Integrated double-spindle assembly structure and key machine

Abstract

The utility model provides an integrated double-main-shaft assembling structure and a key machine, and relates to the field of key machining equipment, and the integrated double-main-shaft assembling structure comprises a rack base and two groups of main shaft motors. Two mounting holes are formed in a bottom plate of the rack base side by side. Shaft bodies of the two groups of spindle motors are stepped shafts and comprise first shaft sections, second shaft sections and third shaft sections of which the diameters are sequentially reduced. The first shaft section is downwards arranged below the mounting hole, and a tool mounting hole is formed in the end of the first shaft section in the axis direction. And the second shaft section is mounted in the mounting hole through the first bearing. The third shaft section is arranged above the mounting hole, and a stator part of the main shaft motor sleeves the outer side of the third shaft section and is fixedly connected with the bottom plate; the end part of the third shaft section is fixedly connected with the rotor part; and the rotor part sleeves the outer side of the stator part. According to the key machine, the two cutters can be integrally installed on the key machine, the cutter changing frequency can be reduced in the complex key machining process, and the overall rigidity can be improved.

Description

Technical Field

[0001] The utility model relates to the field of key processing equipment, in particular to an integrated double-spindle assembly structure and a key machine. Background Art

[0002] In order to meet consumers' increasing requirements for lock security, the structure of keys is now being designed to be more and more complex. Some complex keys often require multiple tools to process. However, existing key machines generally have only one output shaft. When processing complex keys, it may be necessary to change tools multiple times, resulting in cumbersome processing steps, low processing efficiency, and difficulty in ensuring processing accuracy, increasing the risk of tool breakage and directly reducing the service life of the tool. Utility Model Content

[0003] The utility model aims to provide an integrated dual-spindle assembly structure and a key machine, aiming to solve the problem of the prior art that multiple tool changes are required when processing complex keys.

[0004] To this end, the utility model adopts the following technical solutions:

[0005] An integrated dual-spindle assembly structure comprises a frame base and two sets of spindle motors.

[0006] The rack base comprises a back plate arranged vertically and a bottom plate arranged horizontally on the back plate, and two mounting holes are arranged side by side on the bottom plate.

[0007] The two sets of spindle motors both include a shaft body, a stator part and a rotor part; the shaft body is a stepped shaft, including a first shaft section, a second shaft section and a third shaft section with successively decreasing diameters.

[0008] The first shaft section is arranged downwardly below the mounting hole, and a tool mounting hole is formed at the end of the first shaft section along the axial direction.

[0009] The second shaft section is installed in the mounting hole through the first bearing.

[0010] The third shaft section is arranged above the mounting hole, the stator part is sleeved outside the third shaft section and fixedly mounted on the bottom plate; the end of the third shaft section is fixedly connected to the rotor part, and the rotor part is sleeved outside the stator part.

[0011] The utility model also provides a key machine, comprising the above-mentioned integrated double-spindle assembly structure.

[0012] The utility model has the following beneficial effects:

[0013] (1) In the utility model, two sets of spindle motors are arranged on the frame base, and two tools can be installed at the same time. In the process of processing complex keys, tool changes can be reduced, thereby reducing processing steps, improving processing efficiency, and improving processing accuracy, reducing the risk of tool breakage, and increasing the service life of the tool.

[0014] (2) The shafts of the two sets of spindle motors are directly connected to the frame base through bearings, so that the two sets of spindle motors and the frame base form an integrated structure, which improves the overall stiffness of the two sets of spindle motors and can further improve the processing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic structural diagram of an integrated dual-spindle assembly structure provided by an embodiment of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the frame base in the embodiment of the utility model;

[0017] Figure 3 A cross-sectional view of an integrated dual-spindle assembly structure provided by an embodiment of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the rotor part in the embodiment of the utility model;

[0019] Figure 5 It is a cross-sectional view of the frame base in the embodiment of the utility model;

[0020] Figure 6 It is a cross-sectional view of the spindle motor in the embodiment of the utility model;

[0021] Figure 7 It is a schematic diagram of the installation of the seat cover in the embodiment of the utility model.

