A workpiece clamping module and clamping tooling

Abstract

The present invention provides a workpiece clamping module, including a frame, a clamping block, a pressure head and a floating mechanism; the clamping block is slidably arranged on a horizontal track of the frame, and is driven by a first driving member arranged on the frame to apply a clamping force in a horizontal direction to the workpiece; the pressure head is arranged at one end of the frame, and is driven by a second driving member arranged on the frame to apply a clamping force in a vertical direction to the workpiece; the floating mechanism is movably connected to the frame for placing the workpiece. The present invention also provides a workpiece clamping tool, including a plurality of clamping modules, a track system and a drag chain system; the track system is arranged on a machine tool, and a plurality of clamping modules are arranged at intervals and can move on the track; the drag chain system is arranged on the machine tool for protecting the cables of the driving member. The present invention is used in conjunction with a gantry machine tool for quickly positioning and clamping processing profiles. During processing, the clamping module can still be moved and positioned, thereby realizing the tool avoidance function.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical processing, and in particular to a workpiece clamping module and a clamping tool. Background Art

[0002] Currently, profiles are often positioned using traditional mechanical fixtures that are hoisted by overhead cranes and manually adjusted. Clamping is accomplished using manually adjusted screws. Profiles require numerous clamping points, at least 10. The wide variety of mechanical fixtures necessitates simultaneous tool changes when changing profile types. This results in high manual labor intensity and prolonged clamping times. Therefore, this automated profile clamping fixture was developed to meet market demand.

[0003] In summary, there is an urgent need for a workpiece clamping module and a clamping fixture to solve the problems existing in the prior art. Summary of the Invention

[0004] The present invention aims to provide a workpiece clamping module and a clamping fixture to solve the problem of difficulty in clamping the workpiece.

[0005] To achieve the above-mentioned object, the present invention provides a workpiece clamping module, comprising a frame, a clamping block, a pressing head, and a floating mechanism; the clamping block is slidably arranged on a horizontal track of the frame and is driven by a first driving member arranged on the frame to apply a horizontal clamping force to the workpiece; the pressing head is arranged at one end of the frame and is driven by a second driving member arranged on the frame to apply a vertical clamping force to the workpiece; the floating mechanism is movably connected to the frame for placing the workpiece;

[0006] The floating mechanism includes a positioning L-shaped seat, a cam and a camshaft; the positioning L-shaped seat includes a horizontal part and a vertical part; the ends of the horizontal part and the vertical part are both inclined surfaces, which are slidably connected to the frame through linear guide rails; the outer side surface of the connection between the horizontal part and the vertical part is an inclined surface, which cooperates with the cam; the cam is installed on the camshaft, and the camshaft is driven by a third driving member placed on the frame.

[0007] Furthermore, a guide rail groove is provided at the bottom of the rack, and a guide rail lock is provided on the guide rail groove.

[0008] Furthermore, a gear is installed on the end surface of the lower part of the frame; the gear is driven by a fourth driving member installed on the frame.

[0009] Furthermore, the first driving member is a rodless cylinder.

[0010] Furthermore, the second driving member and the third driving member are both rotary cylinders.

[0011] Furthermore, the fourth driving member is a reduction motor.

[0012] The present invention also provides a workpiece clamping tool, including the above-mentioned clamping module, and also including a rail system and a drag chain system; the rail system is arranged on the machine tool, including multiple base plates spliced ​​in sequence along the length direction; the base plate is provided with a rail matching the guide groove of the clamping module; the drag chain system is arranged on the machine tool to protect the cables of the driving parts.

[0013] Furthermore, the base plate is an L-shaped plate, including a horizontal plate and a vertical plate. The guide rail is installed on the horizontal plate, and a rack is installed on the vertical plate. The rack is arranged along the length direction of the L-shaped plate, and the rack is engaged with the gear.

[0014] The application of the technical solution of the present invention has the following beneficial effects:

[0015] (1) In the present invention, the floating mechanism drives the cam by rotating the third driving member to make the positioning L-shaped seat move in an oblique linear motion, thereby realizing position changes in both vertical and horizontal directions at the same time, and the positioning L-shaped seat can be separated from the profile; after separation, the clamping module can be moved on the track, and the clamping module close to the machine tool spindle can be moved away to avoid the tool.

