Zero-point clamp interlocking four-axis square box

Abstract

The application relates to the technical field of four-axis square boxes, in particular to a zero-point clamp interlocking four-axis square box, positioning convex columns are plugged and connected in clamping holes, positioning grooves are arranged on the side surfaces of the positioning convex columns, adjusting holes are arranged in the central surfaces of shells, and the clamping holes are equidistantly distributed around the adjusting holes; knobs are rotationally connected in the adjusting holes, the knobs extend into the shells and coaxially fix first tooth rings; each clamping hole coaxially matches a synchronous positioning mechanism, the knobs drive the first tooth rings to rotate, the first tooth rings drive the second tooth rings and inner rings to rotate, the pin shafts slide along the spiral guide grooves, the positioning pieces slide to the inner sides of the fixing rings along the sliding grooves, the limiting arc plates are embedded in the limiting grooves, linkage locking of single zero-point clamps and multiple positioning convex columns is realized, and rapid assembly is realized.

Description

Technical Field

[0001] This invention relates to the field of four-axis square box technology, specifically to a zero-point clamp interlocking four-axis square box. Background Technology

[0002] A four-axis square box is an auxiliary tool used for positioning and clamping during machining, inspection, or assembly. It is usually made of high-quality cast iron. A zero-point fixture is a fixture with a standardized zero-point interface. All fixtures based on the zero-point system are matched with this interface to achieve quick installation and disassembly, save clamping time, and improve production efficiency. The four-axis square box and the zero-point fixture can be used together to enable simultaneous machining of multiple workpieces and quick change of the corresponding work fixtures.

[0003] A typical four-axis square box structure includes a box body, a zero-point fixture, and a working fixture. The box body usually has multiple clamping surfaces. Common four-axis square boxes are cuboid in shape; one surface is mounted on a four-axis flange, while the other five are clamping surfaces. The surface opposite the four-axis flange can rotate 360 ​​degrees with the flange for machining, while the other four surfaces can rotate to different orientations, enabling simultaneous machining of multiple products at multiple workstations. The zero-point fixture is fixed to the clamping surface connected to the box body. The working fixture can be pre-attached to its back with an assembly plate. The assembly plate is a standard design that mates with the zero-point fixture. The working fixture and the assembly plate are connected by bolts, allowing for the loading of the working fixture. Figure 11 The diagram illustrates the connection method of the four-axis square box body, zero-point fixture, and working fixture in the prior art. The square box and the zero-point fixture are connected by bolts, and the assembly plate and the working fixture are pre-connected by bolts. The assembly plate is fixed to the zero-point fixture by bolts. The entire assembly process requires fixing multiple bolts, and it is quite cumbersome to replace and assemble the zero-point fixture and the working fixture. Summary of the Invention

[0004] I. Technical problems to be solved

[0005] The purpose of this invention is to provide a zero-point fixture interlocking four-axis square box, which enables rapid assembly of zero-point fixtures and replacement of working fixtures, thereby improving production efficiency.

[0006] II. Technical Solution

[0007] The present invention is achieved through the following technical solution:

[0008] This invention proposes a zero-point clamp interlocking four-axis square box, comprising a square box body having multiple clamping surfaces, each clamping surface being fitted with a zero-point clamp, each zero-point clamp being fitted with an assembly plate, the assembly plate being fixed to the back side of a working clamp, and each clamping surface having at least three positioning protrusions fixed thereon; the zero-point clamp includes a housing, the housing having multiple clamping holes through which a plurality of corresponding positioning protrusions are formed, the positioning protrusions being inserted and pulled into the clamping holes, the side of the positioning protrusions having positioning grooves, and an adjustment hole having an adjustment hole in the center of the housing surface, the clamping holes being equidistantly distributed around the adjustment hole;

[0009] A knob is rotatably connected inside the adjustment hole, and the knob extends into the housing and is coaxially fixed with a first gear ring.

[0010] Each of the clamping holes is coaxially fitted with a synchronous positioning mechanism. The synchronous positioning mechanism includes a fixing ring, a second gear ring, and multiple positioning elements. The fixing ring is coaxially fixed inside the housing with the clamping hole. Multiple sliding grooves are radially formed on the surface of the fixing ring. The positioning elements are slidably connected to the sliding grooves.