[0022] Among them, 1: frame base; 2: spindle motor; 3: tool mounting hole; 4: first bearing; 5: bearing pressure plate; 6: locking nut; 7: second bearing; 8: probe; 9: intermediate shaft; 10: tool; 11: back plate; 12: bottom plate; 13: mounting hole; 14: sink groove; 15: mounting track; 16: seat cover; 17: triangular side plate; 131: first step hole; 132: second step hole; 21: shaft; 22: stator part; 23: rotor part; 211: first shaft section; 212: second shaft section; 213: third shaft section; 221: stator mounting seat; 222: stator winding; 231: back cover; 232: rotor mounting cylinder; 233: permanent magnet; 31: top screw hole; 32: vent hole. DETAILED DESCRIPTION

[0023] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. The connection can be a direct connection or an indirect connection.

[0026] In addition, in the present utility model, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0027] like Figure 1 FIG. 1 is a schematic diagram of an integrated dual-spindle assembly structure provided by an embodiment of the present invention. The integrated dual-spindle assembly structure provided by the present embodiment comprises: a frame base 1 and two sets of spindle motors 2 .

[0028] Among them, the two sets of spindle motors 2 can be equipped with two different milling cutters at the same time. For complex keys that require two kinds of cutting tools to process, the two milling cutters installed in this embodiment can be directly switched freely by program control, without changing the cutter during the processing. And in this embodiment, the frame base 1 can be the main structure of the key machine, which is used to fix the two sets of spindle motors 2, and play a supporting and fixing role for the whole integrated dual-spindle assembly structure and the connection between the equipment. Therefore, the integrated dual-spindle assembly structure provided in this embodiment can be directly connected to the key machine, reducing the connection components between the spindle motor 2 and the equipment, and can improve the installation accuracy of the equipment, thereby improving the processing accuracy of the key machine.

[0029] like Figure 2The frame base 1 includes a vertically arranged back plate 11 and a bottom plate 12 arranged horizontally on the back plate 11, and two mounting holes 13 are arranged side by side on the bottom plate 12.

[0030] Among them, the two mounting holes 13 on the frame base 1 are used to fix and install two sets of spindle motors 2. The frame base 1 plays the role of supporting and fixing the spindle motors 2 and connecting with the key machine equipment. The back plate 11 is provided with a mounting track 15 on the other side of the mounting base plate 12. The mounting track 15 can be directly connected to the driving component of the key machine and is used to control the axial movement of the dual spindle motors 2 during processing. A wire outlet hole can be provided in the middle of the mounting track 15 for placing and fixing the motor wiring harness. The base plate 12 can be set to be thicker, preferably capable of installing two bearings. The aperture of the mounting hole 13 can be designed according to the outer diameter of the bearing so that the bearing and the mounting hole 13 are interference fit to improve the overall rigidity. A triangular side plate 17 for support can be provided between the back plate 11 and the base plate 12 to reinforce the frame base 1 and improve the overall rigidity. The shaft 21 of the spindle motor 2 is directly installed in the mounting hole 13 through the bearing, which reduces the intermediate mounting components and realizes the integration of the dual-spindle assembly structure. Therefore, the installation accuracy of the two sets of spindle motors 2 can be directly controlled by the processing accuracy of the two mounting holes 13.

[0031] like Figure 3 The figure is a cross-sectional view of the integrated dual-spindle assembly structure provided in this embodiment, and the cross-section passes through the axis of a spindle motor. Both sets of spindle motors 2 include a shaft body 21, a stator part 22 and a rotor part 23; the shaft body 21 is a stepped shaft, including a first shaft section 211, a second shaft section 212 and a third shaft section 213 with successively decreasing diameters.