[0016] (2) In the present invention, a gear is provided on the clamping module, and a rack is provided on the bottom plate of the track system. Through the gear and rack transmission, it can move on the slide rail in the track system under the drive of the motor, thereby meeting the requirements of different positions of the profile clamping points and realizing the function of multi-point positioning.

[0017] (3) In the present invention, the second driving member flips the pressing head 90 degrees to achieve vertical compression of the profile; the first driving member pushes the clamping block horizontally to achieve horizontal clamping of the profile. The first and second driving members can operate synchronously, saving time and effort.

[0018] (4) In the present invention, the positioning L-shaped seat in the clamping module is the positioning reference for profile processing; the positioning L-shaped seat can be used to place different positioning blocks, and the pressure head and the clamping block cooperate with the corresponding positioning blocks to adapt to the clamping requirements of different profiles. When changing the profile, only the corresponding positioning block needs to be replaced, which has strong compatibility and is convenient and fast.

[0019] In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 It is a schematic diagram of the clamping module structure;

[0022] Figure 2 It is a schematic diagram of the floating mechanism structure;

[0023] Figure 3 Schematic diagram of the clamping fixture structure;

[0024] Figure 4 It is a partial schematic diagram of the installation of the clamping fixture on the machine tool;

[0025] Among them, 1. Frame, 2. Clamp, 3. Press head, 4. Floating mechanism, 4.1. Positioning L-shaped seat, 4.2. Cam, 4.3. Camshaft, 4.4. Third drive member, 4.5. Linear guide, 5. First drive member, 6. Second drive member, 7. Guide rail groove, 8. Guide rail lock, 9. Gear, 10. Fourth drive member, 100. Clamping module, 200. Track system, 201. Rack, 300. Drag chain system, 400. Machine tool, 401. Machine tool spindle, 500. Profile. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered by the claims.

[0027] Example 1:

[0028] See also Figures 1 to 4 A workpiece clamping module 100 includes a frame 1, a clamping block 2, a pressing head 3 and a floating mechanism 4; the clamping block 2 is slidably arranged on the horizontal track of the frame 1, and is First driving member 5 Drive, apply horizontal clamping force to the workpiece; the pressure head 3 is provided at one end of the frame 1, and is driven by the second driving member 6 provided on the frame 1 to apply vertical clamping force to the workpiece; the floating mechanism 4 is movably connected to the frame 1 and is used to place the workpiece, and the workpiece in this embodiment is a profile 500;

[0029] The floating mechanism 4 includes a positioning L-shaped seat 4.1, a cam 4.2 and a camshaft 4.3; the positioning L-shaped seat 4.1 includes a horizontal portion and a vertical portion; the ends of the horizontal portion and the vertical portion are both inclined surfaces, which are slidably connected to the frame 1 through a linear guide 4.5; the outer side surface of the connection between the horizontal portion and the vertical portion is an inclined surface, which cooperates with the cam 4.2; the cam 4.2 is mounted on the camshaft 4.3, and the camshaft 4.3 is driven by a third driving member 4.4 placed on the frame 1.

[0030] A guide rail slot 7 is provided at the bottom of the frame 1 , and a guide rail lock 8 is provided on the guide rail slot 7 .

[0031] A gear 9 is installed on the end surface of the lower portion of the frame 1 ; the gear 9 is driven by a fourth driving member 10 installed on the frame 1 .

[0032] The first driving member 5 is a rodless cylinder. The second driving member 6 and the third driving member 4.4 are both rotary cylinders. The fourth driving member 10 is a reduction motor.

[0033] A clamping tool for a profile 500 includes multiple clamping modules 100, a track system 200 and a drag chain system 300; the track system 200 is arranged on a machine tool 400, and includes multiple base plates spliced ​​in sequence along the length direction; the base plates are provided with tracks that match the guide rail grooves 7 of the clamping modules 100; the drag chain system 300 is arranged on the machine tool 400, and the drag chain system 300 is a distribution device of the present invention, through which cables and air pipes are connected to each clamping module 100 to avoid being cut by processing debris.

[0034] The base plate is an L-shaped plate, including a horizontal plate and a vertical plate. The guide rail is installed on the horizontal plate, and a rack 201 is installed on the vertical plate. The rack 201 is arranged along the length direction of the L-shaped plate and meshes with the gear 9.

[0035] The clamping module 100 is provided with a guide rail groove 7 at the bottom, which allows it to run on the track of the base plate. The guide rail lock 8 and the brake configured by the servo motor ensure that the module can stably lock the track to prevent the clamping module from moving on the track during operation.

