Electric chuck suitable for thermal environment, working method, welding equipment and method

Abstract

The invention belongs to the technical field of welding equipment, and provides an electric chuck suitable for a thermal environment, a working method, welding equipment and a method. The clutch power device comprises a clutch driving gear, a driven gear is rotationally arranged in the mounting box, the clutch driving gear is meshed with the driven gear, and a chuck wire is arranged on the driven gear; an output shaft of the rotary power device is provided with a rotary driving gear, a supporting outer ring is rotationally arranged in the mounting box, the supporting outer ring is meshed with the supporting outer ring, and the supporting outer ring is provided with a chuck through a chuck connecting disc; by means of the clutch power device and the rotating power device, the clamping action of the clamping jaw and the welding rotating action after a weldment is clamped can be achieved respectively, the structure is simple, and in the welding process, the phenomena that a clamp is unstable in clamping, a chuck is stuck and the like due to thermal deformation generated in the welding process are avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of welding equipment, and particularly relates to an electric chuck applicable to a hot environment, a working method, a welding equipment and a method. Background Art

[0002] With the increasingly wide application of automatic welding technology in industrial production, welding chucks for clamping workpieces are widely used due to their excellent centering and clamping performance. Existing chucks are mostly manual chucks, pneumatic chucks or hydraulic chucks: manual chucks require manual tightening or loosening, resulting in high labor intensity for operators; pneumatic chucks or hydraulic chucks are difficult to maintain due to their overly precise structures.

[0003] When realizing the clamping of workpieces and the rotation during the welding process by automatically driving the chuck, a complex driving structure and a direct acting mechanism are required as supports, resulting in a complex structure; and currently, after the chuck is automatically clamped, the heat generated during the welding process will cause the chuck to undergo thermal deformation, resulting in phenomena such as unstable clamping and chuck jamming, affecting the welding work. Summary of the Invention

[0004] In order to solve the above problems, the present invention provides an electric chuck applicable to a hot environment, a working method, a welding equipment and a method. The clamping action of the jaws can be realized respectively through a clutch power device and a rotating power device, and the welding rotation action after clamping the workpiece can be realized. The structure is simple, and during the welding process, heat absorption can be carried out through a polyurethane hollow rod, avoiding phenomena such as unstable clamping of the fixture and chuck jamming caused by thermal deformation generated during the welding process, effectively reducing the labor intensity, improving the production and processing efficiency, and at the same time improving the welding quality.

[0005] To achieve the above object, in the first aspect, the present invention provides an electric chuck applicable to a hot environment, adopting the following technical solutions: An electric chuck applicable to a hot environment includes an installation box, as well as a rotating power device and a clutch power device provided on the installation box; The clutch power device includes a clutch driving gear. A driven gear is rotatably arranged in the installation box. The clutch driving gear meshes with the driven gear. A chuck lead screw is arranged on the driven gear. The output shaft of the rotating power device is provided with a rotating driving gear. A supporting outer ring is rotatably arranged in the installation box. The supporting outer ring meshes with the rotating driving gear. The supporting outer ring is slidably provided with a chuck through a chuck connecting disc; The chuck is provided with jaws. Thread teeth meshing with the chuck lead screw are arranged at the bottom of the jaws. A polyurethane hollow rod is arranged on the jaws.

[0006] Further, the clutch power device is an electromagnetic clutch, which includes a copper sheet, a coil and a clutch gear shaft; the copper sheet is fixed on the clutch driving gear, and the coil is fixed on the clutch gear shaft.

[0007] Further, the jaw includes a claw, a claw extension and a claw stopper; the bottom of the claw is provided with thread teeth, and a T-shaped groove thread engaged with the thread teeth is provided on the chuck thread; a ninth bolt is arranged on one side of the claw, and the ninth bolt is a tightening screw; a through square hole is formed in the middle of the claw extension; the claw stopper passes through the square hole and is fixed to the claw through a tenth bolt; a polyurethane hollow rod and a polyurethane top sheet are arranged in a circular hole preset on one side of the claw extension; the polyurethane top sheet is located outside the circular hole and contacts with the ninth bolt.

[0008] Further, the size of the square hole is larger than that of the claw stopper, and there is a gap between the side wall of the claw stopper and the side wall of the square hole.

[0009] Further, the claw extension is connected to the extended claw through an eleventh bolt.

[0010] Further, the thickness of the polyurethane hollow rod is: ; wherein, is the friction coefficient of the welded part surface; is the linear expansion coefficient; is the ambient temperature; is the reference temperature; is the stiffness of the elastomer.