[0032] Among them, the motor in this embodiment is preferably an outer rotor type spindle motor 2, the stator part 22 may include components such as a stator mounting seat 221 and a stator winding 222, the rotor part 23 includes components such as a rotor mounting cylinder 232, a permanent magnet 233 and a back cover 231, and the stator part 22 and the rotor part 23 can realize the function of the spindle motor 2, so that the rotor part 23 drives the shaft body 21 to rotate. The shaft body 21 is a stepped shaft, which can reduce the volume of the spindle motor 2, making the integrated dual-spindle assembly structure provided in this embodiment more compact.

[0033] The first shaft section 211 is arranged downwardly below the mounting hole 13 , and a tool mounting hole 3 is formed at the end of the first shaft section 211 along the axial direction.

[0034] The shaft body 21 passes through the mounting hole 13, so that the first shaft section 211 is arranged below the mounting hole 13, which can facilitate the key machine to control the tool movement. The tool mounting holes 3 arranged on the shaft bodies 21 of the two sets of spindle motors 2 can have different apertures, and the specific aperture size can be set according to the diameter of the tool to be installed.

[0035] The second shaft section 212 is installed in the installation hole 13 through the first bearing 4 .

[0036] The two second shaft sections 212 of the two shaft bodies 21 are respectively installed in the two mounting holes 13 through the two first bearings 4. The diameter of the second shaft section 212 can be set according to the first bearing 4, so that the second shaft section 212 and the inner ring of the first bearing 4 are interference fit to improve the connection stiffness. The first bearing 4 can be one or more, preferably two, and the thickness of the mounting hole 13 can be designed according to the width and number of the installed first bearings 4. The first bearing 4 is preferably a deep groove ball bearing or an angular contact bearing.

[0037] The third shaft segment 213 is arranged above the mounting hole 13, the stator part 22 is sleeved on the outside of the third shaft segment 213, and is fixedly mounted on the base plate 12; the end of the third shaft segment 213 is fixedly connected to the rotor part 23, and the rotor part 23 is sleeved on the outside of the stator part 22.

[0038] The third shaft section 213 is used to install the stator part 22 and the rotor part 23. The stator part 22 can be connected to the third shaft section 213 through a bearing and fixed on the bottom plate 12 by bolts. The stator part 22 and the frame base 1 remain relatively stationary. Figure 4 , which is a schematic diagram of the structure of the rotor part in this embodiment, the rotor part 23 may include a rear cover 231, a rotor mounting cylinder 232 and a permanent magnet 233, the permanent magnet 233 is mounted on the inner wall of the rotor mounting cylinder 232, and the rotor mounting cylinder 232 is connected to the rear cover 231. The rear cover 231 is fixed to the end of the third shaft segment 213, so that the shaft body 21 can rotate together with the rotor part 23, and the rotor mounting cylinder 232 is sleeved on the outside of the stator part 22 and can form a complete outer rotor motor structure together with the stator part 22 and the shaft body 21.

[0039] In this embodiment, two sets of spindle motors 2 are arranged on the frame base 1, and two tools can be installed at the same time. In the process of processing complex keys, tool changes can be reduced, thereby reducing processing steps, improving processing efficiency, and improving processing accuracy, reducing the risk of tool breakage, and increasing the service life of the tool. The shafts 21 of the two sets of spindle motors 2 are directly connected to the frame base 1 through bearings, so that the two sets of spindle motors 2 and the frame base 1 form an integrated structure, which improves the overall rigidity of the two sets of spindle motors 2 and can further improve the processing accuracy.

[0040] like Figure 5 , which is a cross-sectional view of the frame base in this embodiment, and the cross-section passes through the axis of the mounting hole 13. In this embodiment, the mounting hole 13 includes a first-step hole 131 and a second-step hole 132 from bottom to top, the aperture of the first-step hole 131 is larger than the aperture of the second-step hole 132, and the outer ring of the first bearing 4 is interference-fitted with the first-step hole 131.

