Milling machine fixture facilitating workpiece overturning

Abstract

The utility model discloses a milling machine fixture convenient for turning over a workpiece, which relates to the technical field of milling machine fixtures and comprises a base, two sliding blocks arranged in a mirroring manner are arranged on the base in a sliding manner, turntables are rotationally connected to one sides above the two sliding blocks, two clamping blocks are connected to one sides of the turntables in a sliding manner, and a two-way screw I is rotationally connected to the turntables; the two clamping blocks are connected to the first two-way screw in a screwed mode, a first rotary knob is fixedly installed on the first two-way screw, two positioning holes are formed in the circumferential side wall of each rotary disc, and the two positioning holes are located in the upper side and the lower side of each rotary disc. The positioning pin can be pulled out of the positioning hole by screwing the second knob, at the moment, the workpiece can be turned over, the positioning hole in the other side is aligned with the positioning pin, the rotary disc can be fixed again by reversely screwing the second knob, the distance between the two sliding blocks can be adjusted by screwing the third knob, and workpieces of different lengths can be clamped. And the applicability of the clamp is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of milling machine fixtures, in particular to a milling machine fixture convenient for workpiece turning. Background Technique

[0002] A milling machine is a machine tool with a wide range of uses. On a milling machine, planes (horizontal planes, vertical planes), grooves (keyways, T-slots, dovetail grooves, etc.), spline parts (gears, spline shafts, sprockets), helical surfaces (threads, helical grooves) and various curved surfaces can be machined. In addition, it can also be used for machining the surfaces of rotating bodies, internal holes and cutting work, etc. When the milling machine is working, the workpiece needs to be installed on the fixture. The rotation of the milling cutter is the main movement, supplemented by the feeding movement of the workbench or the milling head, and the required machined surface of the workpiece can be obtained.

[0003] However, most of the existing milling machine fixtures are fixed. If it is necessary to machine the other surface of the workpiece, the workpiece needs to be removed and reinstalled, which greatly reduces the work efficiency and the repeated clamping will affect the accuracy of the workpiece. Therefore, providing a milling machine fixture convenient for workpiece turning is a technical problem that needs to be solved urgently by those skilled in the art. Content of the Utility Model

[0004] In view of the deficiencies of the prior art, the utility model provides a milling machine fixture convenient for workpiece turning to solve the problems raised in the above background technique.

[0005] To achieve the above purposes, the utility model is realized through the following technical solutions: A milling machine fixture convenient for workpiece turning, including a base, two mirror-image sliders are slidably arranged on the base, a turntable is rotatably connected to one side above each of the two sliders, two clamping blocks are slidably connected to one side of the turntable, a bidirectional screw rod I is rotatably connected to the turntable, both clamping blocks are screwed onto the bidirectional screw rod I, a knob I is fixedly installed on the bidirectional screw rod I, two positioning holes are opened on the circumferential side wall of the turntable, the two positioning holes are located on the upper and lower sides of the turntable, a positioning pin that can be inserted into the positioning hole is slidably arranged below the turntable in the slider, a driving component capable of pushing the positioning pin upward is arranged in each of the two sliders, and the two driving components can be driven synchronously.

[0006] Preferably, the driving component includes a wedge block, an installation cavity is opened in the slider, the wedge block slides in the installation cavity, the bottom of the positioning pin can contact the upper surface of the wedge block, a spring capable of pushing the positioning pin downward is also arranged in the slider, a threaded rod capable of passing through the installation cavity is rotatably arranged in the base, the wedge block is screwed onto the threaded rod, and one end of the threaded rod is fixedly connected to a knob II.

[0007] Preferably, the other end of the threaded rod is fixedly connected with a sleeve, and a connecting rod is rotatably connected to the base. The sleeve is sleeved on the connecting rod and the two are connected by a sliding key.

[0008] Preferably, a chute is formed in the base. The bottoms of the two sliders slide in the chute. A bidirectional screw rod II is rotatably arranged in the chute. Both sliders are screwed onto the bidirectional screw rod II, and a knob III is fixedly arranged at the end of the bidirectional screw rod II.

