Clamp device for machining workpiece

Abstract

The invention relates to the technical field of tool clamps, in particular to a clamp device for machining workpieces, which comprises a base, the base comprises a bottom plate, two side plates are symmetrically and fixedly connected to the bottom plate, one ends of the two side plates protrude, and the protruding ends of the two side plates are jointly and fixedly connected with a top plate. A clamping mechanism is arranged on the top plate, the clamping mechanism comprises a first threaded hole formed in the top plate, a bolt is in threaded connection with the interior of the first threaded hole, the bolt is slidably sleeved with a pressing plate, a circular groove is formed in the pressing plate, the bolt penetrates through the circular groove, and the bolt is sleeved with a pressing ring; the pressing ring is located between the pressing plate and the top end of the bolt, the pressing plate extends towards the other end of the side plate, a second threaded hole is formed in the top plate, the second threaded hole is located in the side, away from the other end of the side plate, of the first threaded hole, and a puller bolt is connected into the second threaded hole in a threaded mode.

Description

Technical Field

[0001] The invention relates to the technical field of tooling fixtures, and in particular to a fixture device for machining a workpiece. Background Art

[0002] In modern manufacturing, machining is an indispensable part of producing precision parts. In order to ensure machining accuracy and improve production efficiency, the workpiece needs to be accurately fixed on the machine tool during the machining process. As a key tool to achieve this goal, the design and performance of the fixture directly affect the machining quality and efficiency. Traditional fixture design often has problems such as inaccurate positioning, low clamping efficiency, and limited scope of application, especially when facing workpieces with complex shapes or special materials, these problems are more prominent.

[0003] With the popularization of the concepts of Industry 4.0 and smart manufacturing, the requirements for fixtures are gradually developing towards automation and intelligence. For example, in the production mode of multiple varieties and small batches, the rapid replacement and adjustment of fixtures has become one of the key factors to improve the flexibility of the production line. In addition, for some special industry applications, such as aerospace, medical equipment and other fields, the processing accuracy of the workpiece is extremely high, which requires the fixture to have higher stability and reliability.

[0004] When processing some rod-shaped materials, it is necessary to use a clamp to clamp the rod-shaped materials to prevent the rod-shaped materials from shifting during the processing and affecting the processing accuracy. In addition, in the industrial mass production process, a faster clamping speed is required to improve production efficiency. However, the existing rod-shaped material clamps have more clamping steps during clamping, resulting in a slow clamping speed, which easily affects production efficiency.

[0005] Therefore, a clamping device for machining a workpiece is needed to solve the above problems. Summary of the invention

[0006] In order to solve the above problem, that is, to solve the problem that the existing rod-shaped material clamp has a slow clamping speed during the clamping process, which easily affects the production efficiency, the present invention provides a clamping device for machining workpieces.

[0007] The two cams have the first and second ends respectively connected to the two guide rails, the second end of the two guide rails being connected to the two guide rails with a plurality of threaded holes, the two guide rails having a plurality of threaded holes respectively connected to the two guide rails and a plurality of threaded holes.

[0008] Preferably, the diameter of the tightening bolt is greater than the width of the circular groove.

[0009] Preferably, the bottom plate is provided with two through holes, each of the through holes is penetrated by a connecting bolt, a reinforcing plate is fixedly connected between the two side plates, and the reinforcing plate is fixedly connected to the bottom plate.

[0010] Preferably, a power mechanism is provided on the base plate, and the power mechanism includes a first motor fixedly connected to the base plate, an output end of the first motor is fixedly connected to a rod sleeve, an extension rod is slidably connected in the rod sleeve, a first spring is connected between the extension rod and the rod sleeve, a hexagonal block is fixedly connected to the top end of the extension rod, a hexagonal groove opening downward is provided at the bottom end of the tightening bolt, and the hexagonal groove is inserted into the hexagonal groove.

[0011] Preferably, the power mechanism includes a second motor fixedly connected to the base plate, the output end of the second motor is fixedly connected to a hexagonal column, the bolt is provided with a hexagonal through slot opening downward, and the hexagonal column extends into the hexagonal through slot.

