A multi-station machining fixture

Abstract

The present application relates to the technical field of workpiece machining, in particular to a multi-station machining clamp. The multi-station machining clamp comprises a base, a square box structure and at least two clamping plates. The square box structure is installed on the base, and the square box structure comprises a square box body having a plurality of installation surfaces. Two clamping plates are detachably installed on any two installation surfaces of the square box body. The clamping plates are used for installing workpieces to be machined. The multi-station machining clamp can independently install workpieces to be machined on each clamping plate by setting the square box body and detachably installing the clamping plates on any two installation surfaces of the square box body, thereby effectively solving the technical problem of low machining efficiency caused by the fact that the existing single workpiece clamp can only clamp one workpiece at a time and needs to frequently stop and change workpieces.

Description

Technical Field

[0001] This invention relates to the field of workpiece machining technology, and more specifically to a multi-station machining fixture. Background Technology

[0002] In the field of machining, especially for the mass production of large and complex workpieces such as armor plates and box-shaped parts, horizontal machining centers are widely used due to their high rigidity and excellent chip removal performance. Currently, the workpiece clamping fixtures used in existing technologies for horizontal machining centers mainly consist of a fixed base and a set of single positioning and clamping elements, and their function is limited to positioning and locking a single workpiece.

[0003] In actual production operations, after the machine tool completes all the cutting processes of a workpiece, it is disassembled, and another clamped workpiece to be processed is placed in place, and the machine tool is started for the next cycle.

[0004] Because only one workpiece can be processed at a time, frequent loading and unloading occur during batch production, resulting in long machine tool standby time and low work efficiency. Summary of the Invention

[0005] (a) The problem to be solved by the present invention is that since only one workpiece can be processed at a time, the loading and unloading of materials are frequent during batch production, the machine tool has a long standby time and low work efficiency.

[0006] (II) Technical Solution The present invention provides a multi-station machining fixture, comprising a base, a square box structure, and at least two clamping plates; the square box structure is mounted on the base, the square box structure comprising a square box body having multiple mounting surfaces; the two clamping plates are detachably mounted on any two mounting surfaces of the square box body; the clamping plates are used to mount the workpiece to be processed.

[0007] According to one embodiment of the present invention, the clamping plate is provided with five, and the plurality of mounting surfaces are respectively the front, back, first side, second side and top surface of the square box; The five clamping plates are respectively installed on the front, back, first side, second side and top surface of the box body.

[0008] According to one embodiment of the present invention, at least two chuck mechanisms are respectively installed on the front, back, first side, second side and top surface of the square box, and the clamping plate is provided with positioning pins corresponding to the chuck mechanisms one by one.

[0009] According to one embodiment of the present invention, the square box structure includes a base plate, the square box body is disposed on the base plate, the base is provided with at least two chuck mechanisms, and the bottom surface of the base plate is provided with positioning pins corresponding to the chuck mechanisms one by one.

[0010] According to one embodiment of the present invention, the chuck mechanism is a zero-point pneumatic chuck.

[0011] According to one embodiment of the present invention, the clamping plate is provided with a plurality of threaded holes for mounting the workpiece to be processed.

[0012] According to one embodiment of the present invention, a chuck mechanism is provided at each of the four corners of the front and the four corners of the back of the square box.

[0013] According to one embodiment of the present invention, two chuck mechanisms are respectively provided on the first side, the second side and the top surface of the box body.

[0014] According to one embodiment of the present invention, the surface of the square box body is provided with mounting holes corresponding one-to-one with the chuck mechanism, and the chuck mechanism is installed in the mounting holes; the square box structure is provided with a vertically arranged inner hole, the inner hole penetrates the bottom plate and is connected to the mounting holes.

[0015] According to one embodiment of the present invention, the base is used for mounting to a machine tool rotary table, and the base is provided with at least one mounting through hole.