[0009] Preferably, the upper end of the positioning pin is pointed.

[0010] Beneficial effects

[0011] The utility model provides a milling machine fixture convenient for workpiece flipping, which has the following beneficial effects: the workpiece can be fixed on the two turntables through the clamping blocks. By turning the knob II, the positioning pin can be pulled out of the positioning hole. At this time, the workpiece can be flipped, and the positioning hole on the other side can be aligned with the positioning pin. By turning the knob II in the reverse direction, the turntable can be fixed again. Through the cooperation of the sleeve and the connecting rod, the positioning pins on the two sliders can move simultaneously, which is simple to operate and convenient to use. By turning the knob III, the distance between the two sliders can be adjusted, so that workpieces of different lengths can be clamped, improving the applicability of the fixture. Description of the drawings

[0012] Figure 1 is the main view internal structure diagram of the utility model;

[0013] Figure 2 is Figure 1 the partial enlarged view of A in

[0014] In the figure: 1. Base; 2. Slider; 3. Turntable; 4. Clamping block; 5. Bidirectional screw rod I; 6. Knob I; 7. Positioning hole; 8. Positioning pin; 9. Installation cavity; 10. Wedge block; 11. Threaded rod; 12. Knob II; 13. Sleeve; 14. Connecting rod; 15. Chute; 16. Bidirectional screw rod II; 17. Knob III; 18. Spring. Specific implementation manners

[0015] Next, the technical solutions in the embodiments of the utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the utility model.

[0016] Please refer to Figure 1-2The utility model provides a technical solution: a milling machine fixture that is convenient for turning over a workpiece, comprising a base 1, on which two mirror-image slide blocks 2 are slidably provided. By adjusting the distance between the two slide blocks 2, the fixture can be used to clamp workpieces of different lengths. A turntable 3 is rotatably connected to one side of the two slide blocks 2, and two clamping blocks 4 for clamping one end of the workpiece are slidably connected to one side of the turntable 3. A bidirectional screw 5 is rotatably connected to the turntable 3, and the two clamping blocks 4 are both screwed onto the bidirectional screw 5. A knob 6 is fixedly installed on the bidirectional screw 5. The staff can turn the knob 6 to rotate the workpiece. The bidirectional screw 5 is rotated to control the two clamping blocks 4 to move closer or farther away from each other, thereby clamping the workpiece. Two positioning holes 7 are provided on the circumferential side wall of the turntable 3. The two positioning holes 7 are located on the upper and lower sides of the turntable 3. A positioning pin 8 that can be inserted into the positioning hole 7 is slidingly provided in the slider 2 below the turntable 3. The turntable 3 can be fixed by the positioning pin 8. When the positioning pin 8 is removed from the positioning hole 7, the staff can rotate the workpiece to drive the two turntables 3 to rotate. Both sliders 2 are provided with a driving component that can push the positioning pin 8 upward, and the two driving components can be driven synchronously.

[0017] As an embodiment of the present utility model, the driving assembly includes a wedge 10, and an installation cavity 9 is opened in the slider 2. The wedge 10 slides in the installation cavity 9, and the bottom of the positioning pin 8 can contact the upper surface of the wedge 10. The slider 2 is also provided with a spring 18 that can push the positioning pin 8 to move downward. The spring 18 can facilitate the positioning pin 8 to be withdrawn from the positioning hole 7. A threaded rod 11 that can pass through the installation cavity 9 is rotatably provided in the base 1. The wedge 10 is screwed onto the threaded rod 11, and a knob 2 12 is fixedly connected to one end of the threaded rod 11. The staff can rotate the knob 2 12 to rotate the threaded rod 11. The rotation of the threaded rod 11 can make the wedge 10 move along its axial direction, and the positioning pin 8 is pushed upward by the wedge.

[0018] As an embodiment of the present invention, the other end of the threaded rod 11 is fixedly connected to a sleeve 13, and a connecting rod 14 is rotatably connected to the base 1. The sleeve 13 is sleeved on the connecting rod 14 and the two are connected by a sliding key, so that the sleeve 13 can move axially relative to the connecting rod 14 and ensure the transmission of torque between the two. When the distance between the two sliders 2 is adjusted, it can still be ensured that the driving assembly can be driven synchronously.