[0041] Among them, the step generated between the first step hole 131 and the second step hole 132 is used to resist the outer ring of the first bearing 4, and the aperture of the second step hole 132 is smaller than the outer diameter of the first bearing 4, and larger than the inner diameter of the first bearing 4. In addition, the first shaft section 211 of the shaft body 21 has the largest diameter, and the shoulder formed between the first shaft section 211 and the second shaft section 212 can abut against the inner ring of the first bearing 4, so that the first bearing 4 can be clamped in the axial direction, thereby improving the rigidity of the shaft body 21 and the frame base 1 as a whole. When processing keys using the integrated dual-spindle assembly structure provided in this embodiment, the tool will transmit an upward force along the axis to the shaft body 21. The structure provided in this embodiment can prevent the shaft body 21 from moving upward along the axis, and has better processing stability.

[0042] In this embodiment, the bottom plate 12 is provided with a recessed groove 14 at the first step hole 131 . The recessed groove 14 is used to install and fix the bearing pressure plate 5 of the first bearing 4 . The bearing pressure plate 5 is provided with a flange for abutting against the outer ring of the first bearing 4 .

[0043] The bearing pressure plate 5 is clamped in the recessed groove 14 and can be fixed to the bottom plate 12 by bolts, and the flange is pressed against the outer ring of the first bearing 4 to fix the first bearing 4, preventing the bearing pressure plate 5 from sliding off the original installation position due to the axial force when the motor rotates, and the bearing pressure plate 5 can reduce the noise generated by the rotation of the bearing. The recessed groove 14 opened at the first step hole 131 of the bottom plate 12 helps to position and install the bearing pressure plate 5, thereby improving the installation efficiency.

[0044] In this embodiment, the second shaft section 212 is provided with threads, and a locking nut 6 is installed at the shaft section provided with threads. The locking nut 6 is used to fix the inner ring of the first bearing 4 .

[0045] The range of the thread on the second shaft section 212 can be determined according to the installation position of the first bearing 4 on the second shaft section 212, and preferably there is a certain interval between the thread and the installation position of the first bearing 4. The locking nut 6 can further fix the first bearing 4, improve the rigidity of the shaft body 21 and the integrated dual-spindle assembly structure as a whole, and thus improve the machining accuracy of the key cutting machine using the integrated dual-spindle assembly structure provided by this embodiment.

[0046] like Figure 6, which is a cross-sectional view of the spindle motor in this embodiment, the cross section passes through the axis of the shaft body. In this embodiment, the stator part 22 includes a stator mounting seat 221 and a stator winding 222. The stator mounting seat 221 has a through hole arranged along the axis, which is used to be sleeved on the outer side of the shaft body 21.

[0047] One end of the stator mounting seat 221 is a mounting end, and the mounting end is fixedly mounted on the base plate 12 .

[0048] The mounting end may be a shaft ring-shaped structure with screw holes arranged along the axial direction, and may be fixed on the base plate 12 by screws.

[0049] The other end of the stator mounting seat 221 is a cylindrical fixed end, the outer circumferential surface of the fixed end is used to mount the stator winding 222 , and a second bearing 7 is installed between the inner circumferential surface of the fixed end and the first shaft segment 211 .

[0050] Among them, after the shaft body 21 is installed on the bottom plate 12 through the first bearing 4, the stator part 22 can be installed from above the bottom plate 12. First, the stator winding 222 is installed on the outer circumferential surface of the fixed end of the stator mounting seat 221, and then it is sleeved on the first shaft section 211 of the shaft body 21, so that the mounting end of the stator mounting seat 221 is connected to the bottom plate 12, and the stator mounting seat 221 is fixed to the bottom plate 12 with bolts. Finally, the second bearing 7 is installed, and the inner circumference of the fixed end of the stator mounting seat 221 is provided with a shoulder for installing the second bearing 7. The stator part 22 is directly fixed on the frame base 1, realizing the integration of the motor and the frame, and improving the rigidity of the integrated dual-spindle assembly structure.

