angle rotation of the products, a numerical control mechanism 2 is installed at the edge of the platform plate 11, an electrical assembly is arranged in the cabinet 1, a clamp assembly 4 is arranged on the platform plate 11, and the numerical control mechanism 2 controls the electrical assembly and in turn controls the clamp assembly 4.

[0020] The clamp assembly 4 contains at least two groups, in this embodiment, four groups of clamp assemblies 4 are arranged, which are distributed in a square or rhombus shape according to requirements.

[0021] Each group of clamp assemblies 4 contains two groups of linear motors 41, one group of linear lead screw modules 42, one group of rotating cylinders 43, and one group of clamp carriers 46. Two groups of linear motors 41 are arranged in parallel, the linear motor 41 comprises a first moving platform 411, the linear motor 41 drives the first moving platform 411 to move linearly, a bearing assembly 412 is arranged on the first moving platform 411, the linear lead screw module 42 is movably connected with the two groups of first moving platforms 411 through the two bearing assemblies 412 respectively, the linear lead screw module 42 changes the angle through the movement of the two first moving platforms 411, a limiting rail 421 is arranged on the lower surface of the linear lead screw module 42, the limiting rail 421 is limitingly and slidably connected with one of the bearing assemblies 412, a plurality of balls 4121 are arranged on the upper surface of the bearing assembly 412, the balls 4121 are rollingly connected with the lower surface of the linear lead screw module 42, and the cooperation of the limiting rail 421 and the bearing assembly 412 makes the linear lead screw module 42 more stable and accurate when changing the angle.

[0022] The linear lead screw module 42 comprises a second moving platform 422, the linear lead screw module 42 drives the second moving platform 422 to move linearly, a rotary air cylinder 43 is fixedly installed on the second moving platform 422, the rotary air cylinder 43 is designed with a rotary output end 431, the rotary output end 431 is fixedly connected with a clamp carrier 46, and the clamp carrier 46 is installed with a clamp main body 45; The angle adjustment of the linear lead screw module 42 enables the clamp main body 45 to face different directions, and the further adjustment of the direction of the clamp main body 45 is realized through the rotary air cylinder 43, two kinds of clamps are arranged on the clamp main body 45, the rotary air cylinder 43 can also drive the clamp main body 45 to rotate by 180°, so that the two kinds of clamps are switched.

[0023] The lower surface of the clamp carrier 46 is installed with a butt joint 461, the butt joint 461 is fixedly connected with the rotary output end 431 of the rotary air cylinder 43, so that the rotary air cylinder 43 drives the rotation of the clamp carrier 46.

[0024] The lower surface of the clamp carrier 46 is provided with two sliding conductive terminals 464, the upper surface of the rotary air cylinder 43 is fixedly installed with an annular conductive sliding rail 465, two sliding grooves are formed in the annular conductive sliding rail 465, an annular conductive sheet 466 is arranged in the sliding grooves, the sliding conductive terminals 464 are inserted into the annular conductive sliding rail 465 and are slidably and conductively connected with the annular conductive sheet 466, so that the clamp carrier 46 maintains the conductive state during the rotation process and reduces the use of exposed wires.

[0025] Two magnetic attraction plates 463 are fixedly arranged on the upper surface of the clamp carrier 46, the clamp main body 45 comprises a clamp support plate 451, two iron sheets 4511 are correspondingly arranged on the lower surface of the clamp support plate 451, the magnetic attraction plates 463 and the iron sheets 4511 are magnetically attracted and connected, and when the clamp support plate 451 and the clamp carrier 46 are assembled, the magnetic attraction plates 463 and the iron sheets 4511 are magnetically attracted and connected.

[0026] The upper surface of the clamp base 46 is also provided with two conductive limiting sockets 462, and the lower surface of the clamp support plate 451 is correspondingly provided with two conductive plugs 4512, the conductive plugs 4512 are inserted into the conductive limiting sockets 462, so that the clamp support plate 451 and the clamp base 46 are fixed in position after being assembled, and the magnetic attraction plate 463 and the iron sheet 4511 are magnetically connected, so that the clamp support plate 451 and the clamp base 46 are quickly assembled, and different clamp bodies 45 can be replaced conveniently.

