Axial positioning and supporting structure for axis of main shaft

Abstract

The utility model discloses a main shaft axis axial positioning and supporting structure which comprises an axial positioning assembly and a supporting seat which are sequentially arranged from front to back, and the top of the supporting seat is provided with a supporting opening for placing the front end of an axis. The axial positioning assembly comprises a guide piece arranged on the front side of the bottom of the supporting base, a first moving block and a second moving block, the first moving block and the second moving block move along the guide piece, the first moving block and the second moving block are arranged at the two ends of the guide piece respectively, and the first moving block and the second moving block are jointly connected with a double-thread screw driven by a handle to rotate in a penetrating mode. The middle of the double-thread screw corresponds to the supporting opening and is rotationally connected to a support, and the first moving block and the second moving block are close to each other or away from each other towards the middle of the double-thread screw when the handle drives the double-thread screw to rotate. The axial positioning and supporting structure can achieve supporting and axial positioning of the front end of the axis.

Description

TECHNICAL FIELD

[0001] The utility model relates to spindle axis detection technical field, concretely is a kind of spindle axis axial positioning support structure. BACKGROUND

[0002] Spindle is important component of machining center, and the precision of spindle determines the quality of machining, and the most important thing in spindle is spindle axis, determines the rotary precision of clamping tool. Visible axial precision directly reflects the precision of spindle, so the precision of axial needs to be detected before assembly.

[0003] The method commonly used at present is detected by deflection instrument, but it needs manual positioning, time-consuming and laborious, and low efficiency.

[0004] Therefore, the present application inventors develop a kind of detection device that can support and position axial, and the detection device is also conceived to be provided with hydraulic cylinder, and the hydraulic cylinder acts on the broach system of axial to simulate the control of hydraulic system in spindle system to broach system, to simulate detection under normal working condition.

[0005] It should be noted that, in the conception and design process of detection device, the support and positioning of axial are the design emphasis of the detection device, and on this basis, combined with the shape characteristics of the long shaft member of axial itself, and the front end is provided with baffle disc, therefore, how to design the structure that can support the front end and realize axial positioning by baffle disc is the technical problem to be solved by the present application. CONTENT OF UTILITY MODEL

[0006] The utility model aims at providing a kind of spindle axis axial positioning support structure to effectively solve the problems of supporting and axial positioning to the front end of axial.

[0007] To achieve the above object, the utility model provides the following technical scheme:

[0008] A kind of spindle axis axial positioning support structure, including the axial positioning assembly and support seat that are sequentially arranged, the top of the support seat is equipped with the support mouth for the front end of axial to place, the axial positioning assembly includes the guide piece on the bottom of support seat front side, the first mobile block and the second mobile block along the guide piece movement, the first mobile block and the second mobile block are respectively equipped at the two ends of guide piece, the first mobile block and the second mobile block are connected by the double-end screw of the handle driven rotation in common and pass through, the middle part of the double-end screw is set to correspond to support mouth and the middle part is rotationally connected on a bracket, the first mobile block and the second mobile block are driven by handle when the double-end screw rotates and mutually close to or away from the middle part of double-end screw.

[0009] Preferably, the support port is configured as a V-shaped support port, which is provided with a pad on the two side walls, and the cross section of the pad is configured as an outward convex arc shape.

[0010] Preferably, the pad is configured as a cylindrical structure.

[0011] Preferably, the V-shaped support port is arranged at the middle of the top of the support base and forms a flat bottom wall at the bottom.

[0012] Preferably, the support base is configured as a plate structure, and mounting blocks are arranged at the bottom of both ends of the plate structure.

[0013] Preferably, the guide piece is provided with a guide block, which cooperates with the front side wall of the support base to form a guide groove for the movement of the first moving block and the second moving block.

[0014] Preferably, the support is located at the middle of the guide groove and extends upward to the height position where the bottom of the support port is located.

[0015] Preferably, the double-headed screw is screwed with a left-handed nut and a right-handed nut at the end of the first moving block and the second moving block, respectively, and the left-handed nut and the right-handed nut are arranged at the end of the first moving block and the second moving block, respectively.

