CN115302273A - Rapid positioning and clamping tool for polyhedral parts, assembly and use method thereof - Google Patents
Rapid positioning and clamping tool for polyhedral parts, assembly and use method thereof Download PDFInfo
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- CN115302273A CN115302273A CN202210881075.XA CN202210881075A CN115302273A CN 115302273 A CN115302273 A CN 115302273A CN 202210881075 A CN202210881075 A CN 202210881075A CN 115302273 A CN115302273 A CN 115302273A
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- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000003825 pressing Methods 0.000 claims abstract description 71
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 239000002131 composite material Substances 0.000 abstract description 6
- 238000005520 cutting process Methods 0.000 abstract description 6
- 239000011204 carbon fibre-reinforced silicon carbide Substances 0.000 abstract description 5
- 230000006378 damage Effects 0.000 abstract description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 9
- 239000004917 carbon fiber Substances 0.000 description 9
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 8
- 239000004744 fabric Substances 0.000 description 5
- 238000005229 chemical vapour deposition Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 208000012260 Accidental injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 230000000881 depressing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
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Abstract
The invention relates to a polyhedral part rapid positioning and clamping tool, a component and a using method thereof, which are applicable to polyhedral parts made of C/SiC composite materials. The problems of long operation time and easy accidental part damage of the existing polyhedral part clamping and positioning method are solved. The clamping head component and the pressing component are positioned on the tool platform; the chuck component comprises n groups of chuck units, each group of chuck units comprises a first driving component and two chuck devices, and the two chuck devices are oppositely arranged along the y direction; the pressing assembly comprises m groups of pressing units, and each group of pressing units comprises at least one pressing block; in the positioning and clamping process, a part is placed on a tool platform; the first driving assembly drives the two chuck devices to synchronously and relatively move on the tool platform along the y direction so as to clamp the parts; the part is compressed on the tooling platform through the compressing assembly. The method can accurately clamp and position the polyhedral part without trial cutting, is simple to operate, and has higher clamping and positioning efficiency.
Description
Technical Field
The invention relates to a positioning and clamping tool for parts and a processing method, in particular to a quick positioning and clamping tool for polyhedral parts and a using method thereof, which are applicable to polyhedral parts made of C/SiC composite materials.
Background
The C/SiC composite material is a high-temperature-resistant, high-hardness and wear-resistant composite material, and is obtained by processing carbon fibers into carbon fiber bundles, weaving the carbon fiber bundles into carbon fiber cloth, and finally, using the carbon fiber cloth as a blank to perform continuous densification by adopting methods such as chemical vapor deposition (CVI), and the like.
The C/SiC composite material polyhedral part is characterized in that carbon fiber cloth is sewn on a die by carbon fiber bundles, and the carbon fiber cloth is continuously densified by adopting a chemical vapor deposition (CVI) method, so that the carbon fiber cloth is continuously hardened and gradually forms the required part shape.
Such parts are relatively similar to cast parts of metal parts. The surface of the formed part is rough and is not easy to process. Because the height and the length of the part need to be processed, the final quality of the product can be influenced by accurate positioning and clamping of the part during processing. The common positioning method for the polyhedral part comprises a trial cutting method or a cutter symmetry method; the trial cutting method is to run a machining program through a numerical control machine tool, perform trial cutting continuously on the position or the surface of the rough material of the part, and adjust the actual position of the part. The actual position of the part can be coincided with the theoretical position through trial cutting and position adjustment for many times. The tool symmetry method is characterized in that a part is firstly pressed on the surface of a machine tool, two symmetrical points are respectively taken on two sides of the part, the tool rotates to contact the surface of the part, the coordinates of the machine tool are checked, and the position of the part is continuously adjusted to ensure that the part is clamped correctly. The position of the part also needs to be adjusted for multiple times, and the cutter is contacted with the surface of the part for multiple times so as to align the position of the part. The two methods require that the cutter contacts the surface of the part, and when the operation is improper, the part is cut excessively, so that the risk of accidentally damaging the part exists. In addition, in the clamping process, the two methods need to carry out reciprocating operation continuously, so that the efficiency is low, and the time cost is high.
Disclosure of Invention
In order to solve the problems of long operation time, low efficiency and easy accidental part damage of the existing polyhedral part clamping and positioning method, the invention provides a part rapid positioning and clamping tool, a component and a using method thereof, which are applicable to C/SiC composite polyhedral parts.
The technical scheme of the invention is to provide a quick positioning and clamping tool for polyhedral parts, which is characterized in that: the clamping head component and the pressing component are positioned on the tool platform; defining that the length direction of the tool platform is the x direction, the width direction is the y direction, and the height direction is the z direction;
the tool platform is used for supporting a part;
the chuck assembly comprises n groups of chuck units, each group of chuck units comprises a first driving assembly and two chuck devices, and the two chuck devices are oppositely arranged along the y direction; the two chuck devices can synchronously move relatively or oppositely on the tool platform along the y direction under the driving of the first driving component, and are used for clamping or loosening parts; wherein n is an integer greater than or equal to 1;
the pressing assembly comprises m groups of pressing units, each group of pressing units comprises at least one pressing block and is used for pressing parts on the tool platform, and m is an integer greater than or equal to 1.
Further, in order to meet the clamping requirements of long-beam large-size parts, the long-beam large-size parts are placed along the length direction of the tool platform; n is larger than 1, n groups of chuck units are arranged along the x direction; m is larger than 1, m groups of pressing units are arranged along the x direction.
Furthermore, the first driving assembly is a double-head reverse screw rod, two ends of the double-head reverse screw rod are screw rod sections, and the two chuck devices are respectively positioned at two ends of the double-head reverse screw rod and are in threaded connection with the double-head reverse screw rod;
the tooling platform comprises a base; the base is provided with n groups of limiting grooves, each group of limiting grooves extends along the y direction, and each group of double-head reverse lead screws are coaxially arranged in each group of limiting grooves.
Further, in order to axially limit the double-end reverse lead screw, the positioning and clamping tool further comprises a shaft limiting tool;
the shaft limiting tool comprises a shaft positioning block and a shaft protecting block; the top of the shaft positioning block is provided with a first arc-shaped groove, and the bottom of the shaft protection block is provided with a second arc-shaped groove; the shaft protection block is fixed at the top of the shaft positioning block, and the first arc-shaped groove and the second arc-shaped groove are spliced to form a screw rod limiting through hole;
the shaft limiting tool is fixed on the tool platform to ensure that the lead screw limiting through hole is coaxial with the limiting groove;
the middle section of the double-end reverse screw rod is a cylinder with the diameter smaller than that of the screw rod sections at the two ends;
the aperture of the lead screw limiting through hole is smaller than the diameters of lead screw sections at two ends of the double-head reverse lead screw and larger than the diameter of a middle section cylinder of the double-head reverse lead screw; the shaft limiting tool is coaxially sleeved on the middle section cylinder of the double-end reverse lead screw through the lead screw limiting through hole to realize axial limiting of the double-end reverse lead screw.
Further, the chuck device comprises a moving block, a first ejector rod and a clamping head; the clamping head is fixed on the moving block through a first ejector rod; the moving block comprises a head part, a neck part and a bottom part, an arc-shaped through groove is formed in the bottom part, and threads are arranged on the inner wall of the arc-shaped through groove;
the tooling platform also comprises a cover plate fixed on the upper surface of the base, and a guide notch extending along the y direction is formed in the cover plate; the guide notches correspond to the limiting grooves one by one and are positioned right above the limiting grooves;
the limiting groove is a special-shaped groove and is formed by arranging an arc-shaped groove extending along the axial direction in the middle area of the bottom of the rectangular groove, and the chord length of the arc-shaped groove is smaller than the width of the rectangular groove; the double-end reverse lead screw is positioned in the arc-shaped groove;
the width of the rectangular groove is greater than that of the guide notch; a first guide groove is formed among the bottom of the cover plate, the side wall of the rectangular groove and the bottom of the rectangular groove;
the neck of the moving block is clamped into the guide notch, the two side edges of the bottom of the moving block are clamped into the first guide groove, and the arc-shaped through groove is in threaded connection with the double-head reverse lead screw;
when the double-head reverse lead screw rotates in the limiting groove, the chuck devices which are in threaded connection with the two ends of the double-head reverse lead screw can be driven to synchronously and relatively move along the y direction, so that the clamping heads are in contact with the surface of a part, and the part is clamped.
