Modularized clamping device and method for large workpiece machining

Abstract

The invention discloses a modularized clamping device and method for large workpiece machining. The modularized clamping device comprises a plurality of pressing clamps arranged on the side edge of a workpiece, a plurality of side pushing clamps and a plurality of supporting pad clamps arranged below the workpiece. The pressing clamp comprises a supporting seat, a supporting plate arranged on one side of the supporting seat, a lifting machine hinged to the supporting plate and a pressing arm hinged to the free end of the supporting seat, one end of the pressing arm is connected with a pressing seat, and the side pushing clamp comprises a first supporting seat, a second supporting seat arranged on the top of the first supporting seat and a side pushing assembly arranged on the top of the second supporting seat. The supporting pad clamp comprises a base, a lifting rod arranged at the top of the base and a lifting head arranged at the free end of the lifting rod, and the lifting rod extends out of the top of the base; free combination can be conducted according to the shape and size of a workpiece needing to be clamped, the position of the workpiece is adjusted in the clamping process, machining and clamping of workpieces of different sizes are achieved through combination of the modules in different modes, and therefore the clamping efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of large workpiece tooling, and in particular relates to a modular clamping device and method for large workpiece processing. Background Art

[0002] Most of the key structural parts in heavy machinery equipment, such as the trolley frame of industrial cranes and the crawler frame of mining excavators, are single-piece and small-batch produced with large differences in structural characteristics. The size of these workpieces is usually greater than 10m and the weight is usually more than 10t. When they are processed and clamped on a machine tool, the usual hydraulic and pneumatic clamps are special tooling fixtures with a small adjustable range, which makes it difficult to apply them to the processing of workpieces of different products and different sizes.

[0003] In the prior art, large workpieces are usually fixed by Figure 1 In the method shown, the long screw 100, the nut 200, the pressure plate 300, the jack 400 and the square box 500 are used for clamping. When clamping, the workpiece is placed on the square box 500, and the position of the workpiece is adjusted by lifting with a crane. After the position is adjusted, the jack 400 is adjusted to a suitable height, and the workpiece is clamped by the principle of leverage. Since the weight of the processed structural parts is large and the structural parts have dimensional deviations due to manufacturing reasons, this traditional tooling fixture needs to use a crane and a jack 400 to adjust and align the position of the workpiece during clamping, and then fix it for clamping. The operation process is cumbersome. In summary, there is an urgent need for a modular clamping device and method for large workpiece processing. Summary of the invention

[0004] In order to solve part or all of the technical problems existing in the above-mentioned prior art, the present invention provides a modular clamping device and method for processing large workpieces.

[0005] On the one hand, the present invention provides a modular clamping device for large workpiece processing, wherein the modular clamping device is arranged on the workpiece and fixed above the workbench by fasteners, and is characterized in that the modular clamping device comprises a plurality of clamps and a plurality of side push clamps arranged on the side of the workpiece, and a plurality of support clamps arranged below the workpiece, wherein:

[0006] The clamping fixture comprises a support seat, a support plate arranged on one side of the support seat, an elevator hinged to the support plate, and a clamping arm hinged to the free end of the support seat, an adjusting bolt is arranged on the side of the elevator, one end of the clamping arm is connected to the clamping seat, and the other end is hinged to a push rod extending from the free end of the elevator, the push rod is connected to the adjusting bolt, and the extension and retraction of the push rod can be controlled by rotating the adjusting bolt, and a pull rod is also connected between the clamping seat and the clamping arm;

[0007] The side-pushing fixture comprises a first support, a second support arranged on the top of the first support, and a side-pushing assembly arranged on the top of the second support, the side-pushing assembly comprises a side-pushing head and an adjusting screw connected to each other, the extension and retraction of the side-pushing head can be controlled by rotating the adjusting screw, and the first support, the second support, and the side-pushing assembly are connected by the fastener;

[0008] The support clamp includes a base, a lifting rod arranged on the top of the base, and a lifting head arranged on the free end of the lifting rod. The lifting rod extends from the top of the base. An adjusting worm connected to the lifting rod is arranged on one side of the base. The lifting and lowering of the lifting rod can be controlled by rotating the adjusting worm.