[0016] Preferably, the double-headed screw is screwed with the handle at the end of the left-handed nut or the right-handed nut.

[0017] Preferably, the first moving block and the second moving block are both provided with an oblong hole, and the support base is provided with a connecting hole corresponding to the oblong hole, and a limiting rod is arranged in the oblong hole and the corresponding connecting hole.

[0018] Compared with the prior art, the utility model has the beneficial effects that:

[0019] In the utility model, through the arrangement of the support base and the axial positioning assembly, the front end of the shaft center can be supported and axially positioned at the same time. When axially positioned, the double-headed screw can be rotated by rotating the handle, so that the first moving block and the second moving block move towards each other or move away from each other. After moving towards each other to the position, the axial limiting of the baffle plate at the front end of the shaft center is formed, so as to realize the axial positioning and support of the shaft center. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a schematic view of the main shaft center support positioning on the main shaft center axial positioning support structure of the utility model;

[0021] Figure 2 It is a top view schematic view of the main shaft center axial positioning support structure of the utility model;

[0022] Figure 3 It is the side view schematic diagram of the axial positioning support structure of the main shaft (the table surface of the detection device is shown) of the utility model.

[0023] Figure 4 It is the three-dimensional schematic diagram of the axial positioning support structure of the main shaft (the table surface of the detection device is shown) of the utility model.

[0024] In the figure: support seat 1, support port 2, flat bottom wall 3, guide 4, first moving block 5, second moving block 6, handle 7, double-head screw 8, support 9, pad 10, mounting block 11, guide block 12, guide groove 13, left-hand thread nut 14, right-hand thread nut 15, oblong hole 16, connecting hole 17, limiting rod 18, bearing 19;

[0025] Shaft center 100, baffle disc 101. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0027] The axial positioning support structure of the main shaft provided by the utility model mainly supports the front end of the shaft center through the support seat with the support port, and the two moving blocks capable of moving towards each other or moving away from each other are arranged to form the axial limiting of the baffle disc at the front end of the shaft center, so as to solve the problems of the support and axial positioning of the front end of the shaft center.

[0028] The axial positioning support structure of the main shaft of the utility model will be described in detail below with specific embodiments.

[0029] EMBODIMENT

[0030] Please refer to Figures 1-4In the embodiment, a spindle axial positioning support structure is provided, which comprises an axial positioning assembly and a support seat 1 arranged in sequence. The top of the support seat 1 is provided with a support opening 2 for placing the front end of the shaft 100. The axial positioning assembly comprises a guide 4 arranged at the front side of the bottom of the support seat 1, a first moving block 5 and a second moving block 6 moving along the guide 4, the first moving block 5 and the second moving block 6 are arranged at the two ends of the guide 4 respectively, a double-head screw 8 driven and rotated by a handle 7 is connected through the first moving block 5 and the second moving block 6, the middle part of the double-head screw 8 is arranged corresponding to the support opening 2 and is rotatably connected to a support 9, the first moving block 5 and the second moving block 6 move towards or away from each other at the middle part of the double-head screw 8 when the handle 7 drives the double-head screw 8 to rotate. In the support positioning, the front end of the shaft 100 can be placed in the support opening 2 and supported on the support seat 1, so that the support of the front end of the shaft 100 is completed. When the front end of the shaft 100 needs to be positioned, the first moving block 5 and the second moving block 6 are arranged by using the existing structure of the front end baffle 101 of the shaft 100, so that the first moving block 5 and the second moving block 6 can approach the front end of the shaft 100 when the handle 7 drives the double-head screw 8 to rotate. At this time, slightly move the shaft 100 backward to make the baffle 101 be positioned on the first moving block 5 and the second moving block 6, so as to prevent the shaft 100 from continuing to move backward, thereby completing the axial positioning of the shaft 100.