[0012] Preferably, an auxiliary mechanism is provided between the two side plates, and the auxiliary mechanism includes an auxiliary part slidably arranged between the two side plates, and the auxiliary part includes an auxiliary plate, and the auxiliary plate is provided with an upwardly opening groove, and an extension plate is slidably connected to the groove, and a second spring is connected between the extension plate and the groove.

[0013] Preferably, the auxiliary mechanism includes a moving part, and the moving part includes an electromagnetic slide rail fixedly connected to the two side plates, an electromagnetic slider is slidably connected in each of the electromagnetic slide rails, a rotating shaft is rotatably connected between the two electromagnetic sliders, the auxiliary plate is fixedly sleeved on the rotating shaft, a torsion spring is connected between the auxiliary plate and the electromagnetic slider, a limiting plate is fixedly connected between the two electromagnetic sliders, the limiting plate is located on the side of the auxiliary plate away from the pressure plate, a fixing rod is fixedly connected between the two side plates, and the fixing rod is located on the upper side of the electromagnetic slide rail.

[0014] Preferably, the auxiliary mechanism also includes a processing part, which includes a slide groove opened in the bottom plate and opening upward, a slider is slidably connected in the slide groove, an airbag is fixedly connected to the slider, the other end of the airbag is fixedly connected to the bottom plate, the slider is fixedly connected to the limit plate through a bending rod, an air pipe is arranged in communication with the airbag, an air groove is opened in the extension plate, air holes are opened on the side walls of the air groove, the opening direction of the air holes is toward the lower side of the pressure plate, and the air pipe is connected to the air groove.

[0015] The beneficial effects of the present invention are:

[0016] 1. Through the setting of the pressure plate and the side plate, the workpiece can be clamped by adjusting the position of the bolt; and through the setting of the tightening bolt, an upward force can be applied to the end of the pressure plate, so that the pressure plate has a better clamping effect on the workpiece, and through the setting of the circular groove, the clamping length of the pressure plate can be adjusted to clamp different workpieces, thereby improving the applicability of the device.

[0017] 2. Through the setting of the power mechanism, the rotation of the first motor can drive the rotation of the tightening bolt, so that the tightening bolt moves up and down, and through the setting of the first spring and the extension rod, the hexagonal block can always be kept in the hexagonal groove to keep the rotation of the tightening bolt.

[0018] 3. Through the setting of the auxiliary mechanism, when the pressure plate clamps the workpiece, the auxiliary plate or the extension plate can apply pressure to the side of the workpiece to limit the movement of the workpiece in the horizontal direction, further improving the clamping effect of the device on the workpiece.

[0019] 4. Through the setting of the moving part, the auxiliary plate can be driven to move, so as to clamp the workpiece, and through the setting of the limit plate, the flipping angle of the auxiliary plate can be limited to ensure the clamping effect of the auxiliary plate. At the same time, through the setting of the fixed rod, the auxiliary plate can be flipped between the two side plates during the resetting process of the auxiliary plate, so as to facilitate the movement of the workpiece to the lower side of the pressure plate.

[0020] 5. Through the setting of the processing part, gas can be blown out through the air holes during the movement of the auxiliary plate to process the surface of the workpiece, blow off impurities such as iron filings on the surface of the workpiece, and prevent impurities from affecting the clamping effect of the pressure plate on the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The three-dimensional structure of the present invention is shown in FIG. Figure 1 ;

[0022] Figure 2 For the present invention Figure 1 The main view;

[0023] Figure 3 For the present invention Figure 2 Isometric section view at AA;

[0024] Figure 4 The three-dimensional structure of the present invention is shown in FIG. Figure 2 ;

[0025] Figure 5 For the present invention Figure 2 The main view;

[0026] Figure 6 For the present invention Figure 5 Isometric section view at the middle BB;

[0027] Figure 7 For the present invention Figure 6 A partial enlarged view of point C in the middle;

[0028] Figure 8 For the present invention Figure 6 A partial enlarged view of point D in the middle;

[0029] Fig. 9 It is a right side view of the present invention;

[0030] Fig.10 For the present invention Fig. 9 Isometric section view at EE;

[0031] Fig.11 For the present invention Fig.10 A partial enlarged view of point F in the middle.

