Anti-seismic structure of spindle head box body of numerical control machine tool

Abstract

The utility model discloses a numerical control machine tool spindle head box body anti-seismic structure which comprises a spindle box body, a spindle head installation pipe is arranged at one end of the spindle box body, an installation groove is formed in the spindle head installation pipe, a cavity is formed in the spindle box body, and an anti-seismic assembly used for increasing the rigidity of the spindle box body is arranged in the cavity. Box body ribs for reinforcing and supporting are arranged at the top end of the shaft head mounting pipe; by utilizing the design of the main shaft box body, the box body ribs and the anti-vibration assembly, the rigidity of the main shaft box body is enhanced and the weight of the main shaft box body is more balanced by additionally arranging the supporting inclined ribs and thickening the box body ribs in the cavity, so that when the main shaft head with the single-layer hollow structure is mounted on the shaft head mounting pipe, the vibration of the main shaft head is reduced, and the service life of the main shaft head is prolonged. While high-speed machining of the single-layer hollow structure spindle head is kept, rigidity and stability of rough and heavy cutting of the spindle head can be improved through connection of the spindle box body and the spindle head.

Description

Technical Field

[0001] The utility model relates to the technical field of numerical control machine tool equipment, in particular to a seismic-resistant structure of a spindle head box of a numerical control machine tool. Background Art

[0002] There are two main design types of machine tool spindle structures in the existing market. The first type of machine tool spindle head has a single-layer hollow structure. This structure is light and can be used for high-speed light processing, but heavy cutting processing will produce large vibrations, resulting in unsatisfactory processing accuracy and finish. The second type of machine tool spindle head adopts a solid structure to supplement the rigidity, but due to the bulkiness of the solid structure, the machine tool moves slowly during high-speed processing, increasing the damage to the motor, and the machine tool processing efficiency is low and the life is short. Therefore, the single-layer hollow structure of the machine tool spindle head is more suitable for machine tool processing. However, the box is mainly used for the installation of the spindle head of CNC machine tools, so there is a lack of a box for shock-proofing the single-layer hollow spindle head. Utility Model Content

[0003] The utility model aims to provide a seismic-resistant structure of a spindle head box of a CNC machine tool to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a seismic-resistant structure of a spindle head box of a CNC machine tool, comprising a spindle box, one end of the spindle box is provided with an axis head mounting tube for installing the spindle head, the interior of the axis head mounting tube is provided with a mounting groove for plugging in the spindle head, the interior of the spindle box is provided with a cavity, the interior of the cavity is provided with a seismic-resistant component for increasing the rigidity of the spindle box, the top end of the axis head mounting tube is provided with a box rib for strengthening support, the seismic-resistant component includes supporting oblique ribs, and the outer wall of the supporting oblique ribs is fixedly connected to the inner wall of the cavity.

[0005] Preferably, the supporting oblique rib is triangular.

[0006] Preferably, the top end of the shaft head mounting tube is fixedly connected to the bottom end of the box body rib, and a coolant spraying pipe for spraying coolant is provided on one side of the bottom of the shaft head mounting tube.

[0007] Preferably, the thickness of the box ribs is 12 mm-20 mm.

[0008] Preferably, a moving tube for vertical movement of the spindle housing is fixedly connected to the other end of the spindle housing, and a limiting claw for limiting rotation of the spindle housing is fixedly connected to the other end of the spindle housing.

[0009] Technical effects and advantages of the utility model:

[0010] The utility model utilizes the design of a spindle box, box ribs and anti-seismic components. By adding supporting oblique ribs inside the cavity and thickening the box ribs, the rigidity of the spindle box is enhanced and the weight of the spindle box is made more balanced. Therefore, when a single-layer hollow structure spindle head is installed on the spindle head mounting tube, the high-speed machining of the single-layer hollow structure spindle head can be maintained through the connection between the spindle box and the spindle head, thereby improving the rigidity and stability of the spindle head in rough and heavy cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model.

[0012] In the figure: 1. spindle housing; 2. shaft head mounting tube; 3. mounting groove; 4. coolant spraying tube; 5. cavity; 6. housing ribs; 7. supporting oblique ribs; 8. moving tube; 9. limiting claws. DETAILED DESCRIPTION

[0013] 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 in 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.

[0014] The utility model provides Figure 1 The seismic-resistant structure of the spindle head box of the CNC machine tool shown includes a spindle box 1, one end of the spindle box 1 is provided with a shaft head mounting tube 2 for installing the spindle head, the interior of the shaft head mounting tube 2 is provided with a mounting groove 3 for plugging in the spindle head, the interior of the spindle box 1 is provided with a cavity 5, the interior of the cavity 5 is provided with a seismic-resistant component for increasing the rigidity of the spindle box 1, the top end of the shaft head mounting tube 2 is provided with a box rib 6 for strengthening the support, the seