Mould milling machine machining clamping device

Abstract

The utility model discloses a mold milling machine machining clamping device, which relates to the technical field of clamps and comprises a base, a fixing mechanism and a pressing mechanism. The fixing mechanism comprises a fixing seat, a movable driving piece and a plug pin, the movable driving piece and the fixing seat are arranged on the base, and the plug pin is arranged on the fixing seat in a sliding mode; the pressing mechanism comprises a pressing seat, a pressing plate, an eccentric wheel and a rotary driving part, the pressing seat and the rotary driving part are both arranged on the base, the eccentric wheel is rotatably arranged on the pressing seat, and an output shaft of the rotary driving part and one end of the pressing plate are both connected to the eccentric wheel; according to the clamping device, the clamping effect can be guaranteed, the rigidity of the workpiece can be prevented from being affected, and the columnar workpiece can be well clamped.

Description

Technical Field

[0001] This utility model relates to the field of clamping technology, specifically a clamping device for mold milling machine processing. Background Technology

[0002] A milling machine is a machine tool that uses a milling cutter to mill workpieces. During the machining process, in order to prevent the workpiece from shifting and affecting the machining quality, a clamping device is needed to clamp and position the workpiece.

[0003] Existing clamping devices for mold milling machines typically use a set of clamping plates with opposing forces, either vertically or horizontally, to clamp the workpiece. While a set of opposing clamping plates can clamp the workpiece, the opposing forces mean that if the clamping force is not properly controlled, the workpiece may break, thus affecting its rigidity. Furthermore, a set of opposing clamping plates is generally suitable for square-shaped workpieces, but it is prone to slippage when clamping cylindrical workpieces.

[0004] For example, a milling machine clamping device disclosed in CN212071168U includes a base and an extrusion block. A mounting platform corresponding to the extrusion block is fixedly connected to the top of the base. Multiple sliding rods are fixedly connected to the top of the base, with the tops of the sliding rods penetrating the extrusion block and extending upwards. The extrusion block has sliding openings corresponding to the sliding rods. A fixing block is fixedly connected to one end of the base, and a screw is threaded into the fixing block. A knob is fixedly connected to the bottom of the screw. Its working principle is as follows: the workpiece is first placed on the mounting platform, and then the knob is rotated to drive the screw to rotate, thereby moving the extrusion block downwards to clamp the workpiece between the mounting platform and the extrusion block. This clamping device uses an up-and-down clamping method to clamp the workpiece, which is not effective for clamping cylindrical workpieces. Furthermore, under gravity, the clamping force is easily difficult to control in this method. Utility Model Content

[0005] To solve the above-mentioned technical problems, the present invention proposes the following optimized technical solution:

[0006] A clamping device for milling molds includes a base, a fixing mechanism, and a clamping mechanism. The base has a machining table on which a workpiece is placed. The fixing mechanism includes a fixed seat, a moving drive, and a pin. The moving drive and the fixed seat are both mounted on the base. The pin is slidably mounted on the fixed seat. The moving drive drives the pin to insert into the workpiece from the side. The clamping mechanism includes a clamping seat, a clamping plate, an eccentric wheel, and a rotating drive. The clamping seat and the rotating drive are both mounted on the base. The eccentric wheel is rotatably mounted on the clamping seat. The output shaft of the rotating drive and one end of the clamping plate are both connected to the eccentric wheel. The rotating drive drives the eccentric wheel to rotate, causing the other end of the clamping plate to move and clamp the workpiece.

[0007] Furthermore, the base is also provided with a positioning seat, which is used to hold one end of the workpiece.

[0008] Furthermore, the positioning seat is provided with a movable positioning pin, which is used to hold one end of the workpiece.

[0009] Furthermore, the top surface of the base is provided with a positioning groove.

[0010] Furthermore, the fixing seat is provided with a sleeve for the pin to be fitted inside.

[0011] Furthermore, the sleeve is positioned at an angle downwards.

[0012] Furthermore, the pin is provided with a guide strip, and the sleeve sidewall is provided with a guide groove. When the pin is inserted into the sleeve, the guide strip is located in the guide groove.

[0013] Furthermore, the eccentric wheel is provided with two first through holes, the output shaft of the rotary drive is connected to a first connecting shaft, and the clamping plate is provided with a second connecting shaft. The first connecting shaft and the second connecting shaft are respectively inserted into the two first through holes.