[0051] A top screw hole 31 is provided on the side of the tool mounting hole 3, and the top screw hole 31 is used to fix the tool. A vent hole 32 is connected to the bottom of the tool mounting hole 3 to prevent the gap between the tool and the tool mounting hole 3 from being too small to generate negative pressure.

[0052] In this embodiment, a gap is provided between the stator mounting seat 221 and the first bearing 4 .

[0053] The stator mounting seat 221 preferably has a flange structure that can be inserted into the mounting hole 13, which can facilitate installation and positioning. A gap is provided between the stator mounting seat 221 and the first bearing 4, which can prevent the inner ring or outer ring of the first bearing 4 from contacting the stator mounting seat 221, prevent the first bearing 4 from transmitting interference or loosening, and improve the installation stability of the first bearing 4.

[0054] In this embodiment, the second bearing 7 is a deep groove ball bearing, and a spring washer and a copper washer are installed on the end surface of the inner ring of the second bearing 7.

[0055] Among them, the deep groove ball bearing is inexpensive, and using it as the second bearing 7 can reduce the manufacturing cost of the integrated dual-spindle assembly structure provided by this embodiment. Preferably, the copper washer can be arranged between the end face of the inner ring of the second bearing 7 and the rotor part 23, and the spring washer can be arranged between the second bearing 7 and the mounting end of the stator mounting seat 221. The spring washer and the copper washer can eliminate the gap between the inner ring of the second bearing 7 and the two contact surfaces together, and make the axial force of the second bearing 7 more uniform, further improving the overall rigidity of the integrated dual-spindle assembly structure.

[0056] In this embodiment, the second shaft segment 212 and the third shaft segment 213 are transitioned through a conical surface.

[0057] Among them, the second shaft section 212 and the third shaft section 213 are transitioned through a conical surface. Compared with the stepped shaft in the prior art, this embodiment can not only further improve the rigidity of the shaft body 21, but also improve the stress condition of the shaft body 21.

[0058] like Figure 7 , which is a schematic diagram of the installation of the seat cover in this embodiment. In this embodiment, a seat cover 16 is also included; the seat cover 16 is used to cooperate with the frame base 1 to wrap the two sets of spindle motors 2.

[0059] The seat cover 16 may be composed of four sides and installed on the frame base 1 by bolts to wrap the two sets of spindle motors 2 for protection. A groove for installing the seat cover 16 may be provided on the frame base 1 to facilitate the positioning and installation of the seat cover 16.

[0060] In this embodiment, the base plate 12 is provided with a probe 8 between two mounting holes 13 .

[0061] The probe 8 is used for the profiling and tool setting of the key machine to ensure the position accuracy during the milling of the key machine. The probe 8 is set between the two mounting holes 13, preferably at the center point of the two mounting holes. The probe 8 is at an equal distance from the two shafts 21 and the tools installed on the shafts 21, which can improve the efficiency of switching working tools. The probe 8 can be installed on the bottom plate 12 through the intermediate shaft 9, and a stress disk is set between the bottom plate 12. The stress disk is used to sense the magnitude of the stress received to realize the detection function of the probe 8.

[0062] Another embodiment of the present invention provides a key machine, comprising the integrated dual-spindle assembly structure of any of the above embodiments.

[0063] In this embodiment, the integrated dual-spindle assembly structure is directly connected to the key machine through the mounting track 15 provided on the back plate 11, and the key machine can control the axial movement of the integrated dual-spindle assembly structure during processing. A wire outlet hole can be provided on the back plate 11, and the wire outlet hole is used to place and fix the wire harness of the motor and the probe 8 so that the wire harness can be connected to the key machine.