[0027] The conductive limiting socket 462 is in conductive connection with the sliding conductive terminal 464, so as to realize the functions of limiting and fixing and conductive connection between the clamp body 45 and the clamp base 46.

[0028] The upper surface of the clamp support plate 451 is fixedly provided with a servo motor 452, the servo motor 452 is drivingly connected with a lead screw 453, the lead screw 453 is threadedly sleeved with a sliding block 454, the sliding block 454 is slidingly connected with two cylindrical sliding rails, the lead screw 453 is driven to rotate by the servo motor 452, so that the sliding block 454 moves linearly along the cylindrical sliding rails, the sliding block 454 is fixedly provided with a first connecting rod 455, the front end of the first connecting rod 455 is fixedly provided with a first pressing head 4551, when the sliding block 454 moves linearly, the first connecting rod 455 is pushed out linearly, so that the first pressing head 4551 presses against the side surface of the product, and through cooperation of a plurality of clamp assemblies 4, the product is fixed in multiple directions.

[0029] The sliding block 454 is fixedly connected with two second connecting rods 457, the second connecting rods 457 are oppositely arranged relative to the first connecting rod 455, the front ends of the two second connecting rods 457 are fixedly connected with a limiting connecting rod 456, one end of the clamp support plate 451 close to the limiting connecting rod 456 is rotatably connected with a rotating support 458, the side surface of the rotating support 458 is provided with a limiting slot 4581, the two ends of the limiting connecting rod 456 are slidingly connected with the limiting slot 4581, the upper end of the rotating support 458 is fixedly provided with a third connecting rod 459, the front end of the third connecting rod 459 is fixedly provided with a second pressing head 4591, when the sliding block 454 moves, the second connecting rods 457 are pushed out, the second connecting rods 457 drive the rotating support 458 to rotate through the limiting connecting rod 456, so that the third connecting rod 459 drives the second pressing head 4591 to rotate downward and press against the product, through the action of a plurality of clamp assemblies 4, the plurality of second pressing heads 4591 press against the product downward, and the positioning of the product is completed.

[0030] Working principle: the two linear motors 41 of each group of clamp assemblies 4 are driven, so that the linear lead screw module 42 drives the clamp body 45 to move toward a specified angle, a plurality of clamp bodies 45 are independently adjusted, and different shapes of products, especially special-shaped products, are adapted; The clamp body 45 is driven to move close to the product by the linear lead screw module 42, the clamp body 45 is driven to rotate by the rotating air cylinder 43, the angle of the clamp body 45 is further adjusted, and the adaptability is met; The clamp body 45 controls two kinds of clamps through a single screw rod assembly, and is switched through the rotation cylinder 43 driving, meets the downward pressing, top pressing multidirectional cooperation locking clamping product, makes the clamping of product more stable, and the application range is wider.

[0031] The contents not described in detail in the specification belong to the prior art known to the person skilled in the art.

[0032] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A multi-directional locking tooling fixture for a CNC machining center, comprising: A cabinet (1) includes a platform plate (11) on which a clamping assembly (4) is provided. The feature is that the clamp assembly (4) comprises at least two sets, and each clamp assembly (4) comprises two sets of linear motors (41), one set of linear lead screw modules (42), one set of rotary cylinders (43), and one set of clamp platform (46); Two sets of linear motors (41) are arranged in parallel. Each linear motor (41) includes a first movable platform (411). A bearing assembly (412) is provided on the first movable platform (411). The linear screw module (42) is movably connected to the two sets of first movable platforms (411) through two bearing assemblies (412). A limit track (421) is provided on the lower surface of the linear screw module (42). The limit track (421) is limited and slidably connected to one of the bearing assemblies (412). The linear screw module (42) includes a second movable platform (422), on which a rotary cylinder (43) is fixedly installed. The rotary cylinder (43) drives a connected clamp platform (46), on which a clamp body (45) is installed. The clamp body (45) includes two types of clamps.