[0016] The beneficial effects of this invention are: This multi-station machining fixture features a square box body with detachable clamping plates on any two mounting surfaces, allowing each clamping plate to independently mount the workpiece to be processed. This effectively solves the technical problem of low processing efficiency caused by existing single-workpiece fixtures that can only clamp one workpiece at a time and require frequent machine stops for part changes. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 A perspective view of the multi-station machining fixture provided in the embodiments of this application; Figure 2 This is a structural diagram of the box structure provided in the embodiments of this application; Figure 3 A structural diagram of the base provided in an embodiment of this application; Figure 4 This is a structural diagram of the square box structure and clamping plate provided in the embodiments of this application; Figure 5 A structural diagram of the first clamping plate provided in an embodiment of this application; Figure 6 This is a structural diagram of the third clamping plate provided in an embodiment of this application.

[0019] Icons: 1. Base; 101. First chuck mechanism; 2. Square box structure; 201. Base plate; 202. Square box body; 203. Second chuck mechanism; 204. First positioning pin; 205. Inner hole; 3. First clamping plate; 301. Second positioning pin; 4. Second clamping plate; 5. Third clamping plate; 6. Fourth clamping plate; 7. Fifth clamping plate. Detailed Implementation

[0020] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] like Figures 1-6 As shown, one embodiment of the present invention provides a multi-station machining fixture, including a base 1, a square box structure 2, and at least two clamping plates; the square box structure 2 is mounted on the base 1, and the square box structure 2 includes a square box body 202, which has multiple mounting surfaces; the two clamping plates are detachably mounted on any two mounting surfaces of the square box body 202; the clamping plates are used to mount the workpiece to be processed.

[0022] This multi-station machining fixture, by setting up a square box 202 and detachably installing clamping plates on any two mounting surfaces of the square box 202, allows each clamping plate to independently mount the workpiece to be processed, effectively solving the technical problem of low processing efficiency caused by existing single-workpiece fixtures that can only clamp one workpiece at a time and require frequent machine stops to change parts.

[0023] In some embodiments, there are five clamping plates, namely a first clamping plate 3, a second clamping plate 4, a third clamping plate 5, a fourth clamping plate 6 and a fifth clamping plate 7, which are respectively installed on the front, back, first side (right side), second side (left side) and top surface of the box body 202.

[0024] In some embodiments, the base 1 is generally plate-shaped, and the base 1 has multiple mounting through holes, including connected countersunk screw holes and through holes. Through these holes, the base 1 can be tightly fixed to the machine tool table (e.g., the rotary table of a horizontal machining center) using fasteners, ensuring the stability of the fixture as a whole during the machining process.

[0025] In addition, four first chuck mechanisms 101 are provided on the upper surface of the base 1. The four first chuck mechanisms 101 are distributed at predetermined positions on the upper surface of the base 1, specifically, the four first chuck mechanisms 101 are located in the four corner areas of the upper surface of the base 1. The first chuck mechanisms 101 are used to cooperate with the first positioning pins 204 at the bottom of the box structure 2 to realize the quick positioning and locking of the box structure 2 on the base 1.

[0026] Optionally, it can be made of stainless steel to ensure sufficient structural strength and corrosion resistance.

[0027] In some embodiments, weight-reduction holes or process holes may be provided in the four corner areas of the base 1 to reduce the overall weight of the base 1 and facilitate processing and assembly.

[0028] In this embodiment, as Figure 2 As shown, the box structure 2 includes a base plate 201 and a box body 202. The base plate 201 is plate-shaped and located at the bottom of the box body 202. The lower surface of the base plate 201 has four first positioning pins 204 that cooperate with the first chuck mechanism 101. When the box structure 2 is installed on the base 1, the four first positioning pins 204 are respectively inserted into the four first chuck mechanisms 101. Through the locking action of the first chuck mechanisms 101, the box structure 2 is fixed to the base 1. The first positioning pins 204 adopt a standard pull pin structure of a zero-point positioning system. One end is fixed to the bottom surface of the base plate 201, and the side wall has positioning grooves for cooperating with the first chuck mechanism 101.