[0014] Furthermore, a guide sleeve is fitted onto the clamping plate, and the guide sleeve has a second through hole; the clamping mechanism also includes a guide post and a spring, the spring is fitted onto the guide post, the guide post passes through the second through hole and is inserted into the base, the spring is located below the guide sleeve, and the guide post is located between the processing table and the clamping seat.

[0015] Furthermore, the guide post is a bolt.

[0016] The present invention has the following advantages over the prior art:

[0017] This utility model discloses a clamping device for mold milling machine processing, comprising a base, a fixing mechanism, and a clamping mechanism. The workpiece is placed on the processing table of the base. The moving drive component of the fixing mechanism drives the pin to move and insert it into the hole of the workpiece from the side, thus fixing the workpiece from the side. The rotating drive component in the clamping mechanism drives the end of the clamping plate to make an arc motion through the eccentric wheel, thereby clamping the workpiece downward. This utility model adopts a side fixing method and an arc motion downward clamping method. The direction of the fixing force will not affect the rigidity of the workpiece, and the arc downward clamping also prevents the workpiece from being directly pressed downward. The force direction of the clamping plate is obliquely downward, which can ensure the clamping effect and avoid affecting the rigidity of the workpiece. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a structural schematic diagram of the fixing mechanism of this utility model.

[0020] Figure 3 This is a schematic diagram of the pressing mechanism of this utility model. Figure 1 .

[0021] Figure 4 This is a schematic diagram of the pressing mechanism of this utility model. Figure 2 .

[0022] In the diagram: 1. Base; 11. Machining table; 12. Positioning seat; 13. Positioning pin; 14. Positioning groove; 2. Fixing mechanism; 21. Fixing seat; 22. Moving drive component; 23. Pin; 231. Guide bar; 24. Sleeve; 241. Guide groove; 3. Pressing mechanism; 31. Pressing seat; 32. Pressing plate; 321. Second connecting shaft; 33. Eccentric wheel; 331. First through hole; 34. Rotation drive component; 341. First connecting shaft; 35. Guide post; 36. Spring; 37. Guide sleeve; 4. Workpiece. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0024] See Figures 1-4A clamping device for milling molds includes a base 1, a fixing mechanism 2, and a clamping mechanism 3. The base 1 has a machining table 11 on which a workpiece 4 is placed. The fixing mechanism 2 includes a fixed seat 21, a moving drive component 22, and a pin 23. The moving drive component 22 and the fixed seat 21 are both mounted on the base 1. The pin 23 is slidably mounted on the fixed seat 21. The moving drive component 22 drives the pin 23 to insert into the workpiece from the side. 4. The clamping mechanism 3 includes a clamping seat 31, a clamping plate 32, an eccentric wheel 33, and a rotary drive 34. The clamping seat 31 and the rotary drive 34 are both mounted on the base 1. The eccentric wheel 33 is rotatably mounted on the clamping seat 31. The output shaft of the rotary drive 34 and one end of the clamping plate 32 are both connected to the eccentric wheel 33. The rotary drive 34 drives the eccentric wheel 33 to rotate, causing the other end of the clamping plate 32 to move and clamp the workpiece 4.

[0025] In use, place the workpiece 4 on the processing table 11, align the hole on the workpiece 4 with the pin 23, start the moving drive 22, the moving drive 22 pushes the pin 23 to move and insert it into the hole of the workpiece 4, start the rotating drive 34 again, the rotating drive 34 drives the eccentric wheel 33 to rotate, the eccentric wheel 33 drives the pressure plate 32 to make an arc motion, and the other end of the pressure plate 32 presses the workpiece 4 downward, thereby achieving the function of fixing and pressing the workpiece 4.

[0026] Additionally, the moving drive component 22 is a cylinder; the rotating drive component 34 is a motor.

[0027] In this embodiment, the base 1 is further provided with a positioning seat 12, which is used to hold one end of the workpiece 4 against the workpiece 4. When the workpiece 4 is placed on the processing table 11, the end of the workpiece 4 abuts against the positioning seat 12, and the positioning seat 12 plays the role of lateral positioning of the workpiece 4.

[0028] In this embodiment, the positioning seat 12 is provided with a movable positioning pin 13, which is used to abut one end of the workpiece 4. The position of the positioning seat 12 can be manually adjusted to adapt to the placement position of the workpiece 4. Specifically, the positioning pin 13 is a bolt. The length of the positioning pin 13 can be adjusted by manually turning the positioning pin 13 into the positioning seat 12.

[0029] In this embodiment, the top surface of the base 1 is provided with a positioning groove 14, specifically for placing the workpiece 4 in the positioning groove 14.