[0011] Further, the cross-sectional area of the polyurethane hollow rod is: ; wherein, is the elastic modulus of the polyurethane at room temperature; is the axial deformation of the polyurethane hollow rod.

[0012] To achieve the above object, in a second aspect, the present invention also provides a working method of an electric chuck applicable to a hot environment, adopting the following technical solution: A working method of an electric chuck applicable to a hot environment, using the electric chuck applicable to a hot environment as described in the first aspect, includes: realizing the clamping action of the jaw and the welding rotation action after clamping the welded part through the clutch power device and the rotation power device respectively.

[0013] To achieve the above object, in a third aspect, the present invention further provides a welding device, adopting the following technical solution: A welding device uses an electric chuck applicable to a hot environment as described in the first aspect.

[0014] To achieve the above object, in a fourth aspect, the present invention further provides a welding method, adopting the following technical solution: A welding method uses the welding device as described in the third aspect.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: In the present invention, a rotary power device and a clutch power device are provided on the mounting box; the clutch power device includes a clutch driving gear, a driven gear is rotatably arranged in the mounting box, the clutch driving gear meshes with the driven gear, and a chuck wire is arranged on the driven gear; a rotary driving gear is arranged on the output shaft of the rotary power device, a support outer ring is rotatably arranged in the mounting box, the support outer ring meshes with the support outer ring, and a chuck is arranged on the support outer ring through a chuck connecting plate; a jaw is arranged on the chuck, and a thread tooth meshing with the chuck wire is arranged at the bottom of the jaw. The clamping action of the jaw can be realized respectively through the clutch power device and the rotary power device, and the welding rotation action after clamping the welded part can be realized. The structure is simple, and during the welding process, heat can be absorbed through the polyurethane hollow rod, and the deformation of the entire chuck can be compensated by the slight deformation of the polyurethane hollow rod, avoiding to a certain extent the phenomena such as unstable fixture clamping and chuck jamming caused by thermal deformation during the welding process, effectively reducing the labor intensity, improving the production and processing efficiency, and at the same time improving the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings forming a part of this embodiment are used to provide a further understanding of this embodiment. The schematic embodiments and descriptions thereof are used to explain this embodiment and do not constitute an improper limitation to this embodiment.

[0017] Figure 1 Schematic diagram of the chuck structure of Embodiment 1 of the present invention; Figure 2 Schematic diagram of the back structure of the chuck of Embodiment 1 of the present invention; Figure 3 Side sectional view of Embodiment 1 of the present invention; Figure 4 Schematic diagram of gear meshing of Embodiment 1 of the present invention; Figure 5 Schematic diagram of the clutch of Embodiment 1 of the present invention; Figure 6 Schematic diagram of the slewing bearing of Embodiment 1 of the present invention; Figure 7 Schematic diagram of the jaw structure of Embodiment 1 of the present invention; Figure 8 Schematic diagram of the arrangement of the polyurethane hollow rod of Embodiment 1 of the present invention; Wherein, 1. Jaw; 101. Chuck; 102. Ninth bolt; 103. Polyurethane top sheet; 104. Polyurethane hollow rod; 105. Tenth bolt; 106. Chuck position limiting member; 107. Chuck extension member; 108. Welding part fixing block; 109. Extended chuck; 1010. Eleventh bolt; 1011. Twelfth bolt; 1012. First adjusting member; 1013. Thirteenth bolt; 1014. Second adjusting member; 2. First bolt; 3. Chuck; 4. Second bolt; 5. Box cover plate; 6. Installation box; 7. Third bolt; 8. Reducer mounting plate; 9. Fourth bolt; 10. Rotating power device; 11. Fifth bolt; 12. Clutch power device; 13. Chuck wire; 14. Driven gear; 15. Chuck connection plate; 1601. Support inner ring; 1602. Ball; 1603. Support outer ring; 17. Sixth upper bolt; 18. Clutch driving gear; 19. Electromagnetic clutch; 1901. Copper sheet; 1902. Coil; 1903. Clutch gear shaft; 20. Rotating driving gear; 21. Seventh bolt; 22. Ring gear roller support; 23. Eighth bolt. Detailed implementation manners

[0018] The present invention will be further described below in conjunction with the drawings and embodiments.

[0019] It should be noted that the following detailed descriptions are all exemplary and are intended to provide further descriptions of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs.