[0029] Furthermore, the box 202 is a hollow polyhedral structure, specifically composed of six faces, including a front, a back, a first side, a second side, a top, and a bottom (the bottom is connected to the base plate 201). The cross-section of the box 202 is rectangular, with the front and back facing each other and parallel, the first and second side facing each other and parallel, and the top and bottom facing each other and parallel. Adjacent faces of the box 202 are perpendicular to each other.

[0030] In this embodiment, at least two chuck mechanisms are installed on the front, back, first side, second side and top surfaces of the box body 202.

[0031] As a specific embodiment, a second chuck mechanism 203 is provided at each of the four corners of the front of the box body 202, and a second chuck mechanism 203 is provided at each of the four corners of the back, that is, there are four second chuck mechanisms 203 on the front and back. Two second chuck mechanisms 203 are provided on the first side, the second side, and the top surface of the box body 202. Correspondingly, one side of the first clamping plate 3 is provided with four second positioning pins 301 corresponding to the second chuck mechanisms 203 on the front of the box body 202, and one side of the second clamping plate 4 is provided with four second positioning pins 301 corresponding to the four second chuck mechanisms 203 on the back of the box body 202. The third clamping plate 5, the fourth clamping plate 6, and the fifth clamping plate 7 are respectively provided with two second positioning pins 301 corresponding to the two second chuck mechanisms 203 on the first side, the second side, and the top surface of the box body 202.

[0032] It should be noted that the first chuck mechanism 101 and the second chuck mechanism 203 mentioned above are both zero-point pneumatic chucks. The zero-point pneumatic chuck includes a chuck body, a piston, a spring, and multiple steel balls. The chuck body is a cylindrical or annular structure with an internal cavity for accommodating the piston and spring. The center of the chuck body has a positioning hole for inserting a positioning pin. The inner wall of the positioning hole has a tapered positioning surface. The piston is located inside the chuck body and can slide along the axial direction of the chuck body. The spring is located between the piston and the chuck body and is used to apply elastic force to the piston. Multiple steel balls are located circumferentially on the chuck body and distributed along the circumferential direction of the positioning hole, and can move in the radial direction of the chuck body.

[0033] The working principle of the zero-point pneumatic chuck is as follows: In the unlocked state, compressed air (usually 6 bar) is introduced into the chuck body. The compressed air pushes the piston to move axially, compressing the spring and causing the piston to release its restraint on the steel ball. At this time, the steel ball can move radially outward, the inner diameter of the positioning hole expands, and the positioning pin can freely insert or remove from the positioning hole. In the locked state, the compressed air is cut off, the elastic force of the spring pushes the piston to return to its original position, and the piston pushes the steel ball radially inward, causing the steel ball to converge. After the steel ball converges, it is clamped in the positioning groove of the positioning pin, realizing simultaneous axial and radial positioning and locking of the positioning pin. The zero-point pneumatic chuck adopts a constant locking mechanism, that is, the air-cut state is the locked state, and the air-pumped state is the unlocked state. Since the zero-point pneumatic chuck is existing technology, it will not be described in detail here.

[0034] Since the connection between each clamping plate and the square box 202 adopts a zero-point positioning chuck and positioning pin, the positional accuracy and connection rigidity of each clamping plate after installation are guaranteed. At the same time, since each clamping plate is connected to the square box 202 through an independent chuck mechanism, each clamping plate can be disassembled and replaced independently, realizing the modular design concept.

[0035] In this embodiment, the surface of the box 202 is provided with mounting holes that correspond one-to-one with the second chuck mechanism 203. The second chuck mechanism 203 is installed in the mounting holes, and the axis of the mounting holes is perpendicular to the surface in which they are located, ensuring that the axis of the second chuck mechanism 203 is perpendicular to the surface in which it is located after installation.

[0036] In this embodiment, as Figure 4 As shown, the interior of the box 202 is hollow, with an inner hole 205 vertically oriented. The inner hole 205 penetrates the bottom plate 201 and connects to the mounting holes on each surface of the box 202. This allows pneumatic lines to pass through the inner hole 205 from inside the box 202 to the mounting holes and connect to the second chuck mechanism 203. The inner hole 205 reduces the overall weight of the box 202 and allows the pneumatic lines controlling each chuck mechanism to extend through the inner hole 205 to each surface of the box 202 and connect to the chuck mechanism on each surface.