Furthermore, the chuck device also comprises a silica gel pad fixed at the end part of the clamping head.
The pressing assembly further comprises a second driving assembly, and the pressing block is driven by the second driving assembly to press the part on the tooling platform downwards along the height direction of the tooling platform;
the second driving assembly comprises a connecting block, a connecting rod, a supporting rod, a handle and a second ejector rod;
the supporting rod comprises a vertical supporting piece and a transverse supporting piece which are integrally arranged;
the connecting block is fixed on the tool platform; two ends of the connecting block are respectively hinged with the connecting rod and one end of the vertical supporting piece;
the handle comprises a handle acting end, one side of the handle acting end is hinged with the other end of the connecting rod, and the other side of the handle acting end is hinged with the other end of the vertical supporting piece;
the second ejector rod is parallel to the vertical supporting piece, one end of the second ejector rod is fixed at the free end of the transverse supporting piece, and the other end of the second ejector rod is fixed with the pressing block.
Furthermore, the compression assembly also comprises a cushion block, a pressure plate, a screw rod and a nut; the cushion block is fixed on the tool platform; two ends of the pressing plate are respectively lapped on the tops of the pressing block and the cushion block; a through hole is formed in the middle of the pressing plate; the lower end of the screw penetrates through the through hole and is fixed on the tool platform, the nut is screwed at the upper end of the screw, and downward pressure is applied to the pressing plate in the screwing process;
the tooling platform (1) is also provided with a datum hole (14).
The invention also provides a quick positioning and clamping tool assembly for the polyhedral part, which is characterized in that: the quick positioning and clamping tool for the polyhedral parts comprises a plurality of groups of quick positioning and clamping tools for the polyhedral parts, wherein a group of chuck units and a pressing unit are arranged on a tool platform of the quick positioning and clamping tool for each group of polyhedral parts.
The invention also provides a using method of the positioning and clamping tool, which is characterized by comprising the following steps:
and 4, pressing the part on the tool platform through a pressing block by using the pressing assembly.
Further, step 3 specifically includes:
3.1, firstly, rotating a double-head reverse screw rod at the middle position to enable two chuck devices to synchronously and relatively move on a tool platform along the y direction, and preliminarily clamping a part; then the double-end reverse screw rods on the two sides are rotated, so that the corresponding chuck devices preliminarily clamp the parts, and the symmetrical central plane of the parts is ensured to be superposed with the symmetrical centerline plane of the tool;
3.2, rotating the double-end reverse screw rod at the middle position to enable the two chuck devices to synchronously and relatively move on the tool platform along the y direction to clamp the part; and then the double-end reverse screw rods on the two sides are rotated to enable the corresponding chuck devices to clamp the parts.
The invention has the beneficial effects that:
1. according to the invention, the polyhedral component can be accurately clamped and positioned without trial cutting, so that the processing precision of the polyhedral component is further improved;
according to the invention, the outer profile of the polyhedral part is taken as a positioning reference, the part is placed on the tool platform in the positioning process, the two chuck devices are synchronously driven to move towards the middle by rotating the double-head reverse screw rod, the part is clamped at two sides simultaneously, the coincidence of the symmetrical central plane of the part and the symmetrical middle line plane of the tool can be ensured, the coincidence of the actual position and the theoretical position of the part is realized, and the clamping precision is higher. In the process, a cutter is not required to be used for contacting parts, the risk of accidental injury is avoided, and the machining precision of the polyhedral parts can be further improved.
2. The invention has simple operation and high clamping and positioning efficiency;
the invention can clamp parts by rotating the double-head reverse screw rod to drive the chuck device by using the inner hexagonal wrench. And the part is compressed on the tooling platform through the compression block by utilizing the compression assembly. Compared with the existing clamping and positioning method, the method is simple to operate and has higher clamping and positioning efficiency.