[0020] Embodiment 1: As Figure 1 and Figure 2 shown, this embodiment provides an electric chuck applicable to a hot environment, including a jaw 1, a chuck 3, a first bolt 2, a chuck 3, a second bolt 4, a box cover plate 5, an installation box 6, a third bolt 7, a reducer mounting plate 8, a fourth bolt 9, a rotating power device 10, a fifth bolt 11, a clutch power device 12, a chuck wire 13, a driven gear 14, a chuck connection plate 15, a support inner ring 1601, a ball 1602, a support outer ring 1603, a sixth upper bolt 17, a clutch driving gear 18, an electromagnetic clutch 19, a rotating driving gear 20, a seventh bolt 21, a ring gear roller support 22 and an eighth bolt 23.

[0021] As Figure 1 , Figure 3 , Figure 4 ,Figure 5 and Figure 7 As shown in Figure 7 , the jaw 1 includes a claw 101, a ninth bolt 102, a polyurethane top sheet 103, a polyurethane hollow rod 104, a tenth bolt 105, a claw stopper 106, a claw extension 107, a welding part fixing block 108, an extended claw 109, an eleventh bolt 1010, a twelfth bolt 1011, a first adjusting part 1012, a thirteenth bolt 1013, a second adjusting part 1014, etc.

[0022] In some embodiments, as Figure 1 shown, multiple jaws 1 are evenly arranged circumferentially along the chuck 3 on the chuck 3, such as three jaws 1; the jaws 1 are slidably arranged on the chuck 3 through a slide rail or other sliding connectors, etc. As Figure 1 and Figure 3 shown, the chuck 3 is arranged on the chuck connection disc 15 through the first bolt 2. During operation, the multiple jaws 1 reciprocate radially along the chuck 3 to achieve clamping and loosening of the test piece; the driving of the jaws 1 can adopt a telescopic rod, a linear motor, the wire winding driving method in this embodiment, or other driving methods.

[0023] In some embodiments, as Figure 1 shown, the installation box cover plate 5 is fixed on the outside of the installation box 6 through the second bolt 4; the chuck 3 is not connected to the installation box cover plate 5 and can rotate relative to each other, as Figure 2 shown. Optionally, the rotary power device 10 includes a stepping motor and a reduction box, and is fixed on the reduction box mounting plate 8 through bolts. The reduction box mounting plate 8 is fixed on the back of the installation box 6 through the fourth bolt 9. The clutch power device 12 is a DC reduction motor and is fixed on the back of the installation box 6 through the fifth bolt 11. As Figure 4 shown, the support inner ring 1601 is fixed on the inside of the installation box 6 through the third bolt 7.

[0024] As Figure 4 shown, the rotary driving gear 20 is connected to the output shaft of the rotary power device 10. The rotary driving gear 20 meshes with the support outer ring 1603. A ball 1602 is arranged between the support outer ring 1603 and the support inner ring 1601.

[0025] As Figure 4 shown, the clutch driving gear 18 meshes with the driven gear 14. The driven gear 14 is rotatably arranged in the installation box 6. The clutch driving gear 18 is fixed on the electromagnetic clutch 19. The electromagnetic clutch 19 is fixed on the inside of the installation box 6 through bolts.

[0026] As Figure 6As shown, the electromagnetic clutch 19 includes a copper sheet 1901, a coil 1902, a clutch gear shaft 1903, etc.; the copper sheet 1901 is fixed to the clutch driving gear 18 by bolts, and the coil 1902 is fixed to the clutch gear shaft 1903 by bolts. The suction state of the electromagnetic clutch 19 is controlled by a low-voltage current signal; by providing the electromagnetic clutch 19, compared with a manual chuck, a pneumatic chuck or a hydraulic chuck, the labor intensity is reduced, the industrial production efficiency is improved, and it is easy to maintain and has a low cost.

[0027] The driven gear 14 is provided with threaded holes for installing the sixth bolt 17. Specifically, the chuck lead screw 13 is installed above the driven gear 14 through the sixth bolt 17, and the chuck lead screw 13 and the driven gear 14 rotate synchronously.

[0028] Specifically, when a low-voltage current passes through the electromagnetic clutch 19, the copper sheet 1901 is attracted to the coil 1902. At this time, the clutch power device 12 drives the clutch driving gear 18 to rotate, and then drives the driven gear 14 engaged therewith to drive the chuck lead screw 13 to rotate, realizing the centripetal movement of the jaw 1 to lock the welded part or the centrifugal movement to loosen the welded part. When the electromagnetic clutch 19 is not powered on, the copper sheet 1901 is separated from the coil 1902. At this time, the rotating driving gear 20 drives the support outer ring 1603 to rotate, and then drives the jaw 1 to rotate, realizing the rotation of the welded part.