[0032] In the figure:

[0033] 1. Base; 11. Bottom plate; 12. Side plate; 13. Top plate; 14. Connecting bolts; 15. Reinforcement plate;

[0034] 2. Clamping mechanism; 21. First threaded hole; 22. Bolt; 23. Pressing plate; 24. Round groove; 25. Pressing ring; 26. Second threaded hole; 27. Tightening bolt;

[0035] 3. Power mechanism; 31. First motor; 32. Rod sleeve; 33. Extension rod; 34. First spring; 35. Hexagonal block; 36. Hexagonal slot; 37. Second motor; 38. Hexagonal column; 39. Hexagonal through slot;

[0036] 4. Auxiliary mechanism; 41. Auxiliary part; 411. Auxiliary plate; 412. Slot; 413. Extension plate; 414. Second spring; 42. Moving part; 421. Electromagnetic slide rail; 422. Electromagnetic slider; 423. Rotating shaft; 424. Torsion spring; 425. Fixed rod; 43. Processing part; 431. Slide groove; 432. Slider; 433. Air bag; 434. Bending rod; 435. Air pipe; 436. Air groove; 437. Air hole. DETAILED DESCRIPTION

[0037] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0038] like Figure 1 , 3 As shown, the embodiment of the present invention discloses a clamping device for machining a workpiece, comprising a base 1, the base 1 comprising a bottom plate 11, two side plates 12 are symmetrically fixedly connected to the bottom plate 11, one end of the two side plates 12 is raised, and the raised ends of the two side plates 12 are commonly fixedly connected to a top plate 13, a clamping mechanism 2 is arranged on the top plate 13, the clamping mechanism 2 comprises a first threaded hole 21 opened on the top plate 13, a bolt 22 is threadedly connected in the first threaded hole 21, a pressing plate 23 is slidably sleeved on the bolt 22, A circular groove 24 is provided in the pressure plate 23, and the bolt 22 passes through the circular groove 24. A pressure ring 25 is sleeved on the bolt 22, and the pressure ring 25 is located between the pressure plate 23 and the top end of the bolt 22. The pressure plate 23 extends to the other end of the side plate 12, and a second threaded hole 26 is provided on the top plate 13. The second threaded hole 26 is located on the side of the first threaded hole 21 away from the other end of the side plate 12. A tightening bolt 27 is threadedly connected in the second threaded hole 26, and the top end of the tightening bolt 27 abuts against the pressure plate 23.

[0039] Specifically, when in use, the base plate 11 is fixed on the work station, and then the workpiece is placed on the side plate 12, and the workpiece is moved to the lower side of the pressure plate 23, and the bottom surface of the pressure plate 23 is in contact with the workpiece, and the pressure plate 23 is kept horizontal, and then the bolt 22 is rotated to move the bolt 22 downward, and the bolt 22 drives the pressure ring 25 to move downward. When the pressure ring 25 contacts the top surface of the pressure plate 23, the bolt 22 is stopped from moving, and then the tightening bolt 27 is rotated to move the tightening bolt 27 upward. When the tightening bolt 27 contacts the pressure plate 23, the tightening bolt 27 is stopped from rotating. At this time, the pressure plate 23 clamps the workpiece between the side plate 12 and the pressure plate 23; when in use, according to the size of the workpiece, the pressure plate 23 can be slid in the horizontal direction so that the bolt 22 slides in the circular groove 24 to adjust the clamping length of the pressure plate 23.

[0040] Through the setting of the pressure plate 23 and the side plate 12, the workpiece can be clamped by adjusting the position of the bolt 22; and through the setting of the tightening bolt 27, an upward force can be applied to the end of the pressure plate 23, so that the pressure plate 23 has a better clamping effect on the workpiece, and through the setting of the circular groove 24, the clamping length of the pressure plate 23 can be adjusted to clamp different workpieces, thereby improving the applicability of the device.

[0041] Furthermore, the diameter of the tightening bolt 27 is greater than the width of the circular groove 24 .

[0042] Specifically, when in use, when the tensioning bolt 27 is located at the lower side of the circular groove 24 , the tensioning bolt 27 is prevented from being inserted into the circular groove 24 because the diameter of the tensioning bolt 27 is greater than the width of the circular groove 24 .

[0043] By setting the diameter of the tightening bolt 27 to be larger than the width of the circular groove 24, it is prevented that the tightening bolt 27 is inserted into the circular groove 24, which would cause the device to be unable to be used normally.

