Positioning device for assembling power tool holder housing and method of using the same

Abstract

A positioning device for assembling a power tool holder housing and a method of using the same relate to the field of key block technology, comprising a power tool holder housing, a positioning workbench and an elastic key block A, wherein a lower cross keyway is provided on the bottom surface of the power tool holder housing, an upper cross keyway is provided on the top of the positioning workbench, the lower cross keyway and the upper cross keyway are arranged correspondingly up and down, and elastic key blocks A are installed in the keyways in the corresponding four directions; an oblong notch is provided on the upper part of the side surface of the elastic key block body A of the elastic key block A along its length direction, a cylindrical pin is provided in the oblong notch, the opening of the oblong notch is located in the lower cross keyway, two screw holes are provided at intervals on the opposite surfaces where the oblong notch is provided, the elastic screws are respectively passed through the screw holes, and the screw holes are connected to the oblong notch; the structure of the present invention is simple and compact, the precision requirement for the keyway width is not high, the processing yield is improved, and the production cost is greatly reduced compared with the existing technology.

Description

Technical Field

[0001] The present invention relates to the technical field of key blocks, and in particular to a positioning device for assembling a power tool holder housing and a use method thereof. Background Art

[0002] It is well known that the power tool holder currently used in CNC turning and milling compound machine tools has a shell that is positioned mainly by keyway fitting or limiting when boring holes on a double-axis boring machine. The accuracy of this positioning method is mainly dependent on tolerance fitting, and there is inevitably a problem of clearance fitting. This clearance will result in the key block and the slot body not being able to achieve a completely clearance-free fit, thereby affecting the positioning accuracy and repeatability. Moreover, due to the reliance on tolerance fitting, a high requirement is placed on the keyway width accuracy, resulting in an increased scrap rate during machining. A higher level of process is required to ensure machining accuracy, and the production cost is high. If multiple positioning devices are added, the machining operation becomes complicated, the time required for positioning is prolonged, and the production efficiency is low. The same problem also occurs in the use and installation of the power tool holder. The key block in the bottom long slot relies on tolerance fitting and the turret for installation. This method also leads to poor repeatability positioning accuracy, which has a negative impact on the installation accuracy and performance of the power tool holder. Summary of the Invention

[0003] In order to overcome the deficiencies in the background art, the present invention discloses a positioning device for assembling a power tool holder housing and a method for using the same.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0005] A positioning device for assembling a power tool holder shell comprises a power tool holder shell, a positioning workbench and an elastic key block A. A lower cross keyway is provided on the bottom surface of the power tool holder shell, and an upper cross keyway is provided on the top of the positioning workbench. The lower cross keyway and the upper cross keyway are arranged correspondingly up and down, and elastic key blocks A are installed in the keyways in the corresponding four directions; the elastic key block A consists of an elastic key block body A, a cylindrical pin and an elastic screw. An oblong slot is provided on the upper part of the side surface of the elastic key block body A along its length direction, and the longitudinal section of the oblong slot is "C"-shaped. The cylindrical pin is provided in the oblong slot, and the opening of the oblong slot is located in the lower cross keyway. Two screw holes are provided at intervals on the opposite surfaces where the oblong slot is provided, and the elastic screws are respectively passed through the screw holes, and the screw holes are connected to the oblong slot.

[0006] The positioning device for assembling the power tool holder housing is provided with a screw hole A on the upper side of the elastic key block body A near the screw hole, and four bolt mounting holes correspondingly arranged upper and lower are provided on the bottom of the upper cross key slot. The bolt mounting holes are eccentric holes, and the screw holes A on the elastic key block body A correspond to the bolt mounting holes on the bottom of the upper cross key slot and are fixedly connected by bolts.

[0007] A method for using a positioning device for assembling a power tool holder housing, comprising a power tool holder housing, a positioning workbench, and an elastic key block A. The specific operating steps are as follows:

[0008] a. The positioning table is fixed to the processing table through the long bolts in the table mounting holes at the four corners;

[0009] b. Screw the elastic screws into the two screw holes. The elastic screws press against the cylindrical pin in the oblong slot so that the arc surface of the cylindrical pin protrudes 0.08-0.1mm outside the slot.

[0010] c. Place four sets of elastic key block bodies A with cylindrical pins installed into the upper cross keyway on the positioning workbench, with one set placed in each of the four directions of the upper cross keyway. Bolts are passed through the screw holes A on the elastic key block body A and fixed to the bolt mounting holes on the bottom of the upper cross keyway.