Drawings
FIG. 1 is a schematic structural view of a rapid positioning and clamping tool for polyhedral parts in example 1;
FIG. 2 is a schematic view of a part of the structure of the rapid positioning and clamping fixture for polyhedral parts in embodiment 1;
FIG. 3 is a schematic structural view of a cartridge unit in embodiment 1;
FIG. 4 is a schematic view showing the structure of a chuck device in embodiment 1;
FIG. 5 is an exploded view of the rapid positioning and clamping fixture for polyhedral components in example 1;
FIG. 6 is a schematic view of a fitting structure of a chuck unit and a shaft limiting tool in embodiment 1;
FIG. 7 is a schematic view showing the structure of a compressing unit in embodiment 1; wherein a and b are schematic diagrams of different viewing angles;
FIG. 8 is a schematic structural view of the rapid positioning and clamping tooling for polyhedral parts in embodiment 2;
fig. 9 is a schematic structural view of the rapid positioning and clamping tool for polyhedral parts in embodiment 3.
The reference numbers in the figures are:
1. a tooling platform; 11. a base; 111. a limiting groove; 12. a shaft limiting tool; 121. a shaft positioning block; 1211. a first arc-shaped groove; 122. a shaft protection block; 1221. a second arc-shaped groove; 123. a lead screw limiting through hole; 13. a cover plate; 131. a guide notch; 132. a first guide groove; 133. an arc-shaped groove; 14. a reference hole; 2. a chuck unit; 21. a double-ended reverse lead screw; 22. a chuck device; 221. a moving block; 2211. a head portion; 2212. a neck portion; 2213. a bottom; 2214. an arc-shaped through groove; 222. a first ejector rod; 223. a clamping head; 3. a pressing unit; 31. a compression block; 32. a support bar; 33. connecting blocks; 34. a connecting rod; 35. a handle; 351. a handle-acting end; 36. a second ejector rod; 4. a part; 51. cushion blocks; 52. pressing a plate; 53. a screw; 54. a nut; 6. and a sub-tooling platform.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, specific embodiments accompanied with figures are described in detail below, and it is apparent that the described embodiments are a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, shall fall within the protection scope of the present invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced otherwise than as specifically described herein, and it will be appreciated by those skilled in the art that the present invention may be practiced without departing from the spirit and scope of the present invention and that the present invention is not limited by the specific embodiments disclosed below.
Example 1
As shown in fig. 1, the rapid positioning and clamping tool for polyhedral parts in this embodiment includes a tool platform 1, a chuck assembly and a pressing assembly, where the tool platform 1 is located at the bottommost portion of the whole tool and is used for supporting the part 4 and the chuck assembly and the pressing assembly. The polyhedral elements 4 mentioned here can be U-shaped elements, four-sided boxes, five-sided boxes, etc. In fig. 1, a part 4 is a long beam type U-shaped part, and for convenience of description, the length direction of the tooling platform 1 may be defined as an x direction, the width direction as a y direction, and the height direction as a z direction; as can be seen from the figure, the long beam type part 4 is laid on the tool platform 1 along the x direction; the chuck component and the pressing component are both positioned on the tooling platform 1, the chuck component clamps the long beam parts 4 from two sides under the driving of the corresponding driving component, and the pressing component presses the long beam parts 4 on the tooling platform 1 from the upper part. As can be seen from fig. 1, the chuck assembly of this embodiment includes 3 sets of chuck units 2, and the pressing assembly includes 4 sets of pressing units 3, and in other embodiments, the number of the chuck units 2 and the number of the pressing units 3 can be adjusted according to the size of the component 4 and the specific requirements.
As shown in fig. 2, the tooling platform 1 of the present embodiment includes a base 11 and a cover plate 13 fixed on the top of the base 11; the base 11 is provided with 3 groups of limiting grooves 111, each group of limiting grooves 111 extends along the y direction, and the 3 groups of limiting grooves 111 are arranged along the x direction; the number of the limiting grooves 111 corresponds to the number of the cartridge units 2, and in other embodiments, can be adjusted according to specific requirements. As can be seen from the figure, the limiting groove 111 of this embodiment is a special-shaped groove, and is formed by opening an arc groove 133 extending along the axial direction in the middle area of the bottom of the rectangular groove, and the chord length of the arc groove 133 needs to be smaller than the width of the rectangular groove. The cover plate 13 is provided with 3 groups of guide gaps 131, each group of guide gaps 131 extends along the y direction, and the 3 groups of guide gaps 131 are arranged along the x direction; the guide notches 131 correspond to the limiting grooves 111 one by one and are positioned right above the limiting grooves 111; the width of the guide notch 131 is smaller than the width of the rectangular slot so that a first guide slot 132 is formed between the bottom of the cover plate 13, the side walls of the rectangular slot and the bottom of the rectangular slot. In order to facilitate the alignment of the position of the tool on the machine tool, a datum hole 14 is further formed in the tool platform 1.