[0029] As Figure 5 and Figure 6 shown, the chuck connection plate 15 is fixed to the support outer ring 1603 by the seventh bolt 21, and the support outer ring 1603 and the chuck connection plate 15 rotate synchronously. The ring gear roller support 22 is fixed to the chuck connection plate 15 by the eighth bolt 23, and the ring gear roller support 22 is in direct contact with the outer surface of the driven gear 14.

[0030] As Figure 7 and Figure 8As shown, the bottom of the jaw 101 is provided with thread teeth, which are threadedly engaged with the T-shaped groove in the chuck thread 13. When the chuck thread 13 rotates, the jaw 101 can be driven to move to realize the clamping and loosening actions. There is a through-thread hole on the right side of the jaw 101 for installing the ninth bolt 102, and the ninth bolt 102 can be set as a top-tightening screw. There is a through-square hole in the middle of the jaw extension 107, and the jaw limit member 106 and the jaw extension 107 are fixed on the jaw 101 through the tenth bolt 105. Specifically, the size of the square hole is slightly larger than the size of the jaw limit member 106. After the jaw limit member 106 passes through the square hole, it is fixed to the jaw 101 through the tenth bolt 105. A limit plate is provided on the upper part of the jaw limit member 106, and the size of the limit plate is larger than the size of the square hole to prevent the jaw limit member 106 from moving out of the square hole. There is a certain gap between the side wall of the jaw limit member 106 and the side wall of the square hole, and the jaw extension 107 can be adjusted left and right relative to the jaw limit member 106. The polyurethane hollow rod 104 and the polyurethane top sheet 103 are inserted into the circular hole on the right side of the jaw extension 107. The polyurethane top sheet 103 is located outside the circular hole, and the polyurethane top sheet 103 is in direct contact with the ninth bolt 102. Specifically, when adjusting the ninth bolt 102, by tightly pressing the polyurethane top sheet 103 and the polyurethane hollow rod 104, one side wall of the square hole above the jaw extension 107 can be made to closely adhere to one side wall of the jaw limit member 106, and there is a certain gap between the other side wall of the square hole above the jaw extension 107 and the other side wall of the jaw limit member 106, realizing small-distance movement compensation. During the welding process, heat can be absorbed through the polyurethane hollow rod 104, allowing the jaw extension 107 to have a certain small-distance compensation relative to the jaw limit member 106, avoiding phenomena such as unstable fixture clamping and chuck jamming caused by thermal deformation during the welding process, effectively reducing the labor intensity, improving the production and processing efficiency, and at the same time improving the welding quality. The jaw extension 107 is connected to the extended jaw 109 through the eleventh bolt 1010, as Figure 1 shown, the welded part fixing block 108 is fixed on the top of the extended jaw 109 through the twelfth bolt 1011. The first adjusting member 1012 and the second adjusting member 1014 are connected through the thirteenth bolt 1013 and can be adjusted up and down in position. The first adjusting member 1012 and the second adjusting member 1014 can adopt structures such as telescopic rods.

[0031] Among them, the size, thickness and cross-sectional area of the polyurethane hollow rod 104 need to be based on the clamping force required for the welded part and the amount of deformation are determined. Among them, the thickness , the cross-sectional area . Among them, is the surface friction coefficient of the welded part; is the coefficient of linear expansion; is the ambient temperature; is the reference temperature; is the stiffness of the elastomer; is the elastic modulus of polyurethane at room temperature; is the axial deformation of the polyurethane hollow rod, 0 , and 2 mm is taken for calculation.

[0032] It can be understood that the thickness and the cross-sectional area of the polyurethane hollow rod 104 are determined according to the clamping force required for the welded part and the amount of deformation, which can enable the polyurethane hollow rod 104 to accurately match the actual deformation requirements of the welded part during the welding process, provide stable buffering and thermal deformation compensation, prevent problems such as the chuck being stuck due to insufficient deformation, make the welding process stable and reliable, and improve the welding quality.