[0064] The key machine provided in this embodiment is provided with two spindles on the same bracket, which can be equipped with two milling cutters of different sizes, so there is no need to frequently replace the milling cutter, which greatly reduces the milling time of the user and improves the efficiency of milling keys. The two spindles are arranged on the same bracket, and the bracket is directly connected to the key machine, which reduces the use of intermediate connecting parts and improves the overall rigidity of the motor. The key machine provided in this embodiment can quickly realize intelligent switching milling, ensuring the milling accuracy of the key and the service life of the milling cutter. In addition, the structure is reasonable and simple, the practicability is strong, and the work efficiency is high.

[0065] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An integrated dual-spindle assembly structure, characterized in that: include: A frame base (1) and two sets of spindle motors (2); The rack base (1) comprises a back plate (11) arranged vertically, and a bottom plate (12) horizontally connected to the back plate (11), and two mounting holes (13) are arranged side by side on the bottom plate (12); The two groups of spindle motors (2) both comprise a shaft body (21), a stator part (22) and a rotor part (23); the shaft body (21) is a stepped shaft, comprising a first shaft section (211), a second shaft section (212) and a third shaft section (213) whose diameters decrease successively; The first shaft section (211) is arranged downwardly below the mounting hole (13), and a tool mounting hole (3) is formed at the end of the first shaft section (211) along the axial direction; The second shaft section (212) is mounted in the mounting hole (13) via a first bearing (4); The third shaft section (213) is arranged above the mounting hole (13); the stator part (22) is sleeved on the outside of the third shaft section (213) and fixedly mounted on the base plate (12); an end of the third shaft section (213) is fixedly connected to the rotor part (23), and the rotor part (23) is sleeved on the outside of the stator part (22).

2. The integrated dual-spindle assembly structure according to claim 1, characterized in that: The mounting hole (13) comprises, from bottom to top, a first-step hole (131) and a second-step hole (132); the aperture of the first-step hole (131) is larger than the aperture of the second-step hole (132); and the outer ring of the first bearing (4) is interference-fitted with the first-step hole (131).

3. The integrated dual-spindle assembly structure according to claim 2, characterized in that: The bottom plate (12) is provided with a recessed groove (14) at the first stepped hole (131), the recessed groove (14) being used to install a bearing pressure plate (5) for fixing the first bearing (4), the bearing pressure plate (5) being provided with a flange for abutting against an outer ring of the first bearing (4).

4. The integrated dual-spindle assembly structure according to claim 3 is characterized in that: The second shaft section (212) is provided with a thread, and a locking nut (6) is installed at the shaft section provided with the thread, and the locking nut (6) is used to fix the inner ring of the first bearing (4).

5. The integrated dual-spindle assembly structure according to claim 1, characterized in that: The stator part (22) comprises a stator mounting seat (221) and a stator winding (222); the stator mounting seat (221) has a through hole arranged along the axis and is used for being sleeved on the outside of the shaft body (21); One end of the stator mounting seat (221) is a mounting end, and the mounting end is fixedly mounted on the base plate (12); The other end of the stator mounting seat (221) is a cylindrical fixed end, the outer circumferential surface of the fixed end is used to mount the stator winding (222), and a second bearing (7) is mounted between the inner circumferential surface of the fixed end and the first shaft section (211).

6. The integrated dual-spindle assembly structure according to claim 5, characterized in that: A gap is provided between the stator mounting seat (221) and the first bearing (4).

7. The integrated dual-spindle assembly structure according to claim 5, characterized in that: The second bearing (7) is a deep groove ball bearing, and a spring washer and a copper washer are installed on the end surface of the inner ring of the second bearing (7).

8. The integrated dual-spindle assembly structure according to claim 1, characterized in that: The second shaft section (212) and the third shaft section (213) are transitioned via a conical surface.

9. The integrated dual-spindle assembly structure according to claim 1, characterized in that: The bottom plate (12) is provided with a probe (8) between the two mounting holes (13); the probe (8) is mounted on the bottom plate (12) via an intermediate shaft (9), and a stress disk is provided between the probe and the bottom plate (12).

10. A key machine, characterized in that: It comprises the integrated dual-spindle assembly structure as described in any one of claims 1-9.

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