Referring to fig. 3, it can be seen that each group of chuck units 2 of this embodiment includes a first driving assembly and two chuck devices 22, and the two chuck devices 22 are disposed oppositely along the y direction; the first driving assembly can be a double-end reverse lead screw 21, two ends of the double-end reverse lead screw 21 are lead screw sections, and the middle section is a cylinder with a diameter smaller than the lead screw sections at the two ends; the two chuck devices 22 are respectively positioned at two ends of the double-head reverse screw rod 21 and are in threaded connection with the double-head reverse screw rod 21. The chuck device 22 comprises a moving block 221, a first top rod 222 and a clamping head 223; the clamping head 223 is fixed on the moving block 221 through the first ejector rod 222, and a silica gel pad can be further fixed at the end of the clamping head 223, so that the surface of the part 4 is prevented from being scratched by the clamping head 223 in the clamping process; referring to fig. 4, it can be seen that the moving block 221 includes a head 2211, a neck 2212 and a bottom 2213, an arc through slot 2214 is formed in the bottom 2213, and the inner wall of the arc through slot 2214 is provided with threads to be connected with the double-headed reverse screw 21.
With reference to fig. 2 and 5, it can be seen that each set of double-headed reverse screw rods 21 is coaxially disposed in each set of limiting grooves 111 and located in the arc-shaped groove 133, the neck 2212 of the moving block 221 is inserted into the guiding notch 131, and the two side edges of the bottom 2213 of the moving block 221 are inserted into the first guiding groove 132. When the double-ended counter screw 21 is rotated in the circular-arc groove 133, the chuck devices 22 threadedly coupled to both ends thereof are driven to synchronously move relatively in the y-direction, so that the clamping head 223 comes into contact with the surface of the part 4, thereby clamping the part 4.
In order to limit the double-headed reverse lead screw 21 from moving axially in the arc-shaped groove 133, the tool platform 1 is further provided with a shaft limiting tool 12, and with reference to fig. 2, 5 and 6, it can be seen that the shaft limiting tool 12 includes a shaft positioning block 121 and a shaft protection block 122; a first circular arc-shaped groove 1211 is formed in the top of the shaft positioning block 121, and a second circular arc-shaped groove 1221 is formed in the bottom of the shaft protection block 122; the shaft protection block 122 is fixed on the top of the shaft positioning block 121, and the first circular arc-shaped groove 1211 and the second circular arc-shaped groove 1221 are spliced to form the screw rod limiting through hole 123. The aperture of the lead screw limiting through hole 123 is smaller than the diameter of the lead screw sections at two ends of the double-head reverse lead screw 21. The shaft limiting tool 12 is coaxially sleeved on the middle section cylinder of the double-end reverse lead screw through the lead screw limiting through hole 123, and when the double-end reverse lead screw 21 rotates in the arc-shaped groove 133, the double-end reverse lead screw 21 cannot move along the axial direction in the arc-shaped groove 133.
As can be seen from fig. 7, the pressing unit 3 of the present embodiment includes a pressing block 31, a connecting block 33, a connecting rod 34, a supporting rod 32, a handle 35 and a second push rod 36; the support rod 32 comprises a vertical support member and a transverse support member which are integrally arranged; the connecting block 33 is fixed on the tooling platform 1; two ends of the connecting block 33 are respectively hinged with the connecting rod 34 and one end of the vertical supporting piece; one side of the handle action end 351 is hinged with the other end of the connecting rod 34, and the other side of the handle action end 351 is hinged with the other end of the vertical support; the second top bar 36 is parallel to the vertical support member, one end of the second top bar is fixed to the free end of the horizontal support member, and the other end of the second top bar is fixed to the pressing block 31. When the handle 35 is lifted, the connecting rod 34, the supporting rod 32 and the second push rod 36 can drive the pressing block 31 to move upwards along the z direction, and when the handle 35 is pressed downwards, the connecting rod 34, the supporting rod 32 and the second push rod 36 can drive the pressing block 31 to move downwards along the z direction.