[0033] In this embodiment, the driving force rotating device 10 installed on the speed reducer mounting plate 8 on the back of the mounting box 6 rotates the driving gear 20 to mesh with the support outer ring 1603, and the clutch driving gear 18 of the clutch power device 12 installed on the back of the mounting box 6 meshes with the driven wheel 14. The two meshing relationships cooperate with the attraction and separation of the copper sheet 1901 and the coil 1902 of the electromagnetic clutch 19 controlled by a low-voltage current signal to realize the automatic locking of the electric chuck device. Among them, when the electromagnetic clutch 19 is energized, the copper sheet 1901 of the low-voltage current attracts with the coil 1902, and the electric chuck device works to drive the jaw 1 to move towards the center to lock the welded part. When not energized, the electric chuck drives the jaw 1 to drive the welded part to rotate. In addition, the polyurethane hollow rod 14 inserted into the jaw extension 107 can absorb the thermal deformation generated by the welded part due to heat during the welding process. This embodiment realizes the automatic locking work of the chuck controlled by a low-current signal, and at the same time deals with the adverse effects of unstable fixture clamping and chuck jamming caused by the thermal deformation generated during the welding process, effectively reducing the labor intensity, improving the production and processing efficiency, and at the same time improving the welding quality.

[0034] Embodiment 2: This embodiment provides an electric chuck working method applicable to a hot environment, using the electric chuck applicable to a hot environment described in Embodiment 1, including: respectively realizing the clamping action of the jaw through the clutch power device and the rotating power device, and the welding rotation action after clamping the welded part.

[0035] Example 3: This example provides a welding device that uses the electric chuck applicable to a hot environment as described in Example 1.

[0036] Example 4: This example provides a welding method that uses the welding device as described in Example 3.

[0037] The above are only the preferred examples of this example and are not used to limit this example. For those skilled in the art, this example can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this example shall be included within the protection scope of this example.

Claims

1. An electric chuck applicable to a hot environment, characterized in that, It includes an installation box, as well as a rotary power device and a clutch power device provided on the installation box; The clutch power device includes a clutch driving gear. A driven gear is rotatably provided in the installation box. The clutch driving gear meshes with the driven gear. A chuck wire is provided on the driven gear. The output shaft of the rotary power device is provided with a rotary driving gear. A support outer ring is rotatably provided in the installation box. The support outer ring meshes with the support outer ring. The support outer ring is slidably provided with a chuck through a chuck connecting disc; The chuck is provided with jaws. The bottom of the jaws is provided with thread teeth meshing with the chuck wire. The jaws are provided with polyurethane hollow rods.

2. The electric chuck applicable to a hot environment according to claim 1, wherein The clutch power device is an electromagnetic clutch. The electromagnetic clutch includes copper sheets, coils and a clutch gear shaft; The copper sheets are fixed on the clutch driving gear, and the coils are fixed on the clutch gear shaft.

3. The electric chuck applicable to a hot environment according to claim 1, wherein The jaws include a clamping jaw, a clamping jaw extension and a clamping jaw stopper; Thread teeth are provided at the bottom of the clamping jaw. T-shaped groove threads meshing with the thread teeth are provided on the chuck wire. A ninth bolt is provided on one side of the clamping jaw. The ninth bolt is a tightening screw; A through square hole is provided in the middle of the clamping jaw extension; After the clamping jaw stopper passes through the square hole and contacts the clamping jaw, it is fixed to the clamping jaw by a tenth bolt; The polyurethane hollow rod and the polyurethane top sheet are arranged in a preset circular hole on one side of the clamping jaw extension; The polyurethane top sheet is located outside the circular hole, and the polyurethane top sheet contacts the ninth bolt.

4. The electric chuck applicable to a hot environment according to claim 3, wherein, The size of the square hole is larger than the size of the clamping jaw stopper, and there is a gap between the side wall of the clamping jaw stopper and the side wall of the square hole.

5. The electric chuck applicable to a hot environment according to claim 4, wherein, The clamping jaw extension is connected with an extended clamping jaw by an eleventh bolt.

6. The electric chuck applicable to a hot environment according to claim 5, characterized in that, The thickness of the polyurethane hollow rod is as follows: ； Among them, is the surface friction coefficient of the welded part; is the linear expansion coefficient; is the ambient temperature; is the reference temperature; is the stiffness of the elastomer.

7. The electric chuck applicable to a hot environment according to claim 6, characterized in that, The cross-sectional area of the polyurethane hollow rod is as follows: ； Among them, is the elastic modulus of polyurethane at room temperature; is the axial deformation of the polyurethane hollow rod.

8. The working method of an electric chuck applicable to a hot environment, characterized in that, The electric chuck applicable to a hot environment as described in any one of claims 1-7 is used, including: realizing the clamping action of the jaws respectively through the clutch power device and the rotary power device, and the welding rotation action after clamping the welded part.

9. A welding device, characterized in that, The electric chuck applicable to a hot environment as described in any one of claims 1-7 is used.

10. A welding method, characterized in that, The welding equipment as described in claim 9 is used.

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