Spindle box positioning anti-displacement structure

Abstract

The utility model discloses a spindle box positioning anti-displacement structure, which relates to the technical field of machine tool installation, and comprises a machine tool base and a spindle box, a machine tool headstock is fixedly installed on the machine tool base, a headstock seat is fixedly installed on the machine tool headstock, four bolt through holes are uniformly distributed on the headstock seat, and the spindle box is fixedly installed on the machine tool headstock. Bolt through holes are formed in the headstock, one of the bolt through holes is an anti-collision through hole, and a fixing pin is further arranged in the anti-collision through hole in the headstock. And meanwhile, the risk that the main screw is broken due to the impact of the spindle box can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of machine tool installation, and particularly relates to a positioning and anti-displacement structure for a spindle box. Background Art

[0002] The spindle box plays an important role in a machine tool. Its main function is to support and rotate the spindle to achieve functions such as starting, braking, speed change, and reversing of the machine tool. Due to its core position during the operation of the machine tool, the stability of the spindle box has a direct impact on the performance and accuracy of the entire machine tool.

[0003] The Chinese utility model patent with the application number: 202221624701.9 discloses a positioning pin. The positioning pin designed by this device can position the assembly hole and can be simply and conveniently disassembled from the assembly hole after the positioning of the assembly hole is completed.

[0004] In the prior art, the fixation between the spindle box and the bed is achieved by the pressure generated by bolts. By increasing the pressure on the contact surface between the spindle box and the bed, the frictional force on the contact surface between the spindle box and the bed is increased, so as to fix the spindle box. When the spindle box is impacted and the impact force is greater than the frictional force on the contact surface between the spindle box and the bed, the spindle box will squeeze the bolts, and the shear force generated by the cooperation between the spindle box and the bed often causes the bolts to break or deform, resulting in the spindle box falling off or displacing, thereby reducing the accuracy of the machine tool. Content of the Utility Model

[0005] In view of the above technical problems, the present utility model proposes the following technical solutions:

[0006] A positioning and anti-displacement structure for a spindle box, including a machine tool base and a spindle box. A machine tool headstock is fixedly installed on the machine tool base, and a headstock seat is fixedly installed on the machine tool headstock. The headstock seat is in an I-shaped shape, and four bolt through-holes are evenly distributed on the headstock seat. One of the bolt through-holes in the bolt through-holes is an anti-collision through-hole, and the anti-collision through-hole is twice as large as the other bolt through-holes. Fixed light holes corresponding to the bolt through-holes on the headstock seat are provided on the spindle box, and the diameter of the fixed light holes is the same as the diameter of the bolt through-holes. An anti-collision light hole corresponding to the anti-collision through-hole on the headstock seat is also provided on the spindle box, and the diameter of the anti-collision light hole is the same as the diameter of the anti-collision through-hole.

[0007] Furthermore, a main screw is also provided in the bolt through-hole of the headstock seat. Threads are provided at both ends of the main screw, and a smooth rod is between the threads at both ends of the main screw. Positioning washers are also provided at both ends of the main screw, and the positioning washers provided at both ends of the main screw are in contact with the headstock seat and the spindle box respectively.

[0008] Further, a plurality of locking nuts are also threadedly connected to the threads at both ends of the main screw. The locking nuts are used to connect the headstock and the bedstock. The locking nuts are in contact with the positioning gaskets. A fixing pin is also arranged in the anti-collision through hole on the bedstock, and the fixing pin is arranged on the outer wall of the main screw.

[0009] Further, the outer wall of the fixing pin is in close contact with the inner wall of the anti-collision hole of the bedstock, and the outer wall of the main screw is not in contact with the inner wall of the fixing pin. A limiting spring is fixedly installed at one end of the fixing pin close to the headstock, and the other end of the limiting spring is in contact with the positioning gasket. The limiting spring is used to limit the position of the fixing pin.

[0010] Further, the side of the bedstock away from the headstock of the machine tool is in contact with the headstock. A horizontal clamping block is arranged on one side of the bedstock, and the horizontal clamping block can fit with the headstock. A vertical clamping block is arranged on the other side of the bedstock, and the vertical clamping block can fit with the headstock. The horizontal clamping block and the vertical clamping block can limit the position of the headstock. The horizontal clamping block and the vertical clamping block are fixed on the outer wall of the bedstock by screws.

[0011] Further, a scale plate is also arranged on the side of the bedstock where the vertical clamping block is arranged. A scale pointer is fixedly installed on one side of the headstock close to the scale plate, and the scale pointer is fixed to the outer wall of the headstock by screws.

[0012] The beneficial effects of the present utility model compared with the prior art are as follows: (1) In this structure, by allowing the fixing pin to bear the shear force between the headstock and the bedstock, not only the displacement of the headstock after being impacted is reduced, but also the risk of the main screw being broken due to the impact of the headstock is reduced; (2) In this structure, by arranging a limiting spring on the fixing pin, the fixing pin can be convenient for processing and installation, and at the same time, the position of the fixing pin can be guaranteed, so that the manufacturing cost and installation cost of this structure are reduced. Description of the Drawings

[0013] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0014] Figure 2 It is a schematic diagram of the structure of the bedstock of the present utility model.