The polyhedral component 4 can be positioned and clamped by the polyhedral component quick positioning and clamping tool in the embodiment through the following processes:
And 2, placing the part 4 on the upper surface of the tooling platform 1.
And 5, pressing the handle 35 downwards by using the pressing assembly, and pressing the part 4 on the tooling platform 1 through the pressing block 31.
Example 2
As shown in fig. 8, unlike embodiment 1, the pressing assembly of the present embodiment includes a spacer 51, a pressing plate 52, a screw 53, a nut 54, and a pressing block 31; the cushion block 51 is fixed on the tooling platform 1; two ends of the pressure plate 52 are respectively pressed on the tops of the pressing block 31 and the cushion block 51; the middle part of the pressure plate 52 is provided with a through hole which is a rectangular hole as can be seen from the figure, and the size of the through hole ensures that the screw can pass through; the lower end of the screw 53 penetrates through the through hole to be fixed on the tooling platform 1, the nut 54 is screwed at the upper end of the screw 53, and downward pressure is applied to the pressing plate 52 in the screwing process.
The polyhedral component 4 can be positioned and clamped by the polyhedral component quick positioning and clamping tool in the embodiment through the following processes:
And 2, placing the part 4 on the upper surface of the tooling platform 1.
Step 5, placing the pressing block 31 on the top of the part 4, and respectively pressing two ends of the pressing plate 52 on the tops of the pressing block 31 and the cushion block 51; the lower end of the screw 53 penetrates through the through hole of the pressing plate 52 and is fixed on the tooling platform 1, the nut 54 is screwed into the upper end of the screw 53, and downward pressure is applied to the pressing plate 52 in the screwing process.
Example 3
As shown in fig. 9, different from embodiment 1, the tooling platform 1 of this embodiment includes 3 independent sub-platforms, each sub-platform is correspondingly provided with a set of chuck units 2 and a set of pressing units 3, and the number of the independent sub-platforms can be adjusted according to specific requirements.
The polyhedral component 4 can be clamped by the polyhedral component rapid positioning and clamping tool in the embodiment through the following processes:
step 1: the number of independent sub-platforms is selected according to the length of the part 4, and the interval between the adjacent independent sub-platforms is about 300 mm.
And 2, step: the quick positioning and clamping tool for the polyhedral component in the embodiment is arranged on a machine tool, and the tool is straightened and aligned by utilizing the datum hole 14.
And step 3: the part 4 is placed on the upper surface of each individual sub-platform and pressed down by hand.
And 4, step 4: firstly, rotating the double-head reverse screw rod 21 in the middle to enable the chuck component to lightly clamp the part 4, and then rotating the double-head reverse screw rods 21 on the two sides to enable the chuck component to lightly clamp the part 4; in the same way, when rotating the reverse lead screw 21 of double-end, the part both sides can receive the loading force simultaneously, and the symmetry center axle of part can remove slowly to coincide with the symmetry center axle of frock.
And 5: rotating the middle double-head reverse screw 21 to enable the chuck component to clamp the part 4, and then rotating the double-head reverse screw 21 on the two sides to enable the chuck component to clamp the part 4; the force for rotating the double-head reverse screw 21 is 15-20 N.m.
Step 6: the part 4 can be secured to the tool by depressing the chuck assembly handle 35.
Claims (10)
1. The utility model provides a tight frock of quick location clamp of polyhedron part which characterized in that: the fixture comprises a fixture platform (1), and a chuck assembly and a pressing assembly which are positioned on the fixture platform (1); defining that the length direction of the tool platform (1) is the x direction, the width direction is the y direction, and the height direction is the z direction;
the tool platform (1) is used for supporting a part (4);
the chuck component comprises n groups of chuck units (2), each group of chuck units (2) comprises a first driving component and two chuck devices (22), and the two chuck devices (22) are oppositely arranged along the y direction; the two chuck devices (22) can synchronously move relative to or oppositely move on the tool platform (1) along the y direction under the driving of the first driving component and are used for clamping or loosening the part (4); wherein n is an integer greater than or equal to 1;
the pressing assembly comprises m groups of pressing units (3), each group of pressing units (3) comprises at least one pressing block (31) and is used for pressing the part (4) on the tooling platform (1), and m is an integer greater than or equal to 1.