[0009] As a specific implementation, in the above-mentioned modular clamping device for large workpiece processing, the number of the clamping clamps is 4 to 8, and the multiple clamping clamps are symmetrically distributed on both sides of the workpiece along the axis of the length direction of the workpiece, and the clamping seat abuts against the top of the workpiece.

[0010] As a specific implementation, in the above-mentioned modular clamping device for processing large workpieces, the number of the side push clamps is 2 to 4, and the multiple side push clamps are symmetrically distributed on both sides of the workpiece along the axis of the length direction of the workpiece, and the side push head abuts against the side of the workpiece.

[0011] As a specific implementation, in the above-mentioned modular clamping device for processing large workpieces, the number of the support clamps is 4 to 8, and the plurality of support clamps are symmetrically distributed at the bottom of the workpiece along the axis in the width direction of the workpiece, and the lifting head abuts against the bottom of the workpiece.

[0012] As a specific embodiment, in the above-mentioned modular clamping device for processing large workpieces, the support seat, the support support plate, the side push assembly, and the base are all provided with T-slots at the bottom, and the first support and the second support are both provided with T-slots at the top and bottom, and the T-slots match the fasteners.

[0013] As a specific implementation, in the above-mentioned modular clamping device for large workpiece processing, the first support and the second support are connected to each other below the support seat through the fastener.

[0014] As a specific implementation, in the above-mentioned modular clamping device for large workpiece processing, the first support and the second support are connected to each other below the base through the fastener.

[0015] Furthermore, in the above-mentioned modular clamping device for processing large workpieces, the T-slot is provided on the top of the workbench.

[0016] On the other hand, the modular clamping method for large workpiece processing provided by the present invention comprises:

[0017] Step 1: According to the size characteristics of the workpiece to be processed, the height of the support fixture is adjusted by increasing or decreasing the number of the second support at the bottom of the base, the support fixture is assembled, and a plurality of assembled support fixtures are fixed to the designated position on the workbench through the fasteners, and the workpiece is placed on the top of the support fixture through the lifting equipment, so that the lifting head is against the bottom end of the workpiece, the height deviation of the workpiece is detected by the measuring tool, and the adjusting worm is rotated with a wrench synchronously to raise and lower the lifting rod, thereby adjusting the height deviation of the workpiece until the processing requirements are met;

[0018] Step 2: According to the size characteristics of the workpiece to be processed, the height of the side push fixture is adjusted by increasing or decreasing the number of the second supports, and the side push fixture is assembled. Then, a plurality of the assembled side push fixtures are fixed to the specified position on the workbench through the fasteners, and the side push head is pressed against the end face of the workpiece. Then, the horizontal deviation of the workpiece is detected by a measuring tool, and the adjusting screw is rotated synchronously with a wrench to extend and retract the side push head, thereby adjusting the horizontal deviation of the workpiece until the processing requirements are met;

[0019] Step 3: According to the size characteristics of the workpiece to be processed, adjust the height of the clamping clamp by increasing or decreasing the number of the second supports at the bottom of the support seat, assemble the clamping clamp, and then fix the multiple assembled clamps to the specified position on the workbench through the fasteners, and press the bottom of the clamping seat against the top of the workpiece. Then, calculate the clamping force and use a wrench to rotate the adjusting bolt to extend and retract the push rod, thereby adjusting the clamping force in the vertical direction of the workpiece until the clamping force meets the processing requirements, thereby completing the clamping of the workpiece.

[0020] Furthermore, in the above-mentioned modular clamping method for large workpiece processing, when the workpiece to be processed again is the same as the workpiece processed last time, the clamping of the workpiece can be completed by repeating the above-mentioned steps 2 and 3 in sequence.