[0037] In some embodiments, the base plate 201 and the box body 202 can be fixedly connected by welding or integral molding.

[0038] In this embodiment, the dimensions of the first clamping plate 3, the second clamping plate 4, the third clamping plate 5, the fourth clamping plate 6, and the fifth clamping plate 7 are adapted to the dimensions of their corresponding surfaces.

[0039] like Figure 1 As shown, the first clamping plate 3 and the second clamping plate 4 are square clamping process plates, corresponding to the shapes of the front and back of the square box 202. The third clamping plate 5, the fourth clamping plate 6, and the fifth clamping plate 7 are rectangular clamping process plates, corresponding to the shapes of the first side, the second side, and the top surface of the square box 202, respectively. It should be noted that the front and back are square to ensure maximum expansion of the production load of the vertical machining center. The first side, the second side, and the top surface are designed as rectangles to ensure that, while maximizing the expansion of the production load of the vertical machining center, the clamping plates at these locations will not interfere with the spindle of the horizontal machining center when used in a horizontal machining center.

[0040] In this embodiment, the outer side of each clamping plate (the side facing away from the opposite housing 202) is the workpiece mounting surface, used to mount the workpiece to be processed. The outer side of the clamping plate is provided with multiple threaded holes for mounting the workpiece to be processed.

[0041] In some embodiments, the threaded holes are distributed in a predetermined array to accommodate the installation requirements of workpieces of different sizes and shapes. Operators can select appropriate threaded hole positions based on the specific structure of the workpiece and fix it to the clamping plate using bolts or other fasteners. This gives the clamping plate excellent versatility and adaptability, making it suitable for clamping various types and specifications of workpieces.

[0042] In this embodiment, the base 1 has a hole through which the air supply pipe passes. The hole is located on the side or bottom of the base 1. After passing through the hole on the base 1, the air pipe communicates with the first chuck mechanism 101.

[0043] This allows the air tube to be introduced from below or to the side of the base 1, passing through the through hole and directly into the first chuck mechanism 101. Through the above-mentioned passage path, the air pressure provided by the external air source can be smoothly delivered to each of the first chuck mechanisms 101 via the air tube, realizing independent air supply and control of the first chuck mechanism 101.

[0044] The assembly process of the multi-station machining fixture in this embodiment will be described in detail below.

[0045] First, install base 1 onto the rotary table of the horizontal machining center. Specifically, place base 1 at the predetermined position on the rotary table, ensuring that the lower surface of base 1 is flush with the upper surface of the rotary table. Secure base 1 to the rotary table using fasteners through the countersunk screw holes and through holes on base 1. During installation, use precision measuring tools (such as a dial indicator) to calibrate the levelness and position of base 1, ensuring that the upper surface of base 1 is horizontal and its position is consistent with the machine tool coordinate system.