2. The polyhedral part rapid positioning and clamping tool according to claim 1, which is characterized in that: n is more than 1, n groups of chuck units (2) are arranged along the x direction; m is larger than 1, m groups of pressing units (3) are arranged along the x direction.
3. The polyhedral part rapid positioning and clamping tool according to claim 2, which is characterized in that: the first driving assembly is a double-end reverse lead screw (21), two ends of the double-end reverse lead screw (21) are lead screw sections, and the two chuck devices (22) are respectively positioned at two ends of the double-end reverse lead screw (21) and are in threaded connection with the double-end reverse lead screw (21);
the tooling platform (1) comprises a base (11); the base (11) is provided with n groups of limiting grooves (111), each group of limiting grooves (111) extends along the y direction, and the n groups of limiting grooves (111) are arranged along the x direction;
each group of double-end reverse lead screws (21) are coaxially arranged in each group of limiting grooves (111).
4. The polyhedral part rapid positioning and clamping tool according to claim 3, which is characterized in that: the double-head reverse screw rod limiting device further comprises a shaft limiting tool (12) for limiting the double-head reverse screw rod (21) to move in the limiting groove (111) along the axial direction;
the shaft limiting tool (12) comprises a shaft positioning block (121) and a shaft protection block (122); a first arc-shaped groove (1211) is formed in the top of the shaft positioning block (121), and a second arc-shaped groove (1221) is formed in the bottom of the shaft protection block (122); the shaft protection block (122) is fixed to the top of the shaft positioning block (121), and the first arc-shaped groove (1211) and the second arc-shaped groove (1221) are spliced to form a lead screw limiting through hole (123);
the shaft limiting tool (12) is fixed on the tool platform (1) to ensure that the lead screw limiting through hole (123) is coaxial with the limiting groove (111);
the middle section of the double-end reverse lead screw (21) is a cylinder with the diameter smaller than that of the lead screw sections at the two ends;
the aperture of the lead screw limiting through hole (123) is smaller than the diameter of lead screw sections at two ends of the double-head reverse lead screw (21) and larger than the diameter of a middle-section cylinder of the double-head reverse lead screw (21); the shaft limiting tool (12) is coaxially sleeved on a middle section cylinder of the double-head reverse lead screw (21) through a lead screw limiting through hole (123) to realize axial limiting of the double-head reverse lead screw (21).
5. The polyhedral part fast positioning and clamping tool set forth in claim 4, wherein: the clamping head device (22) comprises a moving block (221), a first ejector rod (222) and a clamping head (223); the clamping head (223) is fixed on the moving block (221) through a first ejector rod (222); the moving block (221) comprises a head portion (2211), a neck portion (2212) and a bottom portion (2213), an arc-shaped through groove (2214) is formed in the bottom portion (2213), and threads are arranged on the inner wall of the arc-shaped through groove (2214);
the tooling platform (1) further comprises a cover plate (13) fixed on the upper surface of the base (11), and a guide notch (131) extending along the y direction is formed in the cover plate (13); the guide notches (131) correspond to the limiting grooves (111) one by one and are positioned right above the limiting grooves (111);
the limiting groove (111) is a special-shaped groove and is formed by arranging an arc-shaped groove (133) extending along the axial direction of the rectangular groove in the middle area of the bottom of the rectangular groove, and the chord length of the arc-shaped groove (133) is smaller than the width of the rectangular groove; the double-end reverse lead screw (21) is positioned in the arc-shaped groove (133);
the width of the rectangular groove is greater than that of the guide notch (131); a first guide groove (132) is formed among the bottom of the cover plate (13), the side wall of the rectangular groove and the bottom of the rectangular groove;
the neck (2212) of the moving block (221) is clamped into the guide notch (131), the two side edges of the bottom (2213) of the moving block (221) are clamped into the first guide groove (132), and the arc-shaped through groove (2214) is in threaded connection with the double-end reverse lead screw (21);
the chuck device (22) further comprises a silica gel pad fixed at the end part of the clamping head (223).
