Five-shaft-head assembling mechanism

Abstract

The utility model relates to a five-shaft-head assembling mechanism, and belongs to the technical field of five shaft heads, the five-shaft-head assembling mechanism comprises a shell, the shell is provided with a mounting groove allowing a main shaft to be inserted therein, one side of the shell is provided with a first mounting port, the other side of the shell is provided with a second mounting port, the second mounting port is internally provided with an adjusting flange, and the adjusting flange is provided with a first threaded hole; an adjusting sleeve is sleeved with the second mounting opening, positioning holes are formed in the adjusting sleeve, and the positioning holes correspond to the first threaded holes one to one and communicate with the first threaded holes; a second threaded hole is formed in the adjusting sleeve, the second threaded hole and the adjusting flange are oppositely arranged, and an injection molding space is reserved between the adjusting sleeve and the second installation opening. The five-shaft-head machining device has the advantages that the coaxiality of the two A-shaft connecting shafts assembled on the five-shaft-head shell is improved, and then the five-shaft-head machining precision is improved.

Description

Technical Field

[0001] The present application relates to the technical field of five-axis heads, and in particular to an assembly mechanism of a five-axis head. Background Art

[0002] The five-axis head is an important component of the five-axis linkage machine tool. The spindle of the five-axis head is usually connected to two A-axis connecting shafts installed on the five-axis head housing, so as to realize the installation of the spindle on the five-axis head housing. By driving an A-axis connecting shaft to rotate, the five-axis head spindle can be driven to rotate around the X-axis.

[0003] The existing connection method between the A-axis connecting shaft and the five-axis head housing is usually: mounting holes adapted to the A-axis connecting shaft are opened on both sides of the five-axis head housing, and the two A-axis connecting shafts are respectively inserted into the mounting holes on both sides of the five-axis head housing and fixed with the five-axis head housing bolts.

[0004] With regard to the above-mentioned related technologies, when processing a large-sized five-axis head housing, due to the large span on both sides of the five-axis head, the coaxiality of the mounting holes on both sides of the five-axis head housing is difficult to ensure, and the verticality of the two sides of the five-axis head housing with the mounting holes is also difficult to ensure consistency, which further affects the coaxiality of the two mounting holes, thereby affecting the coaxiality of the two A-axis connecting shafts, and then affecting the spindle's inability to accurately rotate around the X-axis, affecting the accuracy of the five-axis head processing. Utility Model Content

[0005] In order to improve the coaxiality of two A-axis connecting shafts assembled on the five-axis head housing, and thus improve the machining accuracy of the five-axis head, the present application provides an assembly mechanism for a five-axis head.

[0006] The five-axis head assembly mechanism provided in this application adopts the following technical solution:

[0007] An assembly mechanism for a five-axis head comprises a housing, the housing is provided with a mounting groove for inserting a spindle, one side of the housing is provided with a first mounting opening, the other side of the housing is provided with a second mounting opening, an adjusting rib is provided in the second mounting opening, a first threaded hole is provided on the adjusting rib, an adjusting sleeve is sleeved in the second mounting opening, a positioning hole is provided on the adjusting sleeve, the positioning hole corresponds to and is connected with the first threaded hole in a one-to-one manner;

[0008] The adjusting sleeve is provided with a second threaded hole, the second threaded hole is arranged opposite to the adjusting rib, and an injection molding space is reserved between the adjusting sleeve and the second mounting opening.

[0009] By adopting the above technical solution, the adjustment sleeve is inserted into the second installation opening, and the positioning hole is aligned with the corresponding first threaded hole, and then a bolt is passed through the positioning hole and threaded into the first threaded hole to form a pre-positioning of the adjustment sleeve;

[0010] Subsequently, a bolt is threadedly connected with the second threaded hole and the bolt is pressed against the adjusting rib, and the adjusting sleeve is made coaxial with the first mounting opening by fine-tuning the bolt in the positioning hole and the bolt in the second threaded hole, and finally, injection molding is performed into the injection molding space to fix the adjusting sleeve in the second mounting opening;

[0011] When installing the A-axis connecting shaft, the two A-axis connecting shafts are respectively installed in the first installation port and the adjustment sleeve, which can improve the coaxiality of the two A-axis connecting shafts assembled on the five-axis head housing, thereby improving the processing accuracy of the five-axis head.