[0021] The modular clamping device and method for large workpiece processing of the present invention have the following advantages and positive effects:

[0022] (1) The present invention adopts modular clamping fixtures, side push fixtures, and support fixtures, which can be freely combined according to the shape and size of the workpiece to be clamped, and the position of the workpiece can be adjusted during the clamping process. The processing and clamping of workpieces of different sizes can be achieved through the combination of various modules in different ways, thereby improving the clamping efficiency, having good clamping accuracy and stability, good adaptability, simple structure, and convenient disassembly and assembly;

[0023] (2) In the present invention, the heights of the clamping clamp, the side push clamp, and the support clamp can be adjusted according to the size characteristics of the workpiece to be processed by increasing or decreasing the number of the first support or the second support at the bottom of the support seat, the bottom of the side push assembly, and the bottom of the base. This invention has good practicality and can match workpieces of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings in the following descriptions are only used to further understand the embodiments of the present invention and constitute a part of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0025] Figure 1 It is a clamping device for large workpieces in the prior art;

[0026] Figure 2 It is a structural schematic diagram of a clamping fixture in a modular clamping device for large workpiece processing of the present invention;

[0027] Figure 3 It is a structural schematic diagram of a side push fixture in a modular clamping device for large workpiece processing of the present invention;

[0028] Figure 4 It is a structural schematic diagram of a support clamp in a modular clamping device for large workpiece processing of the present invention;

[0029] Figure 5 This is a diagram showing the actual use of the modular clamping device of the present invention for large workpiece processing.

[0030] Description of reference numerals:

[0031] 1- clamping fixture, 11- support seat, 12- support support plate, 13- lifter, 14- clamping arm, 15- adjusting bolt, 16- clamping seat, 17- push rod, 18- pull rod, 2- side push fixture, 21- first support, 22- second support, 23- side push head, 24- adjusting screw, 3- support fixture, 31- base, 32- lifting rod, 33- lifting head, 34- adjusting worm, 4- workpiece, 100- long screw, 200- nut, 300- pressure plate, 400- jack, 500- square box. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0033] like Figures 1 to 5 As shown, the present invention provides a modular clamping device and method for processing large workpieces.