6. The polyhedral part rapid positioning and clamping tool according to claim 5, which is characterized in that: the pressing assembly further comprises a second driving assembly, and the pressing block (31) can press the part (4) on the tooling platform (1) downwards along the z direction under the driving of the second driving assembly;
the second driving component comprises a connecting block (33), a connecting rod (34), a supporting rod (32), a handle (35) and a second ejector rod (36);
the supporting rod (32) comprises a vertical supporting piece and a transverse supporting piece which are integrally arranged;
the connecting block (33) is fixed on the tool platform (1); two ends of the connecting block (33) are respectively hinged with the connecting rod (34) and one end of the vertical supporting piece;
the handle (35) comprises a handle acting end (351), one side of the handle acting end (351) is hinged with the other end of the connecting rod (34), and the other side of the handle acting end (351) is hinged with the other end of the vertical supporting piece;
the second ejector rod (36) is parallel to the vertical supporting piece, one end of the second ejector rod is fixed at the free end of the transverse supporting piece, and the other end of the second ejector rod is fixed with the pressing block (31).
7. The polyhedral part rapid positioning and clamping tool according to claim 5, which is characterized in that: the pressing assembly further comprises a cushion block (51), a pressing plate (52), a screw rod (53) and a nut (54); the cushion block (51) is fixed on the tooling platform (1); two ends of the pressure plate (52) are respectively lapped on the tops of the pressing block (31) and the cushion block (51); the middle part of the pressing plate (52) is provided with a through hole; the lower end of the screw rod (53) penetrates through the through hole and is fixed on the tooling platform (1), the nut (54) is screwed at the upper end of the screw rod (53), and downward pressure is applied to the pressure plate (52) in the screwing process;
the tooling platform (1) is also provided with a datum hole (14).
8. The utility model provides a tight frock subassembly of quick location clamp of polyhedron part which characterized in that: the quick positioning and clamping tool for the polyhedral parts comprises a plurality of groups of quick positioning and clamping tools for the polyhedral parts as claimed in any one of claims 1 to 7, wherein a group of chuck units (2) and a group of pressing units (3) are arranged on a tool platform (1) of each group of quick positioning and clamping tools for the polyhedral parts.
9. The use method of the polyhedral part rapid positioning and clamping tool disclosed by any one of claims 1 to 8 is characterized by comprising the following steps of:
step 1, mounting the polyhedral component rapid positioning and clamping tool on a machine tool, and straightening and aligning the tool;
step 2, placing the part (4) on the upper surface of the tooling platform (1);
step 3, driving the two chuck devices (22) to synchronously and relatively move on the tool platform (1) along the y direction by using the first driving assembly, so that the symmetrical central axis of the part (4) is superposed with the symmetrical central axis of the tool, and clamping the part (4);
and 4, pressing the part (4) on the tooling platform (1) through a pressing block (31) by using the pressing assembly.
10. The use method according to claim 9, wherein step 3 specifically comprises:
3.1, firstly, rotating a double-head reverse screw rod (21) at the middle position to enable two chuck devices (22) to synchronously and relatively move on the tool platform (1) along the y direction, and preliminarily clamping a part (4); then the double-end reverse screw rods (21) at two sides are rotated to enable the corresponding chuck devices (22) to preliminarily clamp the parts (4); ensuring that the symmetrical central plane of the part (4) is superposed with the symmetrical centerline plane of the tool;
3.2, rotating the double-end reverse screw rod (21) at the middle position to enable the two chuck devices (22) to synchronously and relatively move on the tooling platform (1) along the y direction to clamp the part (4); then the double-head reverse screw rods (21) at the two sides are rotated, so that the corresponding chuck devices (22) clamp the parts (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210881075.XA CN115302273A (en) | 2022-07-25 | 2022-07-25 | Rapid positioning and clamping tool for polyhedral parts, assembly and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210881075.XA CN115302273A (en) | 2022-07-25 | 2022-07-25 | Rapid positioning and clamping tool for polyhedral parts, assembly and use method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN115302273A true CN115302273A (en) | 2022-11-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210881075.XA Pending CN115302273A (en) | 2022-07-25 | 2022-07-25 | Rapid positioning and clamping tool for polyhedral parts, assembly and use method thereof |
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| Country | Link |
|---|---|
| CN (1) | CN115302273A (en) |
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