2. A multi-directional locking fixture for a CNC machining center as claimed in claim 1, wherein, The platform plate (11) is provided with a through hole (12), and a rotating lifting platform (3) is provided in the through hole (12). A CNC mechanism (2) is installed at the edge of the platform plate (11). An electrical component is provided in the cabinet (1). The CNC mechanism (2) controls the fixture component (4) by controlling the electrical component.

3. A multi-directional locking fixture for use in a CNC machining center as claimed in claim 1, wherein, The clamping assembly (4) is provided in four groups, and the four groups of clamping assemblies (4) are distributed in a square or rhombus shape.

4. A multi-directional locking fixture for a CNC machining center according to claim 1, characterized in that, The clamping assembly (4) may be provided in three sets, with the three sets of clamping assemblies (4) arranged in an equilateral triangle.

5. A multi-directional locking fixture for a CNC machining center according to claim 1, characterized in that, The upper surface of the bearing assembly (412) is provided with a plurality of balls (4121), which are in rolling connection with the lower surface of the linear screw module (42).

6. A multi-directional locking fixture for a CNC machining center according to claim 1, characterized in that, The rotary cylinder (43) is designed with a rotary output end (431), which is fixedly connected to the fixture platform (46). A connector (461) is installed on the lower surface of the fixture platform (46), and the connector (461) is fixedly connected to the rotary output end (431) of the rotary cylinder (43).

7. A multi-directional locking fixture for a CNC machining center according to claim 6, characterized in that, Two sliding conductive terminals (464) are provided on the lower surface of the fixture platform (46), and an annular conductive slide rail (465) is fixedly installed on the upper surface of the rotary cylinder (43). The annular conductive slide rail (465) has two grooves, and an annular conductive sheet (466) is provided in the groove. The sliding conductive terminal (464) is inserted into the annular conductive slide rail (465) and is slidably conductively connected with the annular conductive sheet (466).

8. A multi-directional locking fixture for a CNC machining center according to claim 7, characterized in that, Two magnetic plates (463) are fixedly installed on the upper surface of the fixture platform (46). The fixture body (45) includes a fixture support plate (451). Two iron plates (4511) are correspondingly installed on the lower surface of the fixture support plate (451). The magnetic plates (463) and the iron plates (4511) are magnetically connected. Two conductive limit sockets (462) are also opened on the upper surface of the fixture platform (46). Two conductive plugs (4512) are correspondingly installed on the lower surface of the fixture support plate (451). The conductive plugs (4512) are inserted into the conductive limit sockets (462). The conductive limit sockets (462) are conductively connected to the sliding conductive terminal (464).

9. A multi-directional locking fixture for a CNC machining center according to claim 8, characterized in that, A servo motor (452) is fixedly installed on the upper surface of the clamp support plate (451). The servo motor (452) drives the connecting screw (453). A slider (454) is threaded on the screw (453). The slider (454) is slidably connected to two cylindrical slide rails. A first connecting rod (455) is fixedly installed on the slider (454). A first pressure head (4551) is fixedly installed at the front end of the first connecting rod (455).

10. A multi-directional locking fixture for a CNC machining center according to claim 9, characterized in that, The slider (454) is fixedly connected to two second connecting rods (457). The second connecting rods (457) are set opposite to the first connecting rod (455). The front ends of the two second connecting rods (457) are fixedly connected to the limiting connecting rods (456). The end of the clamp support plate (451) near the limiting connecting rods (456) is rotatably connected to the rotating bracket (458). The rotating bracket (458) has a limiting strip hole (4581) on its side. The two ends of the limiting connecting rod (456) are slidably connected to the limiting strip hole (4581). The upper end of the rotating bracket (458) is fixedly installed with a third connecting rod (459). The front end of the third connecting rod (459) is fixedly installed with a second pressure head (4591).

Images