[0034] On the one hand, the present invention discloses a modular clamping device for processing large workpieces, which is arranged on the workpiece 4 and fixed above the workbench (not shown in the figure) by fasteners, and is characterized in that the modular clamping device includes a plurality of clamps 1 and a plurality of side push clamps 2 arranged on the side of the workpiece 4, and a plurality of support clamps 3 arranged below the workpiece 4, wherein the clamping clamp 1 includes a support seat 11, a support support plate 12 arranged on one side of the support seat 11, a lifter 13 hinged to the support support plate 12, and a clamping arm 14 hinged to the free end of the support seat 11, an adjusting bolt 15 is arranged on the side of the lifter 13, one end of the clamping arm 14 is connected to a clamping seat 16, and the other end is hinged to a push rod 17 extending from the free end of the lifter 13, the push rod 17 is connected to the adjusting bolt 15, and the adjusting bolt 15 is adjusted by rotating the adjusting bolt The bolt 15 can control the extension and retraction of the push rod 17. A pull rod 18 is also connected between the clamping seat 16 and the clamping arm 14. When the adjusting bolt 15 is rotated forward, the push rod 17 extends from the elevator 13, thereby driving the clamping arm 14 to rotate clockwise along the hinge point connected to the support seat 11. Through the connection of the pull rod 18, the clamping seat 16 is displaced vertically downward. When the adjusting bolt 15 is rotated reversely, the push rod 17 shrinks into the elevator 13, thereby driving the clamping arm 14 to rotate counterclockwise along the hinge point connected to the support seat 11. Through the connection of the pull rod 18, the clamping seat 16 is displaced vertically upward. The support seat 11 and the support support plate 12 can be fixed to the top of the workbench by fasteners. More specifically, the height of the clamping fixture 1 can be adjusted in the range of 225mm to 700mm, and the designed rated downward pressure is 2.5t to 3.5t; the side-pushing clamp 2 includes a first support 21, a second support 22 arranged on the top of the first support 21, and a side-pushing assembly arranged on the top of the second support 22. The side-pushing assembly includes a side-pushing head 23 and an adjusting screw 24 connected to each other. The extension and retraction of the side-pushing head 23 can be controlled by rotating the adjusting screw 24. When the adjusting screw 24 is rotated in the forward direction, the side-pushing head 23 extends forward, and when the adjusting screw 24 is rotated in the reverse direction, the side-pushing head 23 contracts backward. The first support 21, the second support 22, and the side-pushing assembly are connected by fasteners, and the first support 21 can be fixed to the top of the workbench by the fasteners. More specifically, the side-pushing height of the side-pushing clamp 2 can be adjusted in the range of 200mm to 700mm, and the designed rated lower side thrust is 4t to 6t. Of course, in actual use, the side-pushing height of the side-pushing clamp 2 can be adjusted by increasing or decreasing the number of the second supports 22. degree, so as to adapt to workpieces 4 of different heights; the support fixture 3 includes a base 31, a lifting rod 32 arranged on the top of the base 31, and a lifting head 33 arranged at the free end of the lifting rod 32. The lifting rod 32 extends from the top of the base 31. An adjusting worm 34 connected to the lifting rod 32 is arranged on one side of the base 31. The lifting and lowering of the lifting rod 32 can be controlled by rotating the adjusting worm 34. When the adjusting worm 34 is rotated forward, the lifting rod 32 extends from the base 31. When the adjusting worm 34 is rotated backward, the push rod 17 shrinks into the base 31. In actual use, the support fixture 3 is often set at the bottom of the four corners of the workpiece 4, which can more conveniently fine-tune the height of the workpiece 4. More specifically, the lifting height of the lifting head 33 in the support fixture 3 is 420mm~520mm, the designed rated lower lifting force is 0t~25t, and the lifting adjustment error is ≤0.10mm. .

[0035] As a specific embodiment, in the modular clamping device for large workpiece processing of the present invention, the number of clamping clamps 1 is 4 to 8, and the multiple clamping clamps 1 are symmetrically distributed on both sides of the workpiece 4 along the axis of the length direction of the workpiece 4, and the clamping seat 16 abuts against the top of the workpiece 4. More specifically, the number of clamping clamps 1 is 4, and two clamping clamps 1 are symmetrically distributed on one side of the workpiece 4, and the clamping clamps 1 are located at the four corners of the workpiece 4.

[0036] As a specific embodiment, in the modular clamping device for large workpiece processing of the present invention, the number of side push clamps 2 is 2 to 4, and the multiple side push clamps 2 are symmetrically distributed on both sides of the workpiece 4 along the axis of the length direction of the workpiece 4, and the side push head 23 abuts against the side of the workpiece 4. More specifically, the number of side push clamps 2 is 2, and two side push clamps 2 are symmetrically arranged on both sides of the workpiece 4, and the side push clamps 2 are located in the middle part of the length direction of the workpiece 4.

[0037] As a specific embodiment, in the modular clamping device for large workpiece processing of the present invention, the number of support clamps 3 is 4 to 8, and multiple support clamps 3 are symmetrically distributed at the bottom of the workpiece 4 along the width axis of the workpiece 4, and the lifting head 33 is against the bottom of the workpiece 4. More specifically, the number of support clamps 3 is 4, and a support clamp 3 is distributed at each of the four corners of the bottom of the workpiece 4.

[0038] As a specific embodiment, in the modular clamping device for large workpiece processing of the present invention, the support seat 11, the support support plate 12, the side push assembly, and the base 31 are all provided with T-slots at the bottom, and the first support 21 and the second support 22 are all provided with T-slots at the top and the bottom, and the T-slots match the fasteners, and the T-slots can be connected to each other by fasteners.