[0011] The inner ring is coaxially fixed to the inner side of the second gear ring. The inner ring has an arc-shaped groove through it. The arc-shaped groove extends in an inclined radial shape with one end close to the inner side of the inner ring and the other end close to the outer side of the inner ring. The positioning member includes at least a pin that is slidably connected to the arc-shaped groove. The second gear ring is meshed with the first gear ring.

[0012] The positioning protrusion passes through the fixing ring. When the second gear ring rotates, the positioning member slides along the groove into the fixing ring and is fitted into the positioning groove.

[0013] Furthermore, the positioning component includes a slider part that is slidably connected to the slide groove, a limiting arc plate that is fixedly connected to the end of the slider part, and a pin that is fixed to the surface of the slider part. The slider part is slidably connected to the slide groove, and the limiting arc plate can slide and fit into the positioning groove.

[0014] Furthermore, the arc-shaped groove is arc-shaped, and the extension direction of its center line is tangent to both the inner and outer edges of the inner ring.

[0015] Furthermore, the surface of the housing is provided with multiple mounting holes, and a sleeve is coaxially rotatably connected to each mounting hole. A third gear ring is coaxially fixedly connected to the outside of the sleeve, and the third gear ring meshes with the second gear ring. Multiple spiral guide grooves are evenly formed around the inner wall of the sleeve. A positioning post coaxial with the sleeve is provided inside the sleeve. Multiple sliding protrusions are fixed on the side of the positioning post, and the sliding protrusions are slidably connected to the spiral guide grooves. A limit groove is formed on the surface of the positioning post along the axial direction. A limit protrusion is fixed on the inner wall of the mounting hole and slidably connected to the limit groove. The positioning post is engaged with a positioning hole pre-drilled on the back of the assembly plate.

[0016] Furthermore, the upper and lower surfaces of the assembly plate are respectively provided with insertion holes that communicate with the positioning holes. Movable handles are provided on the upper and lower sides of the assembly plate. The surface of the movable handles is fixedly connected with a pin that is plugged and pulled into the insertion hole. A pin hole is provided on the side wall of the positioning post. The end of the pin extends into the positioning hole and can be plugged and pulled into the pin hole to fix the positioning post.

[0017] Furthermore, a guide groove is vertically provided on the back of the assembly plate, and a guide rod that is slidably connected to the guide groove is fixed on the surface of the movable handle. A spring is fixedly connected between the end of the guide rod and the bottom surface of the guide groove.

[0018] Furthermore, the upper and lower surfaces of the assembly plate are provided with fitting grooves that fit into the movable handle.

[0019] Furthermore, multiple bearing seats are fixed inside the housing, and a rotating shaft is coaxially fixed to the inner end of the sleeve and the inner side of the knob. The rotating shaft is rotatably connected to the bearing seats.

[0020] III. Beneficial Effects

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] 1. In this invention, the clamping hole of the zero-point fixture is aligned with the positioning protrusion and inserted. Rotating the knob causes the first gear ring to rotate, which in turn rotates the second gear ring and the inner ring, causing the pin to slide along the spiral guide groove. The positioning component slides along the slide groove towards the inside of the fixed ring, and the limiting arc plate is fitted into the limiting groove, achieving linkage locking of a single zero-point fixture and multiple positioning protrusions for rapid assembly. Pulling open the movable handle, aligning the positioning hole behind the assembly plate with the positioning pin, and inserting it, releases the movable handle. Under the action of the spring tension, the movable handle returns to its original position, and the pin passes through the insertion hole and is inserted into the pin hole, thereby locking the positioning pin and assembling the working fixture. Therefore, this invention can quickly assemble the zero-point fixture and the working fixture, improving production efficiency when changing the working fixture.