[0044] like Figure 3 As shown, the bottom plate 11 is provided with two through holes, each of which is penetrated by a connecting bolt 14 , a reinforcing plate 15 is fixedly connected between the two side plates 12 , and the reinforcing plate 15 is fixedly connected to the bottom plate 11 .

[0045] Specifically, when in use, the base plate 11 is fixedly connected to the work station by connecting bolts 14, so that the clamp device is fixed on the work station.

[0046] like Figure 4 , 6As shown in Figures 7 and 8, a power mechanism 3 is provided on the base plate 11, and the power mechanism 3 includes a first motor 31 fixedly connected to the base plate 11, an output end of the first motor 31 is fixedly connected to a rod sleeve 32, an extension rod 33 is slidably connected in the rod sleeve 32, a first spring 34 is connected between the extension rod 33 and the rod sleeve 32, a hexagonal block 35 is fixedly connected to the top end of the extension rod 33, a hexagonal groove 36 opening downward is provided at the bottom end of the tightening bolt 27, and the hexagonal block 35 is inserted into the hexagonal groove 36.

[0047] Specifically, during use, when the tightening bolt 27 needs to be rotated, the first motor 31 is started, and the output end of the first motor 31 drives the rod sleeve 32 to rotate, the rod sleeve 32 drives the extension rod 33 to rotate, the extension rod 33 drives the hexagonal block 35 to rotate, the hexagonal block 35 cooperates with the hexagonal groove 36 to drive the tightening bolt 27 to rotate, and during the up and down movement of the tightening bolt 27, under the action of the first spring 34, the extension rod 33 moves upward, and the hexagonal block 35 is always kept in the hexagonal groove 36.

[0048] Through the setting of the power mechanism 3, the rotation of the first motor 31 can drive the rotation of the tightening bolt 27, so that the tightening bolt 27 moves up and down, and through the setting of the first spring 34 and the extension rod 33, the hexagonal block 35 can always be kept in the hexagonal groove 36, thereby maintaining the rotation of the tightening bolt 27.

[0049] like Figure 7 As shown, the power mechanism 3 includes a second motor 37 fixedly connected to the base plate 11, and the output end of the second motor 37 is fixedly connected to a hexagonal column 38. A hexagonal through slot 39 opening downward is provided in the bolt 22, and the hexagonal column 38 extends into the hexagonal through slot 39.

[0050] Specifically, when the bolt 22 is required to rotate during use, the second motor 37 is started, and the output end of the second motor 37 drives the hexagonal column 38 to rotate, and the hexagonal column 38 drives the bolt 22 to rotate.

[0051] like Figure 4 , 5 As shown in Figure 10, an auxiliary mechanism 4 is provided between the two side plates 12, and the auxiliary mechanism 4 includes an auxiliary member 41 slidably provided between the two side plates 12, and the auxiliary member 41 includes an auxiliary plate 411, and an upwardly opening slot 412 is provided in the auxiliary plate 411, and an extension plate 413 is slidably connected to the slot 412, and a second spring 414 is connected between the extension plate 413 and the slot 412.

[0052] Specifically, during use, when the workpiece moves to the lower side of the pressure plate 23, the auxiliary plate 411 is moved, and the auxiliary plate 411 drives the extension plate 413 to move. When the auxiliary plate 411 or the extension plate 413 contacts the workpiece, the movement of the auxiliary plate 411 is stopped, and then the pressure plate 23 is moved downward so that the pressure plate 23 contacts the extension plate 413. Then, the pressure plate 23 continues to be moved downward, and the pressure plate 23 drives the extension plate 413 to move downward, so that the extension plate 413 compresses the second spring 414. When the pressure plate 23 contacts the workpiece, the downward movement of the pressure plate 23 is stopped.

[0053] By setting the auxiliary mechanism 4, when the pressure plate 23 clamps the workpiece, the auxiliary plate 411 or the extension plate 413 can apply pressure to the side of the workpiece to limit the movement of the workpiece in the horizontal direction, further improving the clamping effect of the device on the workpiece.