[0031] In the embodiment, in order to optimize the structure of the support opening 2, specifically, the support opening 2 is configured as a V-shaped support opening, and the V-shaped support opening is arranged at the middle of the top of the support seat 1 and forms a flat bottom wall 3 at the bottom. The width of the V-shaped support opening gradually decreases from the top to the bottom, so that the shafts with various outer diameters can be supported. At the same time, the flat bottom wall 3 is arranged to avoid forming a sharp V-shaped sharp bottom. On the one hand, the flat bottom wall 3 is easier to be formed than the V-shaped sharp bottom when the V-shaped support opening is machined, and on the other hand, the flat bottom wall 3 is more superior in strength than the sharp V-shaped sharp bottom.

[0032] For the V-shaped support opening, due to its flat inner wall, if no pads are provided on the flat inner wall when supporting the front end of the shaft 100, the front end of the shaft 100 will directly contact the flat inner wall. Since the support base 1 itself is made of metal, if the front end of the shaft 100 is directly pressed against the hard metal material, it will cause pressure damage to the outer wall of the front end of the shaft 100. Therefore, in this embodiment, the following optimization is made: specifically, pads 10 are provided on the two inner walls of the V-shaped support opening, and the bearing surface of the pads 10 is constructed into an outwardly convex arc shape. Nylon is preferred as the material for the pads 10, as it provides sufficient bearing strength to support the front end of the shaft 100. Furthermore, the shape of the pads 10 is optimized, preferably a simple cylindrical structure, i.e., a nylon rod is preferred to form the pads 10. Of course, in other embodiments, a semi-cylindrical rod structure can also be used. Regarding the aforementioned pad 10, when supporting the front end of the shaft 100, since the front end of the shaft 100 has an outwardly convex arc surface, and the pad 10 also has an outwardly convex arc-shaped bearing surface, the two outwardly convex arc surfaces come into contact and form a line contact. Furthermore, when the shaft 100 moves axially backward, the front end of the shaft 100 only moves on the outwardly convex arc surface of the pad 10. Compared to sliding on a flat surface, the overall wear is significantly reduced.

[0033] In this embodiment, the support base 1 is constructed as a plate-like structure, with mounting blocks 11 at the bottom of both ends of the plate-like structure. During installation, the support base 1 can be installed and connected to the platform of the testing device using the mounting blocks 11. Furthermore, the guide member 4 includes a guide block 12, which, together with the front sidewall of the support base 1, forms a guide groove 13 for the movement of the first moving block 5 and the second moving block 6. The bracket 9 is located in the middle of the guide groove 13 and extends upwards to the height of the bottom of the support opening 2. Therefore, in this embodiment, the guide groove 13 is formed by the plate-like support base 1 and the guide block 12, achieving a minimal number of components and a simple overall structure. More importantly, the sidewall of the guide groove 13 is directly the front sidewall of the support base 1, without any intermediate components. Thus, when moving the first moving block 5 and the second moving block 6, they can move along the front sidewall of the support base 1, providing a certain degree of guided movement. Of course, in other embodiments, the guide member 4 can also be constructed as a long strip block structure, and the guide groove 13 is opened on the top of the long strip block structure. In this way, the guide member 4 directly constructs the guide groove 13, which is relatively simple in structure, but the guide groove 13 needs to be machined.

[0034] In this embodiment, a left-handed nut 14 and a right-handed nut 15 are screwed onto the ends of the double-ended screw 8 that extend from the first moving block 5 and the second moving block 6, respectively. The left-handed nut 14 and the right-handed nut 15 are respectively installed at the ends of the first moving block 5 and the second moving block 6, and the handle 7 is screwed onto the end of the double-ended screw 8 that extends from the left-handed nut 14 or the right-handed nut 15. The double-ended screw 8 in this embodiment has two sections of threads with opposite helical directions. The middle part of the double-ended screw 8 is rotatably connected to the bracket 9 through the bearing 19. The bracket 9 can support the double-ended screw 8 and prevent the double-ended screw 8 from moving axially. When the handle 7 is rotated, the handle 7 drives the double-ended screw 8 to rotate. The rotation of the double-ended screw 8 causes the left-hand nut 14 and the right-hand nut 15 to move towards or away from each other. The left-hand nut 14 and the right-hand nut 15 are respectively installed on the first moving block 5 and the second moving block 6. In this way, the left-hand nut 14 and the right-hand nut 15 will cause the first moving block 5 and the second moving block 6 to move along the guide groove 13 towards the front end of the shaft core 100, thereby finally achieving axial limiting of the baffle 101.