[0023] 2. After the work fixture is assembled, the pin is inserted into the pin hole to lock the positioning post. The position of the positioning post is fixed and the sleeve is locked in the opposite direction. The sleeve locks the third gear, and then locks the second gear and the first gear, so that the synchronous positioning mechanism can also stably fix the positioning post, realizing the linkage locking of the square box body, zero point fixture and assembly plate, and improving the stability of clamping. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0025] Figure 2 This is a schematic diagram of the resulting square box body;

[0026] Figure 3This is a schematic diagram of the positioning protrusion;

[0027] Figure 4 This is a structural diagram of the zero-point fixture and the working fixture;

[0028] Figure 5 This is a partial sectional view of the zero-point fixture;

[0029] Figure 6 This is a schematic diagram of the internal structure of the zero-point fixture;

[0030] Figure 7 This is a schematic diagram of the synchronous positioning mechanism;

[0031] Figure 8 This is a structural schematic diagram of the positioning component;

[0032] Figure 9 This is a schematic diagram of the structure of the sleeve and the positioning post.

[0033] Figure 10 This is a structural diagram of the assembly panel;

[0034] Figure 11 This is a schematic diagram of the shell structure;

[0035] Figure 12 This is a structural schematic diagram of an existing four-axis box;

[0036] 1. Square box body; 1.1. Clamping surface; 1.2. Positioning protrusion; 1.2.1. Positioning groove;

[0037] 2. Zero-point fixture;

[0038] 2.1 Housing; 2.1.1 Clamping hole; 2.1.2 Adjustment hole; 2.1.3 Mounting hole; 2.1.4 Limiting protrusion; 2.1.5 Bearing seat;

[0039] 2.2 Knob;

[0040] 2.3, First gear ring;

[0041] 2.4 Synchronous positioning mechanism;

[0042] 2.4.1, Fixing ring; 2.4.1.1, Sliding groove;

[0043] 2.4.2, Second gear ring;

[0044] 2.4.3 Positioning component; 2.4.3.1 Slider section; 2.4.3.2 Limiting arc plate; 2.4.3.3 Pin;

[0045] 2.4.4 Inner ring; 2.4.4.1 Arc-shaped groove;

[0046] 2.5. Sleeve; 2.5.1. Spiral guide groove;

[0047] 2.6 Third gear ring;

[0048] 2.7 Positioning pin; 2.7.1 Sliding protrusion; 2.7.2 Limiting groove; 2.7.3 Pin hole;

[0049] 2.8 Rotating shaft;

[0050] 3. Assembly plate; 3.1. Positioning holes; 3.2. Insertion holes; 3.3. Guide grooves; 3.4. Fitting grooves;

[0051] 4. Movable handle; 4.1 Pin; 4.2 Guide rod;

[0052] 5. Spring;

[0053] 6. Working fixtures. Detailed Implementation

[0054] The four-axis square box is used in machining to achieve multi-face machining operations in a single clamping, increasing the flexibility of the machine tool. Its basic structure includes a square box body 1 with multiple clamping surfaces 1.1. Each clamping surface 1.1 is connected to a zero-point fixture 2, and each zero-point fixture 2 is connected to an assembly plate 3. The assembly plate 3 is pre-fixed to the back of a working fixture 6 using bolts or other fixing methods. The working fixture 6 is used to clamp the workpiece, and it can be configured with different shapes as needed. The assembly plate 3 and the working fixture 6 are fixedly connected to the zero-point fixture 2 using pins, bolts, and other fasteners, allowing for easy replacement of the working fixture 6. The zero-point fixture 2 and the assembly plate 3 are prefabricated standard parts, forming a unified system for convenient replacement of the working fixture 6.

[0055] In the existing technology, the connection between the zero-point clamp 2 and the square box body 1, as well as the connection between the zero-point clamp 2 and the assembly plate 3, requires multiple bolts to be connected one by one, which takes a long time and cannot be assembled quickly.

[0056] Based on this, the present invention proposes a zero-point clamp 2-interlock four-axis square box;

[0057] Please see Figure 2-3 At least three positioning protrusions 1.2 are fixed on each clamping surface 1.1 of the square box body 1, preferably four positioning protrusions 1.2 distributed in a rectangular shape, and positioning grooves 1.2.1 are opened on the side of the positioning protrusions 1.2; please refer to Figure 1 , 45. The zero-point fixture 2 includes a housing 2.1. The housing 2.1 has multiple clamping holes 2.1.1 that correspond one-to-one with the positioning protrusions 1.2. The positioning protrusions 1.2 are inserted and pulled into the clamping holes 2.1.1. The housing 2.1 has an adjustment hole 2.1.2 in the center of its surface. The clamping holes 2.1.1 are equidistant from the adjustment hole 2.1.2, that is, the center distance between each clamping hole 2.1.1 and the adjustment hole 2.1.2 is equal.