[0012] Optionally, the adjusting rib has a first threaded hole at an interval of 20° around its center, the adjusting sleeve has a positioning hole at an interval of 20° around its center, and the adjusting sleeve has a second threaded hole at an interval of 60° around its center.

[0013] By adopting the above technical solution, the equidistant arrangement of the plurality of first threaded holes, the positioning holes and the second threaded holes enables the adjustment sleeve to be adjusted at multiple points, thereby further improving the coaxiality between the adjustment sleeve and the first mounting opening.

[0014] Optionally, a first mounting rib is provided in the first mounting opening, a second mounting rib is provided on the inner wall of the adjusting sleeve, an A-axis connecting shaft is penetrated by the first mounting opening and the adjusting sleeve, a limiting ring groove is provided on the A-axis connecting shaft, and both the first mounting rib and the second mounting rib can be inserted into the corresponding limiting ring groove;

[0015] After the A-axis connecting shaft and the main shaft are installed, the first mounting rib and the second mounting rib both have movement space with the corresponding limiting ring grooves.

[0016] By adopting the above technical solution, the A-axis connecting shaft is first installed in the housing for pre-positioning. Due to the existence of the moving space, the two A-axis connecting shafts can be pulled away from each other, so that the limiting ring grooves of the two A-axis connecting shafts are respectively abutted against the first mounting rib and the second mounting rib, and then the main shaft is inserted into the mounting groove, and then the two A-axis connecting shafts are pushed close to each other to clamp the main shaft;

[0017] Similarly, when disassembling the main shaft, it is only necessary to pull the two A-axis connecting shafts away from each other, and the main shaft can be pulled out from between the two A-axis connecting shafts, thereby facilitating the installation and disassembly of the A-axis connecting shafts and the main shaft.

[0018] Optionally, the first mounting rib is provided with a first mounting hole for fixing the bearing, and the second mounting rib is provided with a second mounting hole for fixing the bearing.

[0019] Optionally, an assembly groove is provided in the shell, a fixing plate is connected to the shell, and the motor can be placed in the assembly groove and connected to the fixing plate.

[0020] By adopting the above technical solution, the motor can be installed in the assembly groove. Compared with the traditional five-axis head mounting shell in which the motor is installed on the side covers on both sides of the five-axis head mounting shell, the design size of the shell can be reduced, thereby making the two sides of the shell closer, so that the coaxiality of the first mounting port and the second mounting port can be further ensured during processing.

[0021] Optionally, the mounting shell is provided with a gear mounting hole for mounting the gear connecting shaft.

[0022] By adopting the above technical solution, if a servo motor plus a gear set is used to drive the A-axis connecting shaft to rotate, an idler gear can be installed in the housing through the gear mounting hole, thereby appropriately reducing the size of the driving gear and the driven gear and reducing the space occupied by the gear in the housing.

[0023] Optionally, there are two assembly grooves.

[0024] By adopting the above technical solution, when two motors are needed to respectively drive an A-axis connecting shaft to rotate, the two motors can be installed in two assembly grooves respectively.

[0025] Optionally, a cushion block is provided in the shell, the cushion block is connected to an A-axis reading head bracket, and the A-axis reading head bracket is provided with an A-axis encoder reading head for measuring the rotation angle of the A-axis connecting shaft.

[0026] By adopting the above technical solution, the A-axis encoder reading head can measure the angle of rotation of the A-axis connecting shaft, thereby improving the control of the rotation angle of the A-axis connecting shaft. The spacer block can adjust the distance between the A-axis reading head bracket and the A-axis connecting shaft and bearing, thereby avoiding interference between the A-axis reading head bracket and the A-axis connecting shaft and bearing.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. Insert the adjustment sleeve into the second mounting opening, align the positioning hole with the corresponding first threaded hole, and then pass the bolt through the positioning hole and thread it into the first threaded hole to form a pre-positioning of the adjustment sleeve;

[0029] Subsequently, a bolt is threadedly connected with the second threaded hole and the bolt is pressed against the adjusting rib, and the adjusting sleeve is made coaxial with the first mounting opening by fine-tuning the bolt in the positioning hole and the bolt in the second threaded hole, and finally, injection molding is performed into the injection molding space to fix the adjusting sleeve in the second mounting opening;