[0039] As a specific embodiment, in the modular clamping device for large workpiece processing of the present invention, a first support 21 and a second support 22 are connected to the support seat 11 through fasteners. Of course, the number of the first support 21 and the second support 22 arranged at the bottom of the support seat 11 needs to be set according to the specific working conditions such as the shape and size of the workpiece 4 during actual use.

[0040] As a specific embodiment, in the modular clamping device for large workpiece processing of the present invention, a first support 21 and a second support 22 are connected to the bottom of the base 31 by fasteners. Of course, the number of the first support 21 and the second support 22 arranged at the bottom of the base 31 needs to be set according to the specific working conditions such as the shape and size of the workpiece 4 during actual use.

[0041] Furthermore, in the modular clamping device for large workpiece processing of the present invention, a T-slot is provided on the top of the workbench, and the support seat 11, the support support plate 12, the first support 21, the second support 22, and the base 31 can all be fixed to the top of the workbench by fasteners and the T-slots.

[0042] On the other hand, the modular clamping method for large workpiece processing of the present invention is implemented using the above modular clamping device, specifically comprising the following steps:

[0043] Step 1: According to the size characteristics of the workpiece 4 to be processed, the support position of the support fixture 3 on the workpiece 4 is calculated, and the height of the support fixture 3 is adjusted by increasing or decreasing the number of the second support 22 at the bottom of the base 31, and the support fixture 3 is assembled. A plurality of assembled support fixtures 3 are fixed to the designated position on the workbench by fasteners, and the workpiece 4 is placed on the top of the support fixture 3 by a lifting device, so that the lifting head 33 is against the bottom end of the workpiece 4, and the height deviation of the horizontal waistline of the workpiece 4 is detected by a measuring tool, and the electric wrench is used to rotate the adjusting worm 34 synchronously to raise and lower the lifting rod 32, thereby adjusting the height deviation of the four corners of the workpiece 4 until the processing requirements are met;

[0044] Step 2: According to the size characteristics of the workpiece 4 to be processed, the required side-pushing height and placement position of the side-pushing fixture 2 are calculated respectively, and the height of the side-pushing fixture 2 is adjusted by increasing or decreasing the number of the second supports 22, and the side-pushing fixture 2 is assembled, and then a plurality of assembled side-pushing fixtures 2 are fixed to the specified position on the workbench by fasteners, and the side-pushing head 23 is pressed against the end face of the workpiece 4, and then the horizontal deviation of the workpiece 4, that is, the deviation between the center line of the workpiece 4 and the machine tool, is detected by a measuring tool, and the adjusting screw 24 is synchronously rotated with an electric wrench to extend and retract the side-pushing head 23, thereby adjusting the horizontal deviation of the workpiece 4, until the deviation between the center line of the workpiece 4 and the relative position of the machine tool meets the processing requirements;

[0045] Step 3: According to the size characteristics of the workpiece 4 to be processed, the height of the clamping clamp 1 is adjusted by increasing or decreasing the number of the second supports 22 at the bottom of the support seat 11, and the clamping clamp 1 is assembled. Thereafter, multiple assembled clamps 1 are fixed to the specified position on the workbench by fasteners, and the bottom of the clamping seat 16 is pressed against the top of the workpiece 4. Then, through the clamping force calculation, an electric wrench is used to rotate the adjusting bolt 15 to extend and retract the push rod 17, thereby adjusting the clamping force in the vertical direction of the workpiece 4 until the clamping force meets the processing requirements, thereby completing the clamping of the workpiece 4.

[0046] Furthermore, in the modular clamping method for large workpiece processing of the present invention, when the workpiece 4 to be processed again is the same as the workpiece 4 processed last time, the clamping of the workpiece 4 can be completed by repeating the above steps 2 and 3 in sequence.