[0058] A knob 2.2 is rotatably connected inside the adjustment hole 2.1.2. A bearing seat 2.1.5 is fixed inside the housing 2.1. The knob 2.2 extends into the housing 2.1. A rotating shaft 2.8 is coaxially fixed to the inner end face of the knob 2.2. The rotating shaft 2.8 is rotatably connected to the bearing seat 2.1.5. A first gear ring 2.3 is coaxially fixed to the part of the knob 2.2 located in the housing 2.1.

[0059] In this invention, each clamping hole 2.1.1 is coaxially connected to a synchronous positioning mechanism 2.4. Please refer to [link / reference]. Figure 7 The synchronous positioning mechanism 2.4 and the knob 2.2 drive the first gear ring 2.3 to quickly fix the positioning protrusion 1.2 inserted into the clamping hole 2.1.1 in a synchronous linkage.

[0060] Please refer to the structure of the synchronous positioning mechanism 2.4. Figure 7 It includes a retaining ring 2.4.1, a second gear ring 2.4.2, and multiple positioning elements 2.4.3. The retaining ring 2.4.1 is coaxially fixed within the housing 2.1 and the clamping hole 2.1.1. Multiple radially spaced grooves 2.4.1.1 are formed on the surface of the retaining ring 2.4.1. (See also...) Figure 8 The positioning component 2.4.3 includes a slider part 2.4.3.1 that is slidably connected to the slide groove 2.4.1.1, a limiting arc plate 2.4.3.2 that is fixedly connected to the end of the slider part 2.4.3.1, and a pin 2.4.3.3 that is fixed to the surface of the slider part 2.4.3.1. The slider part 2.4.3.1 is slidably connected to the slide groove 2.4.1.1 and can move radially along the fixing ring 2.4.1.

[0061] The inner ring 2.4.4 is coaxially fixed to the inner side of the second gear ring 2.4.2. The inner ring 2.4.4 has an arc-shaped groove 2.4.4.1 through it. The pin 2.4.3.3 is slidably connected to the arc-shaped groove 2.4.4.1. The second gear ring 2.4.2 is meshed with the first gear ring 2.3. The rotation of the first gear ring 2.3 can synchronously drive multiple second gear rings 2.4.2 to rotate synchronously.

[0062] Among them, the arc-shaped groove 2.4.4.1 extends in an inclined radial shape with one end close to the inner side of the inner ring 2.4.4 and the other end close to the outer side of the inner ring 2.4.4. When the second gear ring 2.4.2 rotates, it can drive the inner ring 2.4.4 to rotate synchronously. The inner ring 2.4.4 drives the pin 2.4.3.3 to slide along the arc-shaped groove 2.4.4.1, which can change the distance between the pin 2.4.3.3 and the central axis of the second gear ring 2.4.2, so that the pin 2.4.3.3 slides synchronously in the slide groove 2.4.1.1.

[0063] As one implementation method, such as Figure 7 As shown, the arc groove 2.4.4.1 is arc-shaped, and the extension direction of its center line is tangent to both the inner and outer edges of the inner ring 2.4.4, which facilitates sliding.

[0064] When assembling the zero-point fixture 2, align the clamping hole 2.1.1 of the zero-point fixture 2 with the positioning protrusion 1.2 on the square box body 1. The positioning protrusion 1.2 passes through the fixing ring 2.4.1. At this time, rotate the knob 2.2. The knob 2.2 drives the first gear ring 2.3 to rotate. The first gear ring 2.3 drives the second gear ring 2.4.2 and the inner ring 2.4.4 to rotate synchronously. The inner ring 2.4.4 drives the pin 2.4.3.3 to slide. The pin 2.4.3.3 drives the positioning part 2.4.3 as a whole to slide inward along the slide groove 2.4.1.1 in the radial direction of the fixing ring 2.4.1. The limiting arc plate 2.4.3.2 then slides and fits into the positioning groove 1.2.1 of the positioning protrusion 1.2, thereby realizing the synchronous fixing of multiple positioning protrusions 1.2. Compared with the traditional method of fixing the zero-point clamp 2 to the box body 1 with bolts, rapid assembly can be achieved by rotating the knob 2.2 and fixing multiple positioning protrusions 1.2.