[0011] d. Press the power tool holder housing onto the upper part of the four sets of elastic key block bodies A, so that the protruding arc surface of the cylindrical pin contacts one side of the lower cross keyway. The lower cross keyway presses the protruding arc surface and presses it back into the elastic key block body A by 0.089-0.01mm. The keyway tolerance is 0.011-0mm to achieve a gapless fit.

[0012] e. Finally, tighten the clamping screws at the four corners of the power tool holder housing into the four clamping screw holes on the positioning workbench.

[0013] A positioning device for assembling a power tool holder housing comprises a power tool holder housing, a positioning workbench and an elastic key block B. A lower cross keyway is provided on the bottom surface of the power tool holder housing, and an upper cross keyway is provided on the top of the positioning workbench. The lower cross keyway and the upper cross keyway are arranged correspondingly up and down, and elastic key blocks B are installed in the keyways in the corresponding four directions; the elastic key block B consists of an elastic key block body B, a contact plate and an elastic plate. The elastic key block body B is arranged in a square shape, and an inverted "L"-shaped notch is provided on one side surface. In the notch, an elastic plate and a contact plate are arranged in sequence from the inside to the outside. The outer side surface of the contact plate protrudes from the outer side surface of the elastic key block body B by 0.02 mm, and the upper part of the outer side surface of the contact plate is arranged as an inclined surface. The outer side surface of the elastic key block body B and the outer side surface of the contact plate are arranged with an inclined surface transition.

[0014] The positioning device for assembling the power tool holder housing is provided with a screw hole B on the upper side of the elastic key block body B near the screw hole, and four bolt mounting holes correspondingly arranged upper and lower are provided on the bottom of the upper cross key slot. The bolt mounting holes are eccentric holes, and the screw holes B on the elastic key block body B correspond to the bolt mounting holes on the bottom of the upper cross key slot and are fixedly connected by bolts.

[0015] A method for using a positioning device for assembling a power tool holder housing, comprising a power tool holder housing, a positioning workbench, and an elastic key block B. The specific operating steps are as follows:

[0016] a. The positioning table is fixed to the processing table through the long bolts in the mounting holes of the four corner tables;

[0017] b. Place the elastic plate and the contact plate into the notch of the elastic key block body B in sequence, with the outer side of the elastic key block body B and the outer side of the contact plate transitioning in an inclined plane;

[0018] c. Place four sets of installed elastic key blocks B into the upper cross keyway on the positioning workbench, with one set placed in each of the four directions of the upper cross keyway. Bolts pass through the screw holes B of the elastic key block body B and securely connect them with the bolt mounting holes on the bottom of the upper cross keyway.

[0019] d. Press the housing of the power tool holder onto the upper part of the four sets of elastic key block bodies B, so that one side of the lower cross keyway presses the outer side of the contact plate, causing the elastic plate to elastically deform. Press the contact plate protruding from the outer side of the elastic key block body B back into the lower cross keyway by about 0.009-0.02mm, so that both sides of the elastic key block body B completely fit into the lower cross keyway, achieving a gap-free fit.

[0020] e. Tighten the clamping screws at the four corners of the power tool holder housing into the four clamping screw holes on the positioning workbench.

[0021] A positioning device for assembling a power tool holder shell comprises a power tool holder shell, a positioning workbench and an elastic key block C. A lower cross keyway is provided on the bottom surface of the power tool holder shell, and an upper cross keyway is provided on the top of the positioning workbench. The lower cross keyway and the upper cross keyway are arranged correspondingly up and down, and elastic key blocks C are installed in the keyways in the corresponding four directions; the elastic key block C comprises an elastic key block body C and a pressure block. The elastic key block body C is arranged in an "L"-shaped step shape, and the pressure block is arranged on the step surface of the elastic key block body C, forming a square structure with the elastic key block body C, and a semicircular long groove A is provided along the length direction of the inner side surface of the step of the elastic key block body C, a gap is provided between the inner side surface of the step of the elastic key block body C at the upper part of the semicircular long groove A and the pressure block, and the inner side surface of the step of the elastic key block body C at the lower part of the semicircular long groove A is arranged to fit the pressure block.

[0022] The positioning device for assembling the power tool holder housing is provided with a screw hole C on the top of the pressure block, and four bolt mounting holes correspondingly arranged upper and lower are provided on the bottom of the upper cross keyway. The bolt mounting holes are eccentric holes, and the screw hole C on the pressure block corresponds to the bolt mounting hole on the step surface of the elastic key block body C and the bolt mounting hole on the bottom of the upper cross keyway and is fixedly connected by bolts.