[0047] As a specific embodiment, the calculation basis of the clamping force when the clamping fixture 1 is used is:

[0048] When the workpiece 4 to be processed is made of low-alloy high-strength steel and needs to be milled using a carbide tool, the maximum cutting parameters are as follows: cutting depth ap = 6 mm; feed rate f = 0.2 mm / tooth; milling cutter diameter D = 250 mm; number of milling cutter teeth Z = 16; spindle speed n = 300 r / min;

[0049] First, calculate the cutting force: calculate the cutting speed v = πDn / 1000 = π×250×300 / 1000 = 75π (mm / min); calculate the cutting force Fc according to the cutting force formula. For low-alloy high-strength steel, the cutting force coefficient can be referenced as Kc = 1800~2800N / mm 2 ; The cutting force calculation formula is: Fc=Kc×ap×f×z=2800×6×0.2×16=53760N, and then the clamping force is calculated: Determine the safety factor: Considering factors such as vibration and impact during the processing, the safety factor is S=2; The calculated clamping force Fj must be greater than or equal to the cutting force multiplied by the safety factor, that is, Fj≥Fc×S; so Fj≥53760×2=107520N, and finally the pressure under the tooling is calculated: The maximum clamping force required for the workpiece 4 is Fj=107520 / 9.8=10971.43 (kg)=10.97 (t); If a single clamping fixture 1 with a clamping force of 3t is used, the four clamping fixtures 1 have a total clamping force of 12t, and 12t>10.97t is obtained. It is judged that the use of four clamping fixtures 1 with a clamping force of 3t meets the clamping requirements.

[0050] In summary, compared with the prior art, the modular clamping device and method for large workpiece processing of the present invention has the following advantages and positive effects:

[0051] (1) The present invention adopts a modular clamping fixture 1, a side push fixture 2, and a support fixture 3, which can be freely combined according to the shape and size of the workpiece 4 to be clamped, and the position of the workpiece 4 can be adjusted during the clamping process. The processing and clamping of workpieces 4 of different sizes can be achieved through the combination of various modules in different ways, thereby improving the clamping efficiency, having good clamping accuracy and stability, good adaptability, simple structure, and convenient disassembly and assembly;

[0052] (2) In the present invention, the heights of the clamping fixture 1, the side push fixture 2, and the support fixture 3 can be adjusted according to the size characteristics of the workpiece 4 to be processed by increasing or decreasing the number of the first support 21 or the second support 22 at the bottom of the support seat 11, the bottom of the side push assembly, and the bottom of the base 31. This has good practicality and can match workpieces 4 of different sizes.

[0053] It should be noted that, in this article, unless otherwise clearly specified and limited, the term "connection" or its synonyms should be understood in a broad sense. For example, "connection" can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. Moreover, expressions such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. At the same time, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such a process, method, article or device. In addition, "front", "back", "left", "right", "upper" and "lower" in this article are all referenced to the placement state shown in the accompanying drawings.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A modular clamping device for processing large workpieces, the modular clamping device being arranged on the workpiece and fixed on the workbench by fasteners, characterized in that: The modular clamping device comprises a plurality of clamps and a plurality of side push clamps arranged on the side of the workpiece, and a plurality of support clamps arranged below the workpiece, wherein: The clamping fixture comprises a support seat, a support plate arranged on one side of the support seat, an elevator hinged to the support plate, and a clamping arm hinged to the free end of the support seat, an adjusting bolt is arranged on the side of the elevator, one end of the clamping arm is connected to the clamping seat, and the other end is hinged to a push rod extending from the free end of the elevator, the push rod is connected to the adjusting bolt, and the extension and retraction of the push rod can be controlled by rotating the adjusting bolt, and a pull rod is also connected between the clamping seat and the clamping arm; The side-pushing fixture comprises a first support, a second support arranged on the top of the first support, and a side-pushing assembly arranged on the top of the second support, the side-pushing assembly comprises a side-pushing head and an adjusting screw connected to each other, the extension and retraction of the side-pushing head can be controlled by rotating the adjusting screw, and the first support, the second support, and the side-pushing assembly are connected by the fastener; The support clamp includes a base, a lifting rod arranged on the top of the base, and a lifting head arranged on the free end of the lifting rod. The lifting rod extends from the top of the base. An adjusting worm connected to the lifting rod is arranged on one side of the base. The lifting and lowering of the lifting rod can be controlled by rotating the adjusting worm.