[0065] Among them, the insertion depth of the limiting arc plate 2.4.3.2 in the positioning groove 1.2.1 is greater than the thickness of the limiting arc plate 2.4.3.2, so that the limiting arc plate 2.4.3.2 has a certain compensation margin after being fitted. When the knob is slightly loosened, the limiting arc plate 2.4.3.2 is still fitted in the positioning groove 1.2.1, maintaining the locking of the positioning protrusion 1.2.

[0066] In this embodiment, the surface of the housing 2.1 is also provided with a plurality of mounting holes 2.1.3. A sleeve 2.5 is coaxially rotatably connected in the mounting holes 2.1.3. A bearing seat 2.1.5 is fixed inside the housing 2.1. The inner end of the sleeve 2.5 is closed and a rotating shaft 2.8 is coaxially fixedly connected to its inner end. The rotating shaft 2.8 is rotatably connected to the bearing seat 2.1.5. Please refer to [link to previous document]. Figure 9A third gear ring 2.6 is coaxially fixedly connected to the outside of the sleeve 2.5. The third gear ring 2.6 meshes with the second gear ring 2.4.2. The first gear ring 2.3 drives the second gear ring 2.4.2 to rotate, and the second gear ring 2.4.2 drives the third gear ring 2.6 to rotate. The third gear ring 2.6 can drive the sleeve 2.5 to rotate synchronously.

[0067] Multiple spiral guide grooves 2.5.1 are evenly formed around the inner wall of the sleeve 2.5. A positioning post 2.7 is installed inside the sleeve 2.5, coaxially arranged with the sleeve 2.5. Multiple sliding protrusions 2.7.1 are fixed on the side of the positioning post 2.7, each corresponding to and slidably connected to a bolt guide groove. A limit groove 2.7.2 is formed axially on the surface of the positioning post 2.7. Please refer to [reference missing]. Figure 11 A limiting protrusion 2.1.4 is fixed on the inner wall of the mounting hole 2.1.3, and the limiting protrusion 2.1.4 is slidably connected to the limiting groove 2.7.2;

[0068] Please see Figure 10 On the back of the assembly plate 3, a positioning hole 3.1 is provided, and the positioning post 2.7 is connected to the positioning hole 3.1. Specifically, on the upper and lower surfaces of the assembly plate 3, insertion holes 3.2 communicating with the positioning holes 3.1 are respectively provided. Movable handles 4 are provided on the upper and lower sides of the assembly plate 3. Pins 4.1 are fixedly connected to the surface of the movable handles 4. Pins 4.1 are inserted and pulled into the insertion holes 3.2. The diameter of pins 4.1 is equal to the diameter of the insertion hole 3.2 so that they can fit tightly. A pin hole 2.7.3 is provided on the side wall of the positioning post 2.7. The diameter of the pin hole 2.7.3 is the same as that of the positioning hole 3.1. The end of the pin 4.1 is long enough to extend into the positioning hole 3.1. The positioning post 2.7 is inserted into the positioning hole 3.1. The pin hole 2.7.3 is coaxial with the insertion hole 3.2. At this time, the pin 4.1 can be inserted into the insertion hole 3.2. The end of the pin 4.1 is inserted into the pin hole 2.7.3 to fix the positioning post 2.7.

[0069] The back of the assembly plate 3 has a vertical guide groove 3.3. The upper and lower surfaces of the assembly plate 3 have fitting grooves 3.4 that fit into the movable handle 4. The surface of the movable handle 4 is fixed with a guide rod 4.1 that is slidably connected to the guide groove 3.3. A spring 5 is fixedly connected between the end of the guide rod 4.1 and the bottom surface of the guide groove 3.3. Pulling the movable handle 4 can drive the pin 4.1 out to the positioning hole 3.1. When the movable handle 4 is released, it returns to its original position under the pulling force of the spring 5. The movable handle 4 fits into the fitting groove 3.4, and the end of the pin 4.1 extends into the positioning hole 3.1.