[0023] A method for using a positioning device for assembling a power tool holder housing, comprising a power tool holder housing, a positioning workbench, and an elastic key block C. The specific operating steps are as follows:

[0024] a. The positioning table is fixed to the processing table through the long bolts in the mounting holes of the four corner tables;

[0025] b. Place the pressing block on the step surface C of the elastic key block body, and place four sets of installed elastic key blocks C into the upper cross keyway on the positioning workbench, with one set placed in each of the four directions of the upper cross keyway. Bolts are passed through the screw holes C of the pressing block, the bolt mounting holes on the step surface C of the elastic key block body, and the bolt mounting holes on the bottom of the upper cross keyway to securely connect them, so that the lower surface of the inner side of the step C of the elastic key block body fits the pressing block;

[0026] c. Press the housing of the power tool holder onto the upper part of the four sets of elastic key blocks C. The side walls of the lower cross key slot squeeze the elastic key block body C, causing the elastic key block body C to deform toward the inner side of the pressing block. This allows the two side surfaces of the elastic key block C to completely fit with the inner walls of the lower cross key slot, achieving a gap-free fit.

[0027] d. Tighten the clamping screws at the four corners of the power tool holder housing into the four clamping screw holes on the positioning workbench.

[0028] A positioning device for assembling a power tool holder housing comprises a power tool holder housing, a positioning workbench and an elastic key block D. A lower cross keyway is provided on the bottom surface of the power tool holder housing, and an upper cross keyway is provided on the top of the positioning workbench. The lower cross keyway corresponds to the upper cross keyway in upper and lower directions, and elastic key blocks D are installed in the keyways in the corresponding four directions; the elastic key block D comprises an elastic key block body D and a trapezoidal key block. The trapezoidal key block is arranged in a right-angled trapezoid shape that is wide at the top and narrow at the bottom, and a long strip-shaped boss is provided in the middle of the inclined surface of the trapezoidal key block along its length direction. The elastic key block body D is arranged in a right-angled trapezoid shape that is narrow at the top and wide at the bottom, and the lower inclined surface of the boss contacts the inclined surface of the elastic key block body D. A gap is provided between the inclined surface of the upper part of the boss and the inclined surface of the elastic key block body D, and a semicircular long groove B is provided in the middle of the elastic key block body D corresponding to the boss.

[0029] The positioning device for assembling the power tool holder housing is provided with a screw hole D on the top of the trapezoidal key block, and four bolt mounting holes are provided on the bottom of the upper cross keyway corresponding to the screw hole D above and below. The bolt mounting hole is an eccentric hole, and the screw hole D on the trapezoidal key block corresponds to the bolt mounting hole at the bottom of the upper cross keyway and is fixedly connected by bolts.

[0030] A method for using a positioning device for assembling a power tool holder housing, comprising a power tool holder housing, a positioning workbench, and an elastic key block D. The specific operating steps are as follows:

[0031] a. The positioning table is fixed to the processing table through the long bolts in the mounting holes of the four corner tables;

[0032] b. Align the four sets of elastic key block bodies D with the inclined surfaces of the trapezoidal key blocks and place them on the upper cross keyway on the positioning workbench, with one set placed in each of the four directions of the upper cross keyway. At this point, the bottom surface of the trapezoidal key block is higher than the bottom surface of the elastic key block body D. The bottom surface of the elastic key block body D is located at the bottom of the upper cross keyway, while the bottom surface of the trapezoidal key block does not contact the bottom of the upper cross keyway. The top surface of the trapezoidal key block protrudes from the top surface of the elastic key block body D.

[0033] c. Press the bolt in the screw hole D downward, pass through the screw hole D of the elastic trapezoidal key block, and tighten it into the bolt mounting hole of the upper cross keyway. At this time, the trapezoidal key block and the elastic key block body D are pressed tightly. While pressing downward, the trapezoidal key block moves downward, and the elastic key block body D and the lower part of the trapezoidal key block are tightened in the upper cross keyway. The lower cross keyway of the power tool holder housing is pressed against the upper part of the elastic key block body D and the trapezoidal key block. The side wall of the lower cross keyway squeezes the elastic key block body D, and the elastic key block body D is deformed in the direction of the gap between the upper inclined surface of the boss and the inclined surface of the elastic key block body D, so that the two side surfaces of the elastic key block D are completely fitted with the two sides of the inner wall of the lower cross keyway to achieve a gap-free fit.