[0019] As an embodiment of the present utility model, a slide groove 15 is opened in the base 1, and the bottoms of the two sliders 2 slide in the slide groove 15. A two-way screw rod 16 is rotatably arranged in the slide groove 15. The two sliders 2 are screwed on the two-way screw rod 16. The end of the two-way screw rod 16 is fixedly provided with a knob 3 17. The staff can rotate the two-way screw rod 16 by turning the knob 3 17, so that the two sliders 2 are moved closer to or away from each other, thereby realizing the adjustment of the distance between the two sliders 2.

[0020] As an embodiment of the present utility model, the upper end of the positioning pin 8 is pointed. When there is a small offset between the positioning pin 8 and the positioning hole 7, the inclined surface at the upper end of the positioning pin 8 facilitates the insertion of the positioning pin 8 into the positioning hole 7.

[0021] The working principle and usage process of the present utility model are as follows: First, adjust the distance between the two sliders 2 according to the length of the workpiece, place both ends of the workpiece between the clamping blocks 4 on the turntable 3, turn the first knob 6 to clamp the workpiece through the clamping blocks 4, machine one surface of the workpiece, turn the second knob 12 to move the positioning pin 8 out of the positioning hole 7. At this time, the workpiece can be flipped, and the positioning hole 7 on the other side can be aligned with the positioning pin 8. After flipping, rotate the second knob 12 in the reverse direction to insert the positioning pin 8 into the positioning hole 7 to complete the fixation of the turntable 3.

[0022] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A milling machine fixture facilitating workpiece flipping, characterized in that, It includes a base (1), on which two mirror - arranged sliders (2) are slidably provided. On one side above the two sliders (2), a turntable (3) is rotatably connected. On one side of the turntable (3), two clamping blocks (4) are slidably connected. A first bidirectional screw (5) is rotatably connected to the turntable (3). The two clamping blocks (4) are both screwed onto the first bidirectional screw (5). A first knob (6) is fixedly installed on the first bidirectional screw (5). Two positioning holes (7) are formed in the circumferential side wall of the turntable (3), and the two positioning holes (7) are located on the upper and lower sides of the turntable (3). A positioning pin (8) capable of inserting into the positioning hole (7) is slidably provided below the turntable (3) inside the slider (2). A driving component capable of pushing the positioning pin (8) upward is provided in each of the two sliders (2), and the two driving components can be driven synchronously.

2. The milling machine fixture for facilitating workpiece flipping according to claim 1, wherein, The driving component includes a wedge block (10). An installation cavity (9) is formed inside the slider (2). The wedge block (10) slides in the installation cavity (9). The bottom of the positioning pin (8) can contact the upper surface of the wedge block (10). A spring (18) capable of pushing the positioning pin (8) downward is further provided inside the slider (2). A threaded rod (11) capable of passing through the installation cavity (9) is rotatably provided inside the base (1). The wedge block (10) is screwed onto the threaded rod (11). One end of the threaded rod (11) is fixedly connected to a second knob (12).

3. The milling machine fixture for facilitating workpiece turnover according to claim 2, wherein The other end of the threaded rod (11) is fixedly connected to a sleeve (13). A connecting rod (14) is rotatably connected to the base (1). The sleeve (13) is sleeved on the connecting rod (14) and is connected by a sliding key between them.

4. A milling machine fixture facilitating workpiece flipping according to claim 1, characterized in that, A chute (15) is formed inside the base (1). The bottoms of the two sliders (2) slide in the chute (15). A second bidirectional screw (16) is rotatably provided inside the chute (15). The two sliders (2) are both screwed onto the second bidirectional screw (16). The end of the second bidirectional screw (16) is fixedly provided with a third knob (17).

5. A milling machine fixture for facilitating workpiece flipping according to claim 1, wherein The upper end of the positioning pin (8) is pointed.

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