[0046] Simultaneously, each workpiece to be processed is mounted on the outer surface of each clamping plate. Specifically, based on the structure and size of the workpiece, a suitable threaded hole position is selected on the outer surface of the clamping plate, the workpiece is placed on the outer surface of the clamping plate, and the workpiece is fixed to the clamping plate with fasteners such as bolts. Each clamping plate can mount one or more workpieces, the specific number depending on the size of the workpiece and the size of the clamping plate. Install the assembled workpiece clamping plates onto the corresponding surfaces of the square box 202. Taking the installation of the first clamping plate 3 as an example: Introduce compressed air into the second chuck mechanism 203 to unlock it, allowing the second positioning pins 301 to be easily inserted. Then, align the four second positioning pins 301 on the inner side of the first clamping plate 3 with the four second chuck mechanisms 203 on the front of the square box 202. Move the first clamping plate 3 towards the front of the square box 202, inserting the four second positioning pins 301 into the four second chuck mechanisms 203. After the second positioning pins 301 are in place, cut off the compressed air, and the second chuck mechanism 203 locks the second positioning pins 301, thus fixing the first clamping plate 3 to the front of the square box 202. Following the same method, the second clamping plate 4 is installed on the back of the box 202, the third clamping plate 5 is installed on the first side of the box 202, the fourth clamping plate 6 is installed on the second side of the box 202, and the fifth clamping plate 7 is installed on the top surface of the box 202. Next, the entire box structure 2 is transported to a position directly above the base 1. Compressed air is introduced into the first chuck mechanism 101 on the base 1, causing the first chuck mechanism 101 to be in the unlocked state. Then, the four first positioning pins 204 on the lower surface of the base plate 201 of the box structure 2 are aligned with the four first chuck mechanisms 101 on the upper surface of the base 1. The box structure 2 is then moved downwards, allowing the four first positioning pins 204 to insert into the four first chuck mechanisms 101. Once the first positioning pins 204 are in place, the compressed air is cut off. The spring inside the first chuck mechanism 101 pushes the piston and steel ball, locking the first positioning pins 204, thereby fixing the box structure 2 to the base 1. Because the zero-point positioning chuck has a self-locking characteristic, it remains locked even after the air supply is cut off, therefore the box structure 2 will not loosen during processing.

[0047] Finally, the working process of this fixture will be described below: After fixing the square box structure 2, which contains the workpiece, to the base 1, the horizontal machining center is started. The machine tool spindle drives the cutting tool to rotate, and the workpiece is cut according to the preset machining program. During the machining process, the rotary table of the machine tool can drive the entire fixture to rotate around the vertical axis, so that different faces of the square box 202 are sequentially facing the spindle, thereby realizing the machining of workpieces on different faces. Specifically, when the rotary table is at the 0° position, the front face of the square box 202 faces the spindle, and the spindle machines the workpiece on the first clamping plate 3. After the workpiece on the first clamping plate 3 is machined, the rotary table rotates 90°, the first side face of the square box 202 faces the spindle, and the spindle machines the workpiece on the third clamping plate 5. And so on, the workpieces on the back and second side of the square box 202 are machined respectively. Through the indexing rotation of the rotary table, the workpieces on the front, back, first side and second side of the square box 202 can be machined in one clamping cycle.

[0048] Furthermore, the spindle of the horizontal machining center rises to continue machining the workpiece on the top surface of the housing 202.

[0049] After the cutting process is completed, the unloading and cycle steps are entered. Compressed air is introduced into the first chuck mechanism 101 to make the first chuck mechanism 101 unlocked. The entire square box structure 2 is removed and replaced with a new square box structure 2 with the workpiece fixed. The square box structure 2 is quickly fixed to the base 1 and the next processing cycle begins.

[0050] During continuous cutting operations on a machine tool, operators can disassemble the finished workpiece and re-clamp new blank workpieces. Meanwhile, multiple clamping plates can be directly fixed to the worktable of the vertical machining center. The worktable of the vertical machining center is also equipped with a base 1. The clamping plates can be quickly fixed to the base 1 by means of a chuck mechanism and positioning pins. The workpieces clamped on the clamping plates can be processed, thereby expanding the production capacity of the vertical machining center and enabling secondary swaying machining of the flexible vertical machining center.

[0051] Compared with traditional fixtures in the prior art that can only mount a single workpiece, the multi-station machining fixture described in the above specific embodiments has the following significant advantages: First, traditional fixtures can only clamp one workpiece at a time, requiring machine downtime for disassembly and re-clamping after each machining operation, resulting in long auxiliary times and low equipment utilization. This fixture, however, utilizes five clamping plates—a first clamping plate 3, a second clamping plate 4, a third clamping plate 5, a fourth clamping plate 6, and a fifth clamping plate 7—on the front, back, first side, second side, and top surfaces of the square box 202, allowing for the clamping of multiple workpieces simultaneously on a single fixture. Compared to traditional single-workpiece fixtures, this significantly reduces workpiece changeovers and non-cutting auxiliary time, fundamentally solving the timing bottleneck problem inherent in single-machine, single-workpiece machining. It is particularly suitable for batch production scenarios, improving overall equipment utilization.