[0070] The positioning hole 3.1 has a small hole that passes through the assembly plate 3. The working fixture 6 has a threaded hole that is coaxial with it. The bolt passes through the small hole and engages with the threaded hole. The assembly plate 3 and the working fixture 6 can be pre-connected and fixed. When the working fixture 6 needs to be changed, the assembly plate 3 can be connected to the zero-point fixture 2. Since the working fixture 6 is diverse, it needs to be prefabricated according to the shape of the part to be processed. The assembly plate 3 is a standard shape that is fixedly matched with the zero-point fixture 2, which can realize the rapid prefabrication of diverse working fixtures 6 and simplify the manufacturing process of the working fixture 6.

[0071] When loading the zero-point fixture 2, rotating knob 2.2 will cause the first gear ring 2.3 to drive the second gear ring 2.4.2 to rotate. The second gear ring 2.4.2 simultaneously drives the third gear ring 2.6 to rotate, which in turn drives the sleeve 2.5 to rotate. This causes the sliding protrusion 2.7.1 to slide along the spiral guide groove 2.5.1. Because the limiting protrusion 2.1.4 slides within the limiting groove 2.7.2, it restricts the rotation of the positioning post 2.7. The positioning post 2.7 can only move outward along its axial direction. When knob 2.2 is rotated to the correct position, the positioning post 2.7 is fixed, and the loading of the zero-point fixture 2 is complete. The positioning post 2.7... It also slides axially to the farthest assembly position. At this time, the positioning hole 3.1 of the assembly plate 3 behind the working fixture 6 is aligned with the positioning pin 2.7 and inserted. Pull the movable handle 4 to pull the pin 4.1 out of the positioning hole 3.1. When the positioning pin 2.7 is inserted to the bottom, the pin hole 2.7.3 is exactly coaxial with the insertion hole 3.2 of the assembly plate 3. Release the movable handle 4, and the pin 4.1 passes through the insertion hole 3.2 and is inserted into the pin hole 2.7.3, thereby fixing the loading plate to the zero point fixture 2 and realizing the loading of the working fixture 6. Conversely, pull the movable handle 4 and pull it outward to disassemble the working fixture 6.

[0072] Throughout the assembly process, when assembling the zero-point fixture 2, only one knob 2.2 needs to be turned for quick assembly; when assembling the working fixture 6, continue pulling the movable handle 4 for quick assembly. The assembly process is quick and easy, requiring no multiple bolts for fixation, making it convenient and fast. Furthermore, after the knob 2.2 is rotated to its final position, the positioning pin 2.7 extends sufficiently and is inserted into the positioning hole 3.1 to the bottom. Only then can the pin hole 2.7.3 be located directly below the insertion hole 3.2 and coaxially aligned, allowing the pin 4.1 to be inserted into the pin hole 2.7.3. Therefore, when clamping the assembly plate 3, if the pin 4.1 cannot be directly inserted into the pin hole 2.7.3, it indicates that the zero-point fixture 2 is loose. This allows for reverse verification of whether the zero-point fixture 2 is properly assembled, achieving a self-inspection of the zero-point fixture 2 assembly. This avoids the problem of insufficient assembly accuracy caused by the bolts loosening during long-term use of traditional zero-point fixtures 2. Meanwhile, when assembling the work fixture 6, the pin 4.1 is inserted into the pin hole 2.7.3 to lock the positioning pin 2.7. The positioning pin 2.7 is fixed in position and the sleeve 2.5 is locked in the opposite direction. The sleeve 2.5 locks the third gear, and then locks the second gear and the first gear, so that the synchronous positioning mechanism 2.4 can also stably fix the positioning pin 2.7, realizing the linkage locking of the square box body 1, the zero point fixture 2, and the assembly plate 3.

[0073] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the inventive concept should fall within the protection scope of the present invention. All technical contents for which protection is sought in this invention are fully described in the claims.