[0015] Figure 3 It is a schematic diagram of the structure of the fixing pin of the present utility model.

[0016] Figure 4 It is a schematic diagram of the sectional structure of the bedstock, headstock, fixing pin, positioning gasket, and locking nut of the present utility model.

[0017] Reference numerals: 101 - machine tool base; 102 - machine tool headstock; 103 - headstock seat; 104 - spindle box; 201 - horizontal block; 202 - vertical block; 203 - scale plate; 204 - scale pointer; 301 - main screw; 302 - fixing pin; 303 - limit spring; 304 - positioning gasket; 305 - locking nut. Detailed implementation manners

[0018] In order to make the purpose, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0019] As Figures 1 to 3 shown, a spindle box positioning and anti-displacement structure includes a machine tool base 101 and a spindle box 104. A machine tool headstock 102 is fixedly installed on the machine tool base 101, and a headstock seat 103 is fixedly installed on the 10 12. The shape of the headstock seat 103 is I-shaped. One side of the headstock seat 103 away from the machine tool headstock 102 contacts the spindle box 104. A horizontal block 201 is arranged on one side of the headstock seat 103, and the horizontal block 201 can fit with the spindle box 104. A vertical block 202 is arranged on the other side of the headstock seat 103, and the vertical block 202 can fit with the spindle box 104. The horizontal block 201 and the vertical block 202 can limit the position of the spindle box 104. The horizontal block 201 and the vertical block 202 are fixed on the outer wall of the headstock seat 103 by screws, which is convenient for the user to complete the alignment work during installation, and the horizontal block 201 and the vertical block 202 can also prevent the displacement of the spindle box 104 or the headstock seat 103.

[0020] As Figures 2 to 4 shown, a scale plate 203 is also arranged on one side of the headstock seat 103 where the vertical block 202 is arranged. A scale pointer 204 is fixedly installed on one side of the spindle box 104 close to the scale plate 203. The scale pointer 204 is fixed to the outer wall of the spindle box 104 by screws. In the initial state, the scale plate 203 cooperates with the scale pointer 204 to allow the installer or user to confirm the position between the spindle box 104 and the headstock seat 103. Four bolt through holes are evenly distributed on the headstock seat 103. One bolt through hole close to the vertical block 202 in the bolt through holes is an anti-collision through hole, and the anti-collision through hole is twice as large as the other bolt through holes. The purpose is to set an anti-collision device in this bolt through hole. Fixed light holes corresponding to the bolt through holes on the headstock seat 103 are arranged on the spindle box 104, and the diameter of the fixed light holes is the same as that of the bolt through holes. Anti-collision light holes corresponding to the anti-collision through holes on the headstock seat 103 are also arranged on the spindle box 104, and the diameter of the anti-collision light holes is the same as that of the anti-collision through holes.

[0021] As Figures 2 to 4 shown, a main screw rod 301 is further disposed in the bolt through hole of the headstock 103. Threads are provided at both ends of the main screw rod 301. The portion between the two ends of the main screw rod 301 is a smooth rod. The diameter of the smooth rod on the main screw rod 301 is smaller than the diameter of the fixed smooth hole on the headstock 103. Positioning gaskets 304 are further provided at both ends of the main screw rod 301. The positioning gaskets 304 provided at both ends of the main screw rod 301 are respectively in contact with the headstock 103 and the headstock 104. A plurality of locking nuts 305 are threadedly connected to the threads at both ends of the main screw rod 301. The locking nuts 305 are used to connect the headstock 104 and the headstock 103. The locking nuts 305 are in contact with the positioning gaskets 304. A fixing pin 302 is further disposed in the anti-collision through hole on the headstock 103. The length of the fixing pin 302 is less than or equal to the length of the smooth rod on the main screw rod 301 to prevent the locking nut 305 from being unable to be locked. The fixing pin 302 is disposed on the outer wall of the main screw rod 301. The outer wall of the fixing pin 302 is in close contact with the inner wall of the anti-collision hole of the headstock 103. The outer wall of the main screw rod 301 is not in contact with the inner wall of the fixing pin 302. A limiting spring 303 is fixedly installed at one end of the fixing pin 302 close to the headstock 104. The other end of the limiting spring 303 is in contact with the positioning gasket 304. The limiting spring 303 is used to limit the position of the fixing pin 302. When installing the fixing pin 302, first pass the main screw rod 301 through the anti-collision smooth hole on the headstock 104, then install the positioning gasket 304 and the locking nut 305 below the main screw rod 301 first, then place the fixing pin 302 into the anti-collision smooth hole on the headstock 103, then hold the limiting spring 303 with the positioning gasket 304 above the main screw rod 301, then screw the locking nut 305 onto the thread of the main screw rod 301, and then use a wrench to make the positioning gaskets 304 at both ends of the main screw rod 301 closely adhere to the headstock 103 and the headstock 104, and then the position of the fixing pin 302 can be limited by the compressed limiting spring 303.