[0030] In this embodiment, the fixing base 21 is provided with a sleeve 24, which is used for the pin 23 to be fitted inside it, that is, the pin 23 is detachably installed inside the sleeve 24, which facilitates disassembly and assembly.

[0031] In this embodiment, the sleeve 24 is arranged at an angle downward, which can fix the workpiece 4 downward and avoid pressing the workpiece 4 downward.

[0032] In this embodiment, the pin 23 is provided with a guide strip 231, and the sleeve 24 has a guide groove 241 on its side wall. When the pin 23 is inserted into the sleeve 24, the guide strip 231 is located in the guide groove 241. When the moving drive member 22 pushes the pin 23 to move, the guide strip 231 moves in the guide groove 241, and the guide groove 241 guides the movement direction of the pin 23.

[0033] In this embodiment, the eccentric wheel 33 is provided with two first through holes 331, the output shaft of the rotary drive 34 is connected to a first connecting shaft 341, and the pressure plate 32 is provided with a second connecting shaft 321. The first connecting shaft 341 and the second connecting shaft 321 are respectively inserted into the two first through holes 331, thereby realizing the connection between the rotary drive 34 and the eccentric wheel 33, and the connection between the pressure plate 32 and the eccentric wheel 33. Specifically, neither of the two second through holes is located at the center of the eccentric wheel 33.

[0034] In this embodiment, a guide sleeve 37 is fitted onto the clamping plate 32, and the guide sleeve 37 has a second through hole. The clamping mechanism 3 also includes a guide post 35 and a spring 36. The spring 36 is fitted onto the guide post 35, the guide post 35 passes through the second through hole and is inserted into the base 1, the spring 36 is located below the guide sleeve 37, and the guide post 35 is located between the processing table 11 and the clamping seat 31. When the clamping plate 32 makes an arc motion, the guide sleeve 37 presses the spring 36 downward along the guide post 35. The guide post 35 has a guiding effect on the clamping plate 32. When the workpiece 4 is completed, the spring 36 has a rebound effect on the clamping plate 32, which facilitates the reset of the clamping plate 32.

[0035] In this embodiment, the guide post 35 is a bolt. Manually turning the guide post 35 allows for easy removal of the guide post 35 and the spring 36.

[0036] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A mold-milling machine processing clamping device, characterized by, The utility model provides a workpiece pressing device, including base, fixed mechanism and compression mechanism, the base is equipped with processing table, the processing table is used for workpiece to be placed on it, the fixed mechanism includes fixed seat, mobile drive piece and bolt, mobile drive piece and fixed seat all set up on the base, bolt is slidably arranged on the fixed seat, mobile drive piece is used for driving bolt to insert into workpiece from side, compression mechanism includes compression seat, compression board, eccentric wheel and rotary drive piece, compression seat and rotary drive piece all set up on the base, eccentric wheel is rotatably arranged on compression seat, the output shaft of rotary drive piece and one end of compression board are connected on eccentric wheel, rotary drive piece drives eccentric wheel rotation and makes the other end of compression board move to compress workpiece.

2. The mold milling machine processing clamping device according to claim 1, characterized in that, The base is also provided with a positioning seat for abutting against one end of the workpiece.

3. The fixture of claim 2, wherein: The positioning seat is provided with a movable positioning pin for abutting against one end of the workpiece.

4. The mold milling machine processing clamping device according to claim 1, characterized in that, The top surface of the base is provided with a positioning groove.

5. The mold milling machine processing clamping device according to claim 1, characterized in that, The fixed seat is provided with a sleeve for the bolt to be sleeved therein.

6. The fixture of claim 5 wherein, The sleeve is arranged obliquely downward.

7. The fixture of claim 5 wherein: The bolt is provided with a guide strip, and the sleeve side wall is provided with a guide groove, when the bolt is inserted into the sleeve, the guide strip is located in the guide groove.

8. The fixture of claim 1 wherein: The eccentric wheel is provided with two first through holes, the output shaft of the rotary drive piece is connected with a first connecting shaft, the compression board is provided with a second connecting shaft, and the first connecting shaft and the second connecting shaft are respectively inserted into the two first through holes.

9. The fixture of claim 1 wherein, The compression board is sleeved with a guide sleeve, the guide sleeve is provided with a second through hole; the compression mechanism further comprises a guide column and a spring, the spring is sleeved on the guide column, the guide column passes through the second through hole and is inserted into the base, the spring is located below the guide sleeve, and the guide column is located between the processing table and the compression seat.

10. The fixture of claim 9, wherein, The guide column is a bolt.

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