[0034] d. Tighten the clamping screws at the four corners of the power tool holder housing into the four clamping screw holes on the positioning workbench.

[0035] Due to the adoption of the above technical solution, the present invention has the following beneficial effects:

[0036] The positioning device for assembling the power tool holder housing and the method of using the same described in the present invention, by providing an elastic key block, the elastic key block body of the elastic key block has the ability to deform, and the lower cross key groove on the bottom surface of the positioning workbench is pressed against the upper part of the elastic key block, and the elastic key block body is deformed, so that the surface matching it achieves an interference fit, the positioning accuracy is high, and the installation and disassembly are relatively convenient; the present invention has a simple and compact structure, does not have high requirements on the accuracy of the key groove width, improves the processing yield, and greatly reduces the production cost compared with the existing technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a structural schematic diagram of the elastic key block A of the present invention.

[0038] Figure 2 It is a schematic structural diagram of the cylindrical pin on the elastic key block A of the present invention.

[0039] Figure 3 It is an assembly diagram of solution 1 of the present invention.

[0040] Figure 4 It is a structural diagram of the elastic key block B of the present invention.

[0041] Figure 5 It is an assembly diagram of the second solution of the present invention.

[0042] Figure 6 It is a structural schematic diagram of the elastic key block C of the present invention.

[0043] Figure 7 It is a front view of the elastic key block C of the present invention.

[0044] Figure 8 yes Figure 7 Magnified view of site A.

[0045] Figure 9 It is an assembly diagram of scheme three of the present invention.

[0046] Figure 10 It is a structural diagram of the elastic key block D of the present invention.

[0047] Figure 11 It is a front view of the elastic key block D of the present invention.

[0048] Figure 12 This is an assembly diagram of the fourth solution of the present invention.

[0049] In the figure: 1. elastic screw; 2. elastic key block body A; 3. screw hole A; 4. oblong slot; 5. cylindrical pin; 6. opening; 7. power tool holder housing; 8. lower cross keyway; 9. upper cross keyway; 10. elastic key block A; 11. positioning workbench; 12. screw hole B; 13. elastic key block body B; 14. contact plate; 15. elastic plate; 16. elastic key block B; 17. screw hole C; 18. pressure block; 19. elastic key block body C; 20. semicircular long slot A; 21. elastic key block C; 22. trapezoidal key block; 23. elastic key block D; 24. elastic key block body D; 25. semicircular long slot B; 26. boss; 27. screw hole D; 28. clamping screw; 29. ​​clamping screw hole; 30. workbench mounting hole; 31. pin hole. DETAILED DESCRIPTION

[0050] The present invention can be explained in detail by the following examples, the purpose of which is to disclose the present invention and to protect all technical improvements within the scope of the present invention.

[0051] Combined with attachment Figure 1-3 The positioning device for assembling the power tool holder housing includes a power tool holder housing 7, a positioning workbench 11 and an elastic key block A10. A lower cross key groove 8 is provided on the bottom surface of the power tool holder housing 7, and an upper cross key groove 9 is provided on the top of the positioning workbench 11. The lower cross key groove 8 and the upper cross key groove 9 are arranged correspondingly up and down, and elastic key blocks A10 are installed in the key grooves in the corresponding four directions; the elastic key block A10 is composed of an elastic key block body A2, a cylindrical pin 5 and an elastic screw 1. An oblong slot 4 is provided on the upper part of the side surface of the elastic key block body A2 along its length direction. The longitudinal section of the oblong slot 4 is "C" shaped. The cylindrical pin 5 is arranged in the oblong slot 4, and the opening 6 of the oblong slot 4 is located in the lower cross key groove 8. Two screw holes are provided at intervals on the opposite surfaces where the oblong slot 4 is provided. The elastic screws 1 are respectively passed through the screw holes, and the screw holes are connected to the oblong slot 4.

[0052] Furthermore, a screw hole A3 is provided on one side of the upper side of the elastic key block body A2 near the screw hole, and four bolt mounting holes correspondingly arranged upper and lower are provided on the bottom of the upper cross key slot 9. The bolt mounting holes are eccentric holes, and the screw holes A3 on the elastic key block body A2 correspond to the bolt mounting holes on the bottom of the upper cross key slot 9 and are fixedly connected by bolts.