2. The modular clamping device for large workpiece processing according to claim 1, characterized in that: The number of the clamping fixtures is 4 to 8, and the plurality of clamping fixtures are symmetrically distributed on both sides of the workpiece along the axis in the length direction of the workpiece, and the clamping seat abuts against the top of the workpiece.

3. The modular clamping device for large workpiece processing according to claim 1, characterized in that: The number of the side push fixtures is 2 to 4, and the plurality of side push fixtures are symmetrically distributed on both sides of the workpiece along the axis in the length direction of the workpiece, and the side push head abuts against the side surface of the workpiece.

4. The modular clamping device for large workpiece processing according to claim 1, characterized in that: The number of the support clamps is 4 to 8, and the plurality of support clamps are symmetrically distributed at the bottom of the workpiece along the axis in the width direction of the workpiece, and the lifting head abuts against the bottom of the workpiece.

5. The modular clamping device for large workpiece processing according to claim 1, characterized in that: The support seat, the support support plate, the side thrust assembly, and the base are all provided with T-slots at the bottom, and the first support and the second support are both provided with T-slots at the top and bottom, and the T-slots match the fasteners.

6. The modular clamping device for large workpiece processing according to claim 1, characterized in that: The first support and the second support are connected to the lower side of the support seat through the fastener.

7. The modular clamping device for large workpiece processing according to claim 1, characterized in that: The first support and the second support are connected below the base through the fastener.

8. The modular clamping device for large workpiece processing according to claim 1, characterized in that: The top of the workbench is provided with the T-shaped slot.

9. A modular clamping method for machining large workpieces, the modular clamping method being implemented using the modular clamping device according to any one of claims 1 to 8, comprising: Step 1: According to the size characteristics of the workpiece to be processed, the height of the support fixture is adjusted by increasing or decreasing the number of the second support at the bottom of the base, the support fixture is assembled, and a plurality of assembled support fixtures are fixed to the designated position on the workbench through the fasteners, and the workpiece is placed on the top of the support fixture through the lifting equipment, so that the lifting head is against the bottom end of the workpiece, the height deviation of the workpiece is detected by the measuring tool, and the adjusting worm is rotated with a wrench synchronously to raise and lower the lifting rod, thereby adjusting the height deviation of the workpiece until the processing requirements are met; Step 2: According to the size characteristics of the workpiece to be processed, the height of the side push fixture is adjusted by increasing or decreasing the number of the second supports, and the side push fixture is assembled. Then, a plurality of the assembled side push fixtures are fixed to the specified position on the workbench through the fasteners, and the side push head is pressed against the end face of the workpiece. Then, the horizontal deviation of the workpiece is detected by a measuring tool, and the adjusting screw is rotated synchronously with a wrench to extend and retract the side push head, thereby adjusting the horizontal deviation of the workpiece until the processing requirements are met; Step 3: According to the size characteristics of the workpiece to be processed, adjust the height of the clamping clamp by increasing or decreasing the number of the second supports at the bottom of the support seat, assemble the clamping clamp, and then fix the multiple assembled clamps to the specified position on the workbench through the fasteners, and press the bottom of the clamping seat against the top of the workpiece. Then, calculate the clamping force and use a wrench to rotate the adjusting bolt to extend and retract the push rod, thereby adjusting the clamping force in the vertical direction of the workpiece until the clamping force meets the processing requirements, thereby completing the clamping of the workpiece.

10. The modular clamping method for large workpiece processing according to claim 9, characterized in that: When the workpiece to be processed again is the same as the workpiece processed last time, the clamping of the workpiece can be completed by repeating the above steps 2 and 3 in sequence.

Images