[0054] like Figure 6 , 10 As shown in Figure 11, the auxiliary mechanism 4 includes a moving part 42, and the moving part 42 includes an electromagnetic slide rail 421 fixedly connected to the two side plates 12, an electromagnetic slider 422 is slidably connected in each of the electromagnetic slide rails 421, and a rotating shaft 423 is rotatably connected between the two electromagnetic sliders 422, the auxiliary plate 411 is fixedly sleeved on the rotating shaft 423, a torsion spring 424 is connected between the auxiliary plate 411 and the electromagnetic slider 422, a limiting plate is fixedly connected between the two electromagnetic sliders 422, and the limiting plate is located on the side of the auxiliary plate 411 away from the pressure plate 23, and a fixing rod 425 is fixedly connected between the two side plates 12, and the fixing rod 425 is located on the upper side of the electromagnetic slide rail 421.

[0055] Specifically, during use, when the auxiliary plate 411 needs to be moved, the electromagnetic slider 422 is started, the electromagnetic slider 422 moves in the electromagnetic slide rail 421, the electromagnetic slider 422 drives the rotating shaft 423 to move, and the rotating shaft 423 drives the auxiliary plate 411 to move to clamp the workpiece; when the auxiliary plate 411 needs to be reset, the electromagnetic slider 422 is moved in the opposite direction, and the electromagnetic slider 422 drives the auxiliary plate 411 to reset, and when the auxiliary plate 411 abuts against the fixed rod 425, under the abutment action of the fixed rod 425, the auxiliary plate 411 drives the rotating shaft 423 to rotate, and at the same time accumulates force in the torsion spring 424.

[0056] By setting the movable part 42, the auxiliary plate 411 can be driven to move, so as to clamp the workpiece, and by setting the limit plate, the flipping angle of the auxiliary plate 411 can be limited to ensure the clamping effect of the auxiliary plate 411. At the same time, by setting the fixing rod 425, during the resetting process of the auxiliary plate 411, the auxiliary plate 411 can be flipped between the two side plates 12, so as to facilitate the movement of the workpiece to the lower side of the pressure plate 23.

[0057] Furthermore, the electromagnetic slide rail 421 and the electromagnetic slider 422 are prior art and will not be described in detail.

[0058] like Figure 6 , 8 As shown in Figure 10, the auxiliary mechanism 4 also includes a processing part 43, and the processing part 43 includes a slide groove 431 opened in the bottom plate 11 and opening upward, a slider 432 is slidably connected in the slide groove 431, an air bag 433 is fixedly connected to the slider 432, the other end of the air bag 433 is fixedly connected to the bottom plate 11, the slider 432 is fixedly connected to the limit plate through a bending rod 434, an air pipe 435 is connected to the air bag 433, an air groove 436 is opened in the extension plate 413, an air hole 437 is opened on the side wall of the air groove 436, the opening direction of the air hole 437 is toward the lower side of the pressure plate 23, and the air pipe 435 is connected to the air groove 436.

[0059] Specifically, during use, when the auxiliary plate 411 moves toward the pressure plate 23, the electromagnetic slider 422 drives the bending rod 434 to move, and the bending rod 434 drives the slider 432 to compress the airbag 433. The gas in the airbag 433 enters the air groove 436 through the air pipe 435, and then the gas is blown onto the surface of the workpiece through the air hole 437.

[0060] By setting the processing part 43, gas can be blown out through the air hole 437 during the movement of the auxiliary plate 411 to process the surface of the workpiece, blow off impurities such as iron filings on the surface of the workpiece, and prevent the impurities from affecting the clamping effect of the pressure plate 23 on the workpiece.

[0061] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0062] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0063] The term "comprise" or any other similar term is intended to cover a non-exclusive inclusion, such that a process, article, or apparatus / device that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, article, or apparatus / device.