Claims

1. A zero-point clamp interlocking four-axis square box, comprising a square box body, the square box body having multiple clamping surfaces, each clamping surface being fitted with a zero-point clamp, each zero-point clamp being fitted with an assembly plate, the assembly plate being fixed to the back side of a working fixture, characterized in that: At least three positioning protrusions are fixed on each of the clamping surfaces; the zero-point fixture includes a housing, on which a plurality of clamping holes corresponding one-to-one with the positioning protrusions are opened through, the positioning protrusions are inserted and pulled into the clamping holes, the side of the positioning protrusions is provided with positioning grooves, and an adjustment hole is provided in the center of the surface of the housing, and the clamping holes are equidistantly distributed around the adjustment hole. A knob is rotatably connected inside the adjustment hole, and the knob extends into the housing and is coaxially fixed with a first gear ring. Each of the clamping holes is coaxially fitted with a synchronous positioning mechanism. The synchronous positioning mechanism includes a fixing ring, a second gear ring, and multiple positioning elements. The fixing ring is coaxially fixed inside the housing with the clamping hole. Multiple sliding grooves are radially formed on the surface of the fixing ring. The positioning elements are slidably connected to the sliding grooves. The inner ring is coaxially fixed to the inner side of the second gear ring. The inner ring has an arc-shaped groove through it. The arc-shaped groove extends in an inclined radial shape with one end close to the inner side of the inner ring and the other end close to the outer side of the inner ring. The positioning member includes at least a pin that is slidably connected to the arc-shaped groove. The second gear ring is meshed with the first gear ring. The positioning protrusion passes through the fixing ring. When the second gear ring rotates, the positioning member slides along the groove into the fixing ring and is fitted into the positioning groove. The surface of the housing is also provided with multiple mounting holes. A sleeve is coaxially rotatably connected to the mounting holes. A third gear ring is coaxially fixedly connected to the outside of the sleeve. The third gear ring meshes with the second gear ring. Multiple spiral guide grooves are evenly opened circumferentially on the inner wall of the sleeve. A positioning post coaxial with the sleeve is provided inside the sleeve. Multiple sliding protrusions are fixed on the side of the positioning post. The sliding protrusions are slidably connected to the spiral guide grooves. A limit groove is opened axially on the surface of the positioning post. A limit protrusion is fixed on the inner wall of the mounting hole and slidably connected to the limit groove. The positioning post is engaged with a positioning hole pre-drilled on the back of the assembly plate.

2. The zero-point clamp interlocking four-axis square box according to claim 1, characterized in that: The positioning component includes a slider part that is slidably connected to the slide groove, a limiting arc plate that is fixedly connected to the end of the slider part, and a pin that is fixed to the surface of the slider part. The slider part is slidably connected to the slide groove, and the limiting arc plate can slide and fit into the positioning groove.

3. A zero-point clamp interlocking four-axis square box according to claim 1, characterized in that: The arc-shaped groove is arc-shaped, and the extension direction of its center line is tangent to both the inner and outer edges of the inner ring.

4. A zero-point clamp interlocking four-axis square box according to claim 1, characterized in that: The upper and lower surfaces of the assembly plate are respectively provided with insertion holes that communicate with the positioning holes. Movable handles are provided on the upper and lower sides of the assembly plate. The surface of the movable handles is fixedly connected with a pin that is plugged and pulled into the insertion hole. A pin hole is provided on the side wall of the positioning post. The end of the pin extends into the positioning hole and can be plugged and pulled into the pin hole to fix the positioning post.

5. A zero-point clamp interlocking four-axis square box according to claim 4, characterized in that: A guide groove is vertically provided on the back of the assembly plate. A guide rod that is slidably connected to the guide groove is fixed on the surface of the movable handle. A spring is fixedly connected between the end of the guide rod and the bottom surface of the guide groove.

6. A zero-point clamp interlocking four-axis square box according to claim 5, characterized in that: The upper and lower surfaces of the assembly plate are provided with fitting grooves that fit into the movable handle.

7. The zero-point clamp interlocking four-axis square box according to claim 1, characterized in that: Multiple bearing seats are fixed inside the housing. Rotating shafts are coaxially fixed to the inner end of the sleeve and the inner side of the knob. The rotating shafts are rotatably connected to the bearing seats.

Images