[0030] When installing the A-axis connecting shaft, the two A-axis connecting shafts are installed in the first installation opening and the adjustment sleeve respectively, so that the coaxiality of the two A-axis connecting shafts assembled on the five-axis head housing can be improved, thereby improving the processing accuracy of the five-axis head;

[0031] 2. First, install the A-axis connecting shaft into the housing for pre-positioning. Due to the existence of the moving space, the two A-axis connecting shafts can be pulled away from each other, so that the limiting ring grooves of the two A-axis connecting shafts are respectively abutted against the first mounting rib and the second mounting rib, and then the main shaft is inserted into the mounting groove, and then the two A-axis connecting shafts are pushed close to each other to clamp the main shaft;

[0032] Similarly, when disassembling the main shaft, it is only necessary to pull the two A-axis connecting shafts away from each other, and the main shaft can be pulled out from between the two A-axis connecting shafts, thereby facilitating the installation and disassembly of the A-axis connecting shafts and the main shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0034] Figure 2 It is a schematic diagram of the structure of the first threaded hole, the second threaded hole and the positioning hole used in the embodiment of the present application.

[0035] Figure 3 yes Figure 2 Enlarged schematic diagram of part A.

[0036] Explanation of the reference numerals: 1. Shell; 11. Mounting groove; 12. First mounting port; 13. Second mounting port; 14. Assembly groove; 15. Fixed plate; 16. Gear mounting hole; 17. Spacer; 18. A-axis reading head bracket; 19. A-axis encoder reading head; 2. Adjusting rib; 21. First threaded hole; 3. Adjusting sleeve; 31. Positioning hole; 32. Second threaded hole; 4. Injection molding space; 5. First mounting rib; 51. First mounting hole; 6. Second mounting rib; 61. Second mounting hole; 7. A-axis connecting shaft; 71. Limiting ring groove; 8. Moving space. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1-3 This application is described in further detail.

[0038] The embodiment of the present application discloses an assembly mechanism of a five-axis head.

[0039] like Figure 1 , Figure 2 and Figure 3 The assembly mechanism of the five-axis head includes a housing 1, the housing 1 is provided with a mounting groove 11 for inserting the spindle, the longitudinal section of the housing 1 is a concave groove, and the two side walls of the mounting groove 11 are respectively provided with a first mounting opening 12 and a second mounting opening 13, the first mounting opening 12 and the second mounting opening 13 are both circular openings, and the size of the second mounting opening 13 is larger than the size of the first mounting opening 12;

[0040] An adjusting rib 2 is provided in the second mounting opening 13. The adjusting rib 2 is integrally formed with the housing 1. The adjusting rib 2 is an annular ring and is adapted to the second mounting opening 13. The end surface of the adjusting rib 2 facing the first mounting opening 12 is provided with 18 first threaded holes 21. The 18 first threaded holes 21 are equidistantly arranged along the circumference of the adjusting rib 2.

[0041] An adjusting sleeve 3 is sleeved in the second mounting port 13. The adjusting sleeve 3 is an annular sleeve. The adjusting sleeve 3 is adapted to the second mounting port 13. The end surface of the adjusting sleeve 3 facing the first mounting port 12 is provided with 18 positioning holes 31 and 6 second threaded holes 32. The 18 positioning holes 31 are equidistantly arranged along the circumference of the adjusting sleeve 3, and the 6 second threaded holes 32 are equidistantly arranged along the circumference of the adjusting sleeve 3. There are three positioning holes 31 between two adjacent second threaded holes 32. The positioning holes 31 correspond to the first threaded holes 21 one by one and are connected. The second threaded holes 32 are arranged opposite to the adjusting rib 2. An injection molding space 4 is reserved between the adjusting sleeve 3 and the second mounting port 13.

[0042] A first mounting rib 5 is provided in the first mounting opening 12 , the first mounting rib 5 is an annular ring and is adapted to the first mounting opening 12 , the first mounting rib 5 is integrally formed with the shell 1 , and a second mounting rib 6 is integrally formed on the inner wall of the adjustment sleeve 3 , and the second mounting rib 6 is an annular ring.