[0064] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A fixture device for machining a workpiece, characterized in that: The invention comprises a base (1), wherein the base (1) comprises a bottom plate (11), wherein two side plates (12) are symmetrically fixedly connected to the bottom plate (11), wherein one end of the two side plates (12) is raised, and the raised ends of the two side plates (12) are commonly fixedly connected to a top plate (13), wherein a clamping mechanism (2) is arranged on the top plate (13), wherein the clamping mechanism (2) comprises a first threaded hole (21) provided on the top plate (13), wherein a bolt (22) is threadedly connected to the first threaded hole (21), wherein a pressing plate (23) is slidably sleeved on the bolt (22), and wherein a circular groove (24) is arranged in the pressing plate (23). ), the bolt (22) passes through the circular groove (24), a pressure ring (25) is sleeved on the bolt (22), the pressure ring (25) is located between the pressure plate (23) and the top end of the bolt (22), the pressure plate (23) extends to the other end of the side plate (12), a second threaded hole (26) is opened on the top plate (13), the second threaded hole (26) is located on the side of the first threaded hole (21) away from the other end of the side plate (12), a tightening bolt (27) is threadedly connected in the second threaded hole (26), and the top end of the tightening bolt (27) abuts against the pressure plate (23).

2. A fixture device for machining a workpiece according to claim 1, characterized in that: The diameter of the tightening bolt (27) is greater than the width of the circular groove (24).

3. A fixture device for machining a workpiece according to claim 2, characterized in that: The bottom plate (11) is provided with two through holes, each of which is penetrated by a connecting bolt (14), a reinforcing plate (15) is fixedly connected between the two side plates (12), and the reinforcing plate (15) is fixedly connected to the bottom plate (11).

4. A fixture device for machining a workpiece according to claim 3, characterized in that: The base plate (11) is provided with a power mechanism (3), the power mechanism (3) comprising a first motor (31) fixedly connected to the base plate (11), the output end of the first motor (31) being fixedly connected to a rod sleeve (32), an extension rod (33) being slidably connected in the rod sleeve (32), a first spring (34) being connected between the extension rod (33) and the rod sleeve (32), a hexagonal block (35) being fixedly connected to the top end of the extension rod (33), a hexagonal groove (36) opening downwardly being provided at the bottom end of the tightening bolt (27), the hexagonal block (35) being inserted into the hexagonal groove (36).

5. A fixture device for machining a workpiece according to claim 4, characterized in that: The power mechanism (3) comprises a second motor (37) fixedly connected to the base plate (11); the output end of the second motor (37) is fixedly connected to a hexagonal column (38); a hexagonal through slot (39) opening downward is provided in the bolt (22); and the hexagonal column (38) extends into the hexagonal through slot (39).

6. A fixture device for machining a workpiece according to claim 5, characterized in that: An auxiliary mechanism (4) is arranged between the two side plates (12), and the auxiliary mechanism (4) comprises an auxiliary member (41) slidably arranged between the two side plates (12), and the auxiliary member (41) comprises an auxiliary plate (411), and an upwardly opening slot (412) is provided in the auxiliary plate (411), and an extension plate (413) is slidably connected to the slot (412), and a second spring (414) is connected between the extension plate (413) and the slot (412).

7. A fixture device for machining a workpiece according to claim 6, characterized in that: The auxiliary mechanism (4) comprises a moving part (42), the moving part (42) comprises an electromagnetic slide rail (421) fixedly connected to the two side plates (12), an electromagnetic slider (422) is slidably connected in each of the electromagnetic slide rails (421), a rotating shaft (423) is rotatably connected between the two electromagnetic sliders (422), the auxiliary plate (411) is fixedly sleeved on the rotating shaft (423), a torsion spring (424) is connected between the auxiliary plate (411) and the electromagnetic slider (422), a limit plate is fixedly connected between the two electromagnetic sliders (422), the limit plate is located on a side of the auxiliary plate (411) away from the pressure plate (23), a fixed rod (425) is fixedly connected between the two side plates (12), and the fixed rod (425) is located on the upper side of the electromagnetic slide rail (421).

8. A fixture device for machining a workpiece according to claim 7, characterized in that: The auxiliary mechanism (4) also includes a processing part (43), the processing part (43) includes a slide groove (431) opened in the bottom plate (11) and opening upward, a slider (432) is slidably connected in the slide groove (431), an air bag (433) is fixedly connected to the slider (432), the other end of the air bag (433) is fixedly connected to the bottom plate (11), the slider (432) is fixedly connected to the limit plate through a bending rod (434), an air pipe (435) is arranged in communication with the air bag (433), an air groove (436) is opened in the extension plate (413), an air hole (437) is opened on the side wall of the air groove (436), the opening direction of the air hole (437) is toward the lower side of the pressing plate (23), and the air pipe (435) is connected to the air groove (436).

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