[0036] The positioning principle of the present invention is as follows: Figure 3 、 Figure 4 As shown, the clamping module is provided with a gear and the bottom plate of the track system is provided with a rack. Through the gear and rack transmission, it can move on the slide rail in the track system under the drive of the motor, thereby meeting the needs of different positions of the profile clamping points and realizing the function of multi-point positioning.

[0037] The clamping principle of the present invention is that the second driving member flips the pressing head 90 degrees to achieve vertical compression of the profile; the first driving member pushes the clamping block horizontally to achieve horizontal clamping of the profile. The first and second driving members can operate synchronously, saving time and effort.

[0038] The compatibility principle of the present invention: the positioning L-shaped seat in the clamping module is the positioning reference for profile processing; the positioning L-shaped seat can be placed with different positioning blocks, and the pressure head and clamping block cooperate with corresponding positioning blocks to adapt to the clamping requirements of different profiles. When changing the profile, only the corresponding positioning block needs to be replaced, which has strong compatibility and is convenient and fast.

[0039] The avoidance principle of the present invention is as follows: Figure 2 As shown, the floating mechanism drives the cam by the rotation of the third driving member, causing the positioning L-shaped seat to perform oblique linear motion, thereby achieving position changes in both vertical and horizontal directions, and the positioning L-shaped seat can be separated from the profile; after separation, the clamping module can be moved on the track, and the clamping module close to the machine tool spindle can be moved away to avoid the tool, and it is also convenient to remove the profile from the clamping module.

[0040] Specific Application: An automated clamping fixture designed for a HAGE gantry milling machine is suitable for machining urban rail vehicle body profiles. The fixture is 24 meters long and includes 12 clamping modules. The fixture is divided into three sections, each controlling four clamping modules. The maximum travel length of a single clamping module is 10 meters, with a maximum operating speed of 8 meters per minute. The clamping module positioning accuracy is 3 mm, and the positioning surface accuracy is ≤ 1 mm / 24 meters.

[0041] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A workpiece clamping module, characterized in that: It includes a frame, a clamping block, a pressing head and a floating mechanism; the clamping block is slidably arranged on a horizontal track of the frame and is driven by a first driving member arranged on the frame to apply a clamping force in a horizontal direction to the workpiece; The pressing head is arranged at one end of the frame and driven by a second driving member arranged on the frame to apply a clamping force in a vertical direction to the workpiece; the floating mechanism is movably connected to the frame and is used to place the workpiece; The floating mechanism includes a positioning L-shaped seat, a cam and a camshaft; the positioning L-shaped seat includes a horizontal part and a vertical part; the ends of the horizontal part and the vertical part are both inclined surfaces, which are slidably connected to the frame through a linear guide rail; the outer side surface of the connection between the horizontal part and the vertical part is an inclined surface, which cooperates with the cam; the cam is installed on the camshaft, and the camshaft is driven by a third driving member placed on the frame.

2. A workpiece clamping module according to claim 1, characterized in that: A guide rail groove is arranged at the bottom of the frame, and a guide rail lock is arranged on the guide rail groove.

3. A workpiece clamping module according to claim 2, characterized in that: A gear is installed on the end surface of the lower part of the frame; the gear is driven by a fourth driving member installed on the frame.

4. A workpiece clamping module according to claim 3, characterized in that: The first driving member is a rodless cylinder.

5. A workpiece clamping module according to claim 4, characterized in that: The second driving member and the third driving member are both rotary cylinders.

6. A workpiece clamping module according to claim 5, characterized in that: The fourth driving member is a reduction motor.

7. A workpiece clamping fixture, comprising a plurality of clamping modules according to any one of claims 1 to 6, characterized in that: It also includes a track system and a drag chain system; the track system is arranged on the machine tool, and includes a plurality of base plates spliced ​​in sequence along the length direction; the base plate is provided with a track matching the guide groove of the clamping module; the drag chain system is arranged on the machine tool, and is used to protect the cables of the drive components.

8. A workpiece clamping fixture according to claim 7, characterized in that: The bottom plate is an L-shaped plate, including a horizontal plate and a vertical plate. The guide rail is installed on the horizontal plate, and a rack is installed on the vertical plate. The rack is arranged along the length direction of the L-shaped plate, and the rack is meshed with the gear.

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