[0022] Working principle of this structure: When installing the headstock 104, first place the headstock 104 on the 130 through a gantry crane, and then align the horizontal block 201 and the vertical block 202 on the headstock 103 with the fitting portions on the headstock 104. It can be aligned by first making the mounting surfaces of the headstock 103 and the headstock 104 in contact, and then making the headstock 104 slide on the headstock 103 to align the horizontal block 201 and the vertical block 202. Then fix the scale pointer 204 to one side of the headstock 104 through screws, and let the scale pointer 204 cooperate with the scale plate 203 to indicate the installation condition of the headstock 104 and the headstock 103.

[0023] During the operation of the headstock 104, vibrations will occur. The positioning gasket 304 prevents the locking nut 305 from loosening. When the headstock 104 is impacted by the cutting tool, its fixing pin 302 bears the shearing force between the headstock 103 and the headstock 104, and the fixing pin 302 prevents the headstock 103 and the headstock 104 from moving. Without the fixing pin 302, the headstock 103 and the headstock 104 can only rely on the frictional force between the contact surfaces of the headstock 103 and the headstock 104, and the main screw 301 to prevent the headstock 104 from moving, which will greatly increase the risk of the main screw 301 being sheared and breaking.

[0024] The above are only the preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention.

Claims

1. A spindle box positioning anti-displacement structure, comprising a machine tool base (101) and a spindle box (104), wherein a machine tool headstock (102) is fixedly mounted on the machine tool base (101), characterized in that: A headstock (103) is fixedly mounted on the machine tool headstock (102), the headstock (103) being in an I-shaped shape, and four bolt through holes are evenly distributed on the headstock (103), one of the bolt through holes being an anti-collision through hole, and the anti-collision through hole is twice as large as the other bolt through holes, and a fixed light hole corresponding to the bolt through hole on the headstock (103) is provided on the spindle box (104), and the diameter of the fixed light hole is the same as the diameter of the bolt through hole, and an anti-collision light hole corresponding to the anti-collision through hole on the headstock (103) is also provided on the spindle box (104), and the anti-collision light hole is the same as the diameter of the anti-collision through hole.

2. According to claim 1, the spindle box positioning anti-displacement structure is characterized in that: A main screw (301) is also arranged in the bolt through hole of the headstock (103), threads are arranged at both ends of the main screw (301), a smooth rod is provided between the threads at both ends of the main screw (301), positioning washers (304) are also arranged at both ends of the main screw (301), and the positioning washers (304) arranged at both ends of the main screw (301) are in contact with the headstock (103) and the spindle box (104) respectively.

3. According to claim 2, the spindle box positioning anti-displacement structure is characterized in that: The threads at both ends of the main screw (301) are also connected to a plurality of tightening nuts (305) through threads. The tightening nuts (305) are used to connect the main spindle box (104) and the headstock (103). The tightening nuts (305) are in contact with the positioning gasket (304). A fixing pin (302) is also arranged in the anti-collision through hole on the headstock (103). The fixing pin (302) is arranged on the outer wall of the main screw (301).

4. According to claim 3, the spindle box positioning anti-displacement structure is characterized in that: The outer wall of the fixing pin (302) is in close contact with the inner wall of the anti-collision hole of the headstock (103), and the outer wall of the main screw (301) is not in contact with the inner wall of the fixing pin (302). A limiting spring (303) is fixedly installed at one end of the fixing pin (302) close to the spindle box (104), and the other end of the limiting spring (303) is in contact with the positioning gasket (304). The limiting spring (303) is used to limit the position of the fixing pin (302).

5. According to claim 1, the spindle box positioning anti-displacement structure is characterized in that: The side of the headstock (103) away from the machine tool headstock (102) contacts the spindle box (104); a transverse clamping block (201) is arranged on one side of the headstock (103); the transverse clamping block (201) can be matched with the spindle box (104); a vertical clamping block (202) is arranged on the other side of the headstock (103); the vertical clamping block (202) can be matched with the spindle box (104); the transverse clamping block (201) and the vertical clamping block (202) can limit the position of the spindle box (104); the transverse clamping block (201) and the vertical clamping block (202) are fixed to the outer wall of the headstock (103) by screws.

6. The spindle box positioning and anti-displacement structure according to claim 1, characterized in that: A scale plate (203) is also provided on one side of the headstock (103) on which the vertical clamping block (202) is provided, and a scale pointer (204) is also fixedly installed on one side of the spindle box (104) close to the scale plate (203), and the scale pointer (204) is fixed to the outer wall of the spindle box (104) by screws.

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