[0043] The two A-axis connecting shafts 7 pass through the first mounting opening 12 and the adjusting sleeve 3 respectively. The A-axis connecting shaft 7 is provided with a limiting ring groove 71. One side of the first mounting rib 5 and one side of the second mounting rib 6 are located in the corresponding limiting ring groove 71. The two A-axis connecting shafts 7 are connected to the main shaft. The first mounting rib 5 and the second mounting rib 6 both leave moving space 8 with the corresponding limiting ring groove 71.

[0044] A plurality of first mounting holes 51 for fixing the bearing are formed on a side of the first mounting rib 5 away from the first mounting opening 12, and the plurality of first mounting holes 51 are equidistantly arranged circumferentially along the first mounting rib 5. A plurality of second mounting holes 61 for fixing the bearing are formed on a side of the second mounting rib 6 away from the second mounting opening 13, and the plurality of second mounting holes 61 are equidistantly arranged circumferentially along the second mounting rib 6.

[0045] Two assembly grooves 14 are provided in the shell 1. The two assembly grooves 14 are located above the mounting groove 11, and the assembly grooves 14 are located between the first mounting port 12 and the second mounting port 13. Both sides of the shell 1 are bolted with fixing plates 15. The fixing plates 15 correspond to the assembly grooves 14 one by one. The motor can be placed in the mounting groove 11 and connected to the fixing plates 15.

[0046] Gear mounting holes 16 for mounting the gear connecting shaft are provided on both sides of the housing 1 , and the gear mounting holes 16 are located below the assembly slot 14 .

[0047] One side of the shell 1 having the second mounting opening 13 is bolted with three pads 17, wherein two pads 17 are respectively located on one side of the second mounting opening 13, and the other pad 17 is located below the second mounting opening 13. The three pads 17 are bolted together with an A-axis reading head bracket 18, which is a triangular plate, and an A-axis encoder reading head 19 for measuring the rotation angle of the A-axis connecting shaft 7 is bolted on the A-axis reading head bracket 18.

[0048] Before installing the A-axis connecting shaft 7 and the main shaft, first insert the adjustment sleeve 3 into the second installation opening 13, and align the positioning hole 31 with the corresponding first threaded hole 21, and then pass the bolt through the positioning hole 31 and thread it into the first threaded hole 21 to form a pre-positioning of the adjustment sleeve 3;

[0049] Subsequently, a bolt is threadedly connected with the second threaded hole 32 and the bolt is pressed against the adjusting rib 2, and then the bolt in the positioning hole 31 is finely adjusted and the bolt in the second threaded hole 32 is used to make the adjusting sleeve 3 coaxial with the first mounting opening 12, and finally, injection molding is performed into the injection molding space 4 to fix the adjusting sleeve 3 in the second mounting opening 13;

[0050] When installing the A-axis connecting shaft 7 and the main shaft, first extend the A-axis connecting shaft 7 into the installation groove 11, and then respectively pass the two A-axis connecting shafts 7 through the first installation port 12 and the adjusting sleeve 3, install bearings on the two A-axis connecting shafts 7, and then pull the two A-axis connecting shafts 7 away from each other, so that the limiting ring grooves 71 of the two A-axis connecting shafts 7 are respectively in contact with the first installation rib 5 and the second installation rib 6, and then insert the main shaft into the installation groove 11, and then push the two A-axis connecting shafts 7 close to each other to clamp the main shaft, and finally bolt the two bearings on the first installation rib 5 and the second installation rib 6 respectively to complete the connection between the A-axis connecting shaft 7 and the main shaft. Since the adjusting sleeve 3 and the first installation port 12 remain coaxial, the coaxiality of the two A-axis connecting shafts 7 assembled on the five-axis head housing 1 can be improved, thereby improving the machining accuracy of the five-axis head.

[0051] Then, the drive source of the A-axis connecting shaft 7 is installed. The motor is placed in the assembly groove 14 and connected with the fixing plate 15 by bolts. The motors are installed in the two assembly grooves 14. A driving gear is sleeved on the motor, an idler gear is installed on the gear mounting hole 16, and a driven gear is installed on the A-axis connecting shaft 7. The idler gear meshes with the driving gear and the driven gear, and the installation of the drive source of the A-axis connecting shaft 7 is completed.