[0052] Second, each clamping plate is connected to the square box 202 through an independent chuck mechanism. Each clamping plate can be disassembled and replaced individually without affecting the locking status of other clamping plates. While ensuring positional accuracy and connection rigidity, modular quick-change at the component level is achieved.

[0053] Third, each clamping plate of this fixture has multiple threaded holes arranged in an array on its outer side, which can adapt to the installation requirements of workpieces of different sizes and shapes. Operators can flexibly select the position of the threaded holes according to the specific structure of the workpiece to be processed and fix the workpiece with fasteners.

[0054] Fourth, in this fixture, since each clamping plate is connected to the square box 202 via an independent zero-point pneumatic chuck, the operator can disassemble the workpiece from the completed machining fixture and replace it with a new blank while the machine tool is performing continuous cutting, waiting for the next transport, thus realizing parallel operation of machining and loading / unloading. This cyclical operation mode effectively shortens machine tool waiting time, significantly reduces manual idle time in mass production, and further improves the overall efficiency of mass production.

[0055] Fifth, this fixture, by mounting the base 1 on the rotary table of a horizontal machining center, utilizes the indexing rotation of the rotary table around the vertical axis (0°, 90°, 180°, 270°) to sequentially align the front, first side, back, and second side of the square box 202 with the horizontal spindle, completing the machining of all workpieces on the four mounting surfaces. It also raises the spindle height to machine workpieces mounted on the top surface of the square box 202. The clamping plate in this machining fixture can also be used in vertical machining centers for machining workpieces, and can also be used for supplementary machining of workpieces requiring secondary swivel machining.

[0056] In the description of this invention, it should be noted that the terms "upper" and "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0057] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Furthermore, in the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0058] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-station machining fixture, characterized in that, It includes a base (1), a box structure (2), and at least two clamping plates; the box structure (2) is mounted on the base (1), the box structure (2) includes a box body (202), the box body (202) has multiple mounting surfaces; the two clamping plates are detachably mounted on any two mounting surfaces of the box body (202); the clamping plates are used to mount the workpiece to be processed.

2. The multi-station machining fixture according to claim 1, characterized in that, The mounting plate is provided with five, and the multiple mounting surfaces are the front, back, first side, second side and top surface of the square box (202); The five clamping plates are respectively installed on the front, back, first side, second side and top surface of the box body (202).

3. A multi-station machining fixture according to claim 2, characterized in that, At least two chuck mechanisms are installed on the front, back, first side, second side and top surfaces of the box body (202), and the clamping plate is provided with positioning pins that correspond one-to-one with the chuck mechanisms.

4. A multi-station machining fixture according to claim 3, characterized in that, The box structure (2) includes a base plate (201), the box body (202) is disposed on the base plate (201), the base (1) is provided with at least two chuck mechanisms, and the bottom surface of the base plate (201) is provided with positioning pins corresponding to the chuck mechanisms.

5. A multi-station machining fixture according to claim 3 or 4, characterized in that, The chuck mechanism is a zero-point pneumatic chuck.

6. A multi-station machining fixture according to any one of claims 1-4, characterized in that, The clamping plate is provided with multiple threaded holes for mounting the workpiece to be processed.

7. A multi-station machining fixture according to claim 2, characterized in that, A chuck mechanism is provided at each of the four corners of the front and the four corners of the back of the box body (202).

8. A multi-station machining fixture according to claim 2, characterized in that, Two chuck mechanisms are respectively provided on the first side, the second side and the top surface of the box body (202).

9. A multi-station machining fixture according to claim 4, characterized in that, The surface of the box body (202) is provided with mounting holes corresponding to the chuck mechanism, and the chuck mechanism is installed in the mounting holes; the box structure (2) is provided with a vertically arranged inner hole (205), the inner hole (205) penetrates the bottom plate (201) and is connected to the mounting holes.

10. A multi-station machining fixture according to claim 1, characterized in that, The base (1) is used to be installed on the rotary table of the machine tool, and the base (1) is provided with at least one mounting through hole.

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