[0053] Combined with attachment Figure 1-3 The method for using the positioning device includes a power tool holder housing 7, a positioning workbench 11 and an elastic key block A10. The specific operation steps are as follows:

[0054] a. The positioning table 11 is fixed to the processing table by long bolts in the table mounting holes 30 at the four corners;

[0055] b. Screw the elastic screws 1 into the two screw holes. The elastic screws 1 press against the cylindrical pin 5 in the oblong slot 4, so that the arc surface of the cylindrical pin 5 protrudes out of the opening 6 by 0.08-0.1mm.

[0056] c. Place four sets of elastic key block bodies A2 with cylindrical pins 5 installed into the upper cross keyway 9 on the positioning workbench 11, with one set placed in each of the four directions of the upper cross keyway 9. Bolts are passed through the screw holes A3 on the elastic key block body A2 and fixed to the bolt mounting holes on the bottom of the upper cross keyway 9.

[0057] d. Press the power tool holder housing 7 onto the upper part of the four sets of elastic key block bodies A2, so that the arc surface portion of the cylindrical pin 5 protruding from the opening 6 contacts one side of the lower cross keyway 8. The lower cross keyway 8 presses the protruding arc surface portion and presses it back into the elastic key block body A2 by 0.089-0.01mm. The keyway tolerance is 0.011-0mm, achieving a gapless fit.

[0058] e. Finally, tighten the clamping screws 28 at the four corners of the power tool holder housing 7 into the four clamping screw holes 29 on the positioning workbench 11 to tighten and fix during processing.

[0059] Combined with attachment Figure 4-5 A positioning device for assembling a power tool holder housing comprises a power tool holder housing 7, a positioning workbench 11 and an elastic key block B16. A lower cross keyway 8 is provided on the bottom surface of the power tool holder housing 7, and an upper cross keyway 9 is provided on the top of the positioning workbench 11. The lower cross keyway 8 and the upper cross keyway 9 are arranged correspondingly up and down, and elastic key blocks B16 are installed in the keyways in the corresponding four directions; the elastic key block B16 consists of an elastic key block body B13, a contact plate 14 and an elastic plate 15. The elastic key block body B13 is arranged in a square shape, and an inverted "L"-shaped notch is provided on one side. In the notch, an elastic plate 15 and a contact plate 14 are provided in sequence from the inside to the outside. The outer side surface of the contact plate 14 protrudes from the outer side surface of the elastic key block body B13 by 0.02 mm. The upper part of the outer side surface of the contact plate 14 is arranged as an inclined surface, and the outer side surface of the elastic key block body B13 and the outer side surface of the contact plate 14 are arranged with an inclined surface transition.

[0060] Furthermore, a screw hole B12 is provided on one side of the upper side of the elastic key block body B13 near the screw hole, and four bolt mounting holes correspondingly arranged upper and lower are provided on the bottom of the upper cross key slot 9. The bolt mounting holes are eccentric holes, and the screw holes B12 on the elastic key block body B13 correspond to the bolt mounting holes on the bottom of the upper cross key slot 9 and are fixedly connected by bolts.

[0061] Combined with attachment Figure 4-5 The method for using the positioning device includes a power tool holder housing 7, a positioning workbench 11 and an elastic key block B16. The specific operation steps are as follows:

[0062] a. The positioning table 11 is fixed to the processing table by long bolts in the four corner table mounting holes 30;

[0063] b. Place the elastic plate 15 and the contact plate 14 into the notch of the elastic key block body B13 in sequence, with the outer side of the elastic key block body B13 and the outer side of the contact plate 14 transitioning with an inclined surface;

[0064] c. Place four sets of installed elastic key blocks B16 into the upper cross key slot 9 on the positioning workbench 11, with one set placed in each of the four directions of the upper cross key slot 9. Bolts are passed through the screw holes B12 of the elastic key block body B13 and fixedly connected to the bolt mounting holes at the bottom of the upper cross key slot 9.

[0065] d. Press the power tool holder housing 7 onto the upper portion of the four sets of elastic key block bodies B13, so that one side of the lower cross key slot 8 presses the outer side of the contact plate 14, causing the elastic plate 15 to elastically deform. Press the contact plate 14 protruding from the outer side of the elastic key block body B13 back into the lower cross key slot 8 by approximately 0.009-0.02mm, thereby making both sides of the elastic key block body B13 completely fit into the key slot, achieving a gapless fit.