[0052] The motor is installed in the assembly groove 14. Compared with the traditional five-axis head mounting shell, the motor is installed on the side covers on both sides of the five-axis head mounting shell, which can reduce the design size of the shell 1, and the idler gear is installed in the shell 1 through the gear mounting hole 16, so that the size of the driving gear and the driven gear 72 can be appropriately reduced, and the space occupied by the gear on the shell 1 can be reduced, thereby making the two sides of the shell 1 closer, so that the coaxiality of the first mounting port 12 and the second mounting port 13 can be further guaranteed during processing.

[0053] Finally, bolt the A-axis reading head bracket 18 to the pad 17, bolt the A-axis encoder reading head 19 to the A-axis reading head bracket 18, close the side covers on both sides of the housing 1, and complete the assembly.

[0054] The implementation principle of the embodiment of the present application is: by adjusting the relative position of the adjusting sleeve 3 and the second mounting port 13, the adjusting sleeve 3 is made coaxial with the first mounting port 12, and the two A-axis connecting shafts 7 are respectively installed in the first mounting port 12 and the adjusting sleeve 3, the coaxiality of the two A-axis connecting shafts 7 assembled on the five-axis head housing 1 can be improved, thereby improving the machining accuracy of the five-axis head.

[0055] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An assembly mechanism for a five-axis head, characterized in that: The invention comprises a shell (1), wherein the shell (1) is provided with a mounting groove (11) for inserting a main shaft, wherein one side of the shell (1) is provided with a first mounting opening (12), and the other side of the shell (1) is provided with a second mounting opening (13), wherein an adjusting rib (2) is arranged in the second mounting opening (13), wherein a first threaded hole (21) is arranged on the adjusting rib (2), wherein an adjusting sleeve (3) is sleeved in the second mounting opening (13), wherein a positioning hole (31) is arranged on the adjusting sleeve (3), and wherein the positioning hole (31) corresponds to and is in communication with the first threaded hole (21) in a one-to-one manner; The adjusting sleeve (3) is provided with a second threaded hole (32), the second threaded hole (32) is arranged opposite to the adjusting rib (2), and an injection molding space (4) is reserved between the adjusting sleeve (3) and the second mounting opening (13).

2. The assembly mechanism of the five-axis head according to claim 1, characterized in that: The adjusting rib (2) is provided with a first threaded hole (21) at intervals of 20° around the center of the circle, the adjusting sleeve (3) is provided with a positioning hole (31) at intervals of 20° around the center of the circle, and the adjusting sleeve (3) is provided with a second threaded hole (32) at intervals of 60° around the center of the circle.

3. The assembly mechanism of the five-axis head according to claim 1, characterized in that: A first mounting rib (5) is arranged in the first mounting opening (12), a second mounting rib (6) is arranged on the inner wall of the adjusting sleeve (3), an A-axis connecting shaft (7) is passed through the first mounting opening (12) and the adjusting sleeve (3), a limiting ring groove (71) is provided on the A-axis connecting shaft (7), and the first mounting rib (5) and the second mounting rib (6) can both be inserted into the corresponding limiting ring groove (71); After the A-axis connecting shaft (7) and the main shaft are installed, both the first installation rib (5) and the second installation rib (6) have movement space (8) with the corresponding limiting ring groove (71).

4. The assembly mechanism of the five-axis head according to claim 3 is characterized in that: The first mounting rib (5) is provided with a first mounting hole (51) for fixing the bearing, and the second mounting rib (6) is provided with a second mounting hole (61) for fixing the bearing.

5. The assembly mechanism of the five-axis head according to claim 1 is characterized in that: An assembly groove (14) is provided in the housing (1), a fixing plate (15) is connected to the housing (1), and the motor can be placed in the assembly groove (14) and connected to the fixing plate (15).

6. The assembly mechanism of the five-axis head according to claim 5, characterized in that: The housing (1) is provided with a gear mounting hole (16) for mounting a gear connecting shaft.

7. The five-axis head assembly mechanism according to any one of claims 5 or 6, characterized in that: The assembly grooves (14) are provided with two.

8. The assembly mechanism of the five-axis head according to claim 1, characterized in that: A cushion block (17) is arranged in the housing (1), the cushion block (17) is connected to an A-axis reading head bracket (18), and an A-axis encoder reading head (19) for measuring the rotation angle of the A-axis connecting shaft (7) is arranged on the A-axis reading head bracket (18).

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