[0035] It should be noted that in other embodiments, the first moving block 5 and the second moving block 6 can be directly screwed to the bidirectional screw 8, in which case there is no left-hand nut 14 and right-hand nut 15. Although this design eliminates the need for left-hand nuts 14 and right-hand nuts 15, it requires long threaded holes in the first moving block 5 and the second moving block 6. On the one hand, long threaded holes are difficult to machine, and on the other hand, it adds a machining step to the threaded hole. In this embodiment, left-hand nuts 14 and right-hand nuts 15 are used to screw to the bidirectional screw 8, which achieves the purpose of axial positioning. At the same time, left-hand nuts 14 and right-hand nuts 15 can be purchased as a set with the bidirectional screw 8, eliminating the need for the aforementioned machining of long threaded holes and simplifying the component processing steps.

[0036] In this embodiment, one sidewall of the guide groove 13 is directly the front sidewall of the support base 1. Therefore, based on this, both the first moving block 5 and the second moving block 6 are provided with elongated holes 16, and the support base 1 is provided with connecting holes 17 at the corresponding elongated holes 16. Limiting rods 18 are installed in the elongated holes 16 and the corresponding connecting holes 17. In this embodiment, the limiting rods 18 are preferably readily available bolts. Thus, when moving the first moving block 5 and the second moving block 6, the distance that the first moving block 5 and the second moving block 6 can move is limited by the elongated holes 16. That is, the distance moved is the length of the elongated holes 16, which avoids excessive movement and allows for precise movement of the desired distance.

[0037] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An axial positioning support structure for a spindle shaft, characterized in that, The device includes an axial positioning assembly and a support base arranged sequentially. The top of the support base has a support opening for placing the front end of the shaft. The axial positioning assembly includes a guide member located at the bottom front side of the support base, a first moving block and a second moving block that move along the guide member. The first moving block and the second moving block are respectively located at both ends of the guide member. A double-ended screw driven to rotate by a handle is connected through the first moving block and the second moving block. The middle part of the double-ended screw is located at the support opening and is rotatably connected to a bracket. When the handle drives the double-ended screw to rotate, the first moving block and the second moving block move closer to or further away from each other towards the middle part of the double-ended screw.

2. The spindle shaft axial positioning support structure according to claim 1, characterized in that: The support opening is constructed as a V-shaped support opening, and pads are provided on both side walls of the V-shaped support opening. The cross-section of the pads is constructed as an outwardly convex arc shape.

3. The spindle shaft axial positioning support structure according to claim 2, characterized in that: The V-shaped support opening is located at the top center of the support base and forms a flat bottom wall at the bottom.

4. The spindle shaft axial positioning support structure according to claim 1 or 3, characterized in that: The guide member includes a guide block, which together with the front sidewall of the support base forms a guide groove for the first moving block and the second moving block to move.

5. The spindle shaft axial positioning support structure according to claim 4, characterized in that: The bracket is located in the middle of the guide groove and extends upward to the height of the bottom of the support opening.

6. The spindle shaft axial positioning support structure according to claim 1, characterized in that: The double-ended screw has a left-hand nut and a right-hand nut screwed to the ends of the first and second moving blocks, respectively. The left-hand nut and the right-hand nut are respectively installed at the ends of the first and second moving blocks.

7. The spindle shaft axial positioning support structure according to claim 6, characterized in that: The handle is screwed to the end of the double-ended screw that extends beyond the left-hand or right-hand nut.

8. The spindle shaft axial positioning support structure according to claim 1, characterized in that: Both the first and second movable blocks are provided with elongated holes, and the support base is provided with connecting holes at the corresponding elongated holes. Limiting rods are installed in the elongated holes and the corresponding connecting holes.

Images