[0066] e. Tighten the clamping screws 28 at the four corners of the power tool holder housing 7 into the four clamping screw holes 29 on the positioning workbench 11 to tighten and fix during processing.

[0067] Combined with attachment Figure 6-9 The positioning device for assembling the power tool holder housing includes a power tool holder housing 7, a positioning workbench 11 and an elastic key block C21. A lower cross key groove 8 is provided on the bottom surface of the power tool holder housing 7, and an upper cross key groove 9 is provided on the top of the positioning workbench 11. The lower cross key groove 8 and the upper cross key groove 9 are arranged correspondingly up and down, and elastic key blocks C21 are installed in the key grooves in the corresponding four directions; the elastic key block C21 includes an elastic key block body C19 and a pressure block 18. The elastic key block body C19 is arranged in an "L"-shaped step shape. The pressure block 18 is arranged on the step surface of the elastic key block body C19 and forms a square structure with the elastic key block body C19. A semicircular long groove A20 is provided along the length direction of the inner side surface of the step of the elastic key block body C19. A gap is provided between the inner side surface of the step of the elastic key block body C19 at the upper part of the semicircular long groove A20 and the pressure block 18, and the inner side surface of the step of the elastic key block body C19 at the lower part of the semicircular long groove A20 is fitted with the pressure block 18.

[0068] Furthermore, a screw hole C17 is provided on the top of the pressure block 18, and four bolt mounting holes correspondingly arranged upper and lower are provided on the bottom of the upper cross keyway 9. The bolt mounting holes are eccentric holes, and the screw hole C17 on the pressure block 18 corresponds to the bolt mounting holes on the step surface of the elastic key block body C19 and the bolt mounting holes on the bottom of the upper cross keyway 9 and are fixedly connected by bolts.

[0069] Combined with attachment Figure 6-9 The method for using the positioning device includes a power tool holder housing 7, a positioning workbench 11 and an elastic key block C21. The specific operation steps are as follows:

[0070] a. The positioning table 11 is fixed to the processing table by long bolts in the four corner table mounting holes 30;

[0071] b. Place the pressing block 18 on the stepped surface of the elastic key block body C19, and place four sets of installed elastic key blocks C21 into the upper cross key slot 9 on the positioning workbench 11, with one set placed in each of the four directions of the upper cross key slot 9. Bolts are passed through the screw holes C17 of the pressing block 18, the bolt mounting holes on the stepped surface of the elastic key block body C19, and the bolt mounting holes on the bottom of the upper cross key slot 9 to securely connect them, so that the lower surface of the inner side of the stepped surface of the elastic key block body C19 fits in contact with the pressing block 18.

[0072] c. Press the power tool holder housing 7 onto the upper portion of the four sets of elastic key blocks C21. The side walls of the lower cross key slot 8 squeeze the elastic key block body C19, causing the elastic key block body C19 to deform toward the inner side of the pressing block 18. This allows the side surfaces of the elastic key block C21 to completely fit against the inner walls of the lower cross key slot 8, achieving a gap-free fit.

[0073] d. Tighten the clamping screws 28 at the four corners of the power tool holder housing 7 into the four clamping screw holes 29 on the positioning workbench 11 to tighten and fix during processing.

[0074] Combined with attachment Figure 10-12 The positioning device for assembling the power tool holder housing includes a power tool holder housing 7, a positioning workbench 11 and an elastic key block D23. A lower cross key groove 8 is provided on the bottom surface of the power tool holder housing 7, and an upper cross key groove 9 is provided on the top of the positioning workbench 11. The lower cross key groove 8 and the upper cross key groove 9 are arranged in correspondence with each other in the upper and lower directions. The elastic key block D23 is installed in the key grooves in the corresponding four directions; the elastic key block D23 includes an elastic key block body D24 and a trapezoidal key block 22. The trapezoidal key block 22 is configured to be a right-angled trapezoid that is wide at the top and narrow at the bottom. A long strip-shaped boss 26 is provided along its length in the middle of the inclined surface of the trapezoidal key block 22. The elastic key block body D24 is configured to be a right-angled trapezoid that is narrow at the top and wide at the bottom. The lower inclined surface of the boss 26 contacts the inclined surface of the elastic key block body D24. A gap is provided between the upper inclined surface of the boss 26 and the inclined surface of the elastic key block body D24. A semicircular long groove B25 is provided in the middle of the elastic key block body D24 corresponding to the boss 26.

[0075] Furthermore, a screw hole D27 is provided on the top of the trapezoidal key block 22, and four bolt mounting holes correspondingly arranged upper and lower are provided on the bottom of the upper cross key slot 9. The bolt mounting holes are eccentric holes, and the screw hole D27 on the trapezoidal key block 22 corresponds to the bolt mounting holes at the bottom of the upper cross key slot 9 and is fixedly connected by bolts.

[0076] Combined with attachment Figure 10-12The method for using the positioning device includes a power tool holder housing 7, a positioning workbench 11 and an elastic key block D23. The specific operation steps are as follows:

[0077] a. The positioning table 11 is fixed to the processing table by long bolts in the four corner table mounting holes 30;

[0078] b. Place four sets of elastic key block bodies D24 and trapezoidal key blocks 22, with their inclined surfaces aligned, on the upper cross keyway 9 on the positioning workbench 11, with one set placed in each of the four directions of the upper cross keyway 9. At this point, the bottom surface of the trapezoidal key block 22 is higher than the bottom surface of the elastic key block body D24. The bottom surface of the elastic key block body D24 is located at the bottom of the upper cross keyway 9, while the bottom surface of the trapezoidal key block 22 does not contact the bottom of the upper cross keyway 9. The top surface of the trapezoidal key block 22 protrudes from the top surface of the elastic key block body D24.

[0079] c. The bolt in the screw hole D27 is pressed downward, passes through the screw hole D27 of the elastic trapezoidal key block 22, and is tightened into the bolt mounting hole of the upper cross keyway 9. At this time, the trapezoidal key block 22 is pressed tightly against the elastic key block body D24. While pressing downward, the trapezoidal key block 22 moves downward, and the elastic key block body D24 and the lower part of the trapezoidal key block 22 are tightened in the upper cross keyway 9, pressing the lower cross keyway 8 of the power tool holder housing 7 onto the upper part of the elastic key block body D24 and the trapezoidal key block 22. The side wall of the lower cross keyway 8 squeezes the elastic key block body D24, and the elastic key block body D24 is deformed in the direction of the gap between the upper inclined surface of the boss 26 and the inclined surface of the elastic key block body D24, so that the two side surfaces of the elastic key block D23 are completely fitted with the two sides of the inner wall of the lower cross keyway 8 to achieve a gapless fit.

[0080] d. Tighten the clamping screws 28 at the four corners of the power tool holder housing 7 into the four clamping screw holes 29 on the positioning workbench 11 to tighten and fix during processing.

[0081] In the above four embodiments, two pin holes 31 are symmetrically arranged on the positioning workbench 11, and a pin is provided in the pin hole 31. A lifting mechanism is provided at the lower part of the processing table. The lifting mechanism is a prior art. After the tool holder processing is completed, the power tool holder shell needs to be removed. The lifting mechanism only needs to be activated to push the lifting end upward to push the pin in the pin hole 31 upward, thereby ejecting the power tool holder shell.

[0082] The parts not described in detail in this invention are prior art.

[0083] The embodiments selected herein for the purpose of disclosing the invention are presently considered suitable, but it should be understood that the invention is intended to include all variations and modifications of the embodiments that fall within the scope of the concept and invention.

Claims

1. A positioning method for a positioning device for assembling a power tool holder housing, the method employing a positioning device for assembling a power tool holder housing, the positioning device comprising a power tool holder housing, a positioning workbench, and an elastic key block A, characterized in that: A lower cross keyway is provided on the bottom surface of the power tool holder shell, and an upper cross keyway is provided on the top of the positioning workbench. The lower cross keyway and the upper cross keyway are arranged correspondingly up and down, and elastic key blocks A are installed in the keyways in the corresponding four directions; the elastic key block A consists of an elastic key block body A, a cylindrical pin and an elastic screw, and an elongated circular slot is provided on the upper part of the side surface of the elastic key block body A along its length direction, and the longitudinal section of the elongated circular slot is "C"-shaped. The cylindrical pin is arranged in the elongated circular slot, and the opening of the elongated circular slot is located in the lower cross keyway. Two screw holes are provided at intervals on the opposite surface of the elongated circular slot, and the elastic screws are respectively passed through the screw holes, and the screw holes are connected to the elongated circular slot; screw holes A are provided on one side of the upper side of the elastic key block body A near the screw hole, and four bolt mounting holes correspondingly arranged up and down are provided on the bottom of the upper cross keyway. The bolt mounting holes are eccentric holes, and the screw holes A on the elastic key block body A correspond to the bolt mounting holes on the bottom of the upper cross keyway and are fixed by bolts; The specific steps are: a. The positioning table is fixed to the processing table through the long bolts in the table mounting holes at the four corners; b. Screw the elastic screws into the two screw holes. The elastic screws press against the cylindrical pin in the oblong slot so that the arc surface of the cylindrical pin protrudes 0.08-0.1mm outside the slot. c. Place four sets of elastic key block bodies A with cylindrical pins installed into the upper cross keyway on the positioning workbench, with one set placed in each of the four directions of the upper cross keyway. Bolts are passed through the screw holes A on the elastic key block body A and fixed to the bolt mounting holes on the bottom of the upper cross keyway. d. Press the power tool holder housing onto the upper part of the four sets of elastic key block bodies A, so that the protruding arc surface of the cylindrical pin contacts one side of the lower cross keyway. The lower cross keyway presses the protruding arc surface and presses it back into the elastic key block body A by 0.089-0.01mm. The keyway tolerance is 0.011-0mm to achieve a gapless fit. e. Finally, tighten the clamping screws at the four corners of the power tool holder housing into the four clamping screw holes on the positioning workbench.

2. A positioning method for a positioning device for assembling a power tool holder housing, the method employing a positioning device for assembling a power tool holder housing, the positioning device comprising a power tool holder housing, a positioning workbench, and an elastic key block D, characterized in that: The utility model comprises a power tool holder housing, a positioning workbench and an elastic key block D. A lower cross keyway is provided on the bottom surface of the power tool holder housing, an upper cross keyway is provided on the top of the positioning workbench, the lower cross keyway and the upper cross keyway are arranged correspondingly up and down, and elastic key blocks D are installed in the keyways in the corresponding four directions; the elastic key block D comprises an elastic key block body D and a trapezoidal key block, the trapezoidal key block is arranged in a right-angled trapezoid shape with a wide upper part and a narrow lower part, a long strip-shaped boss is provided in the middle of the inclined surface of the trapezoidal key block along its length direction, and the elastic key block body D is arranged to be narrow at the upper part and narrow at the lower part. The lower part is a right-angled trapezoidal shape with a wide bottom. The lower inclined surface of the boss contacts the inclined surface of the elastic key block body D. A gap is provided between the inclined surface of the upper part of the boss and the inclined surface of the elastic key block body D. A semicircular long groove B is provided in the middle of the elastic key block body D corresponding to the boss. A screw hole D is provided on the top of the trapezoidal key block, and four bolt mounting holes are provided on the bottom of the upper cross keyway, which are arranged above and below the screw holes D. The bolt mounting holes are eccentric holes, and the screw holes D on the trapezoidal key block correspond to the bolt mounting holes at the bottom of the upper cross keyway and are fixed together by bolts. The specific steps are: a. The positioning table is fixed to the processing table through the long bolts in the mounting holes of the four corner tables; b. Align the four sets of elastic key block bodies D with the inclined surfaces of the trapezoidal key blocks and place them on the upper cross keyway on the positioning workbench, with one set placed in each of the four directions of the upper cross keyway. At this point, the bottom surface of the trapezoidal key block is higher than the bottom surface of the elastic key block body D. The bottom surface of the elastic key block body D is located at the bottom of the upper cross keyway, while the bottom surface of the trapezoidal key block does not contact the bottom of the upper cross keyway. The top surface of the trapezoidal key block protrudes from the top surface of the elastic key block body D. c. Press the bolt in the screw hole D downward, pass through the screw hole D of the elastic trapezoidal key block, and tighten it into the bolt mounting hole of the upper cross keyway. At this time, the trapezoidal key block and the elastic key block body D are pressed tightly. While pressing downward, the trapezoidal key block moves downward, and the elastic key block body D and the lower part of the trapezoidal key block are tightened in the upper cross keyway. The lower cross keyway of the power tool holder housing is pressed against the upper part of the elastic key block body D and the trapezoidal key block. The side wall of the lower cross keyway squeezes the elastic key block body D, and the elastic key block body D is deformed in the direction of the gap between the upper inclined surface of the boss and the inclined surface of the elastic key block body D, so that the two side surfaces of the elastic key block D are completely fitted with the two sides of the inner wall of the lower cross keyway to achieve a gap-free fit. d. Tighten the clamping screws at the four corners of the power tool holder housing into the four clamping screw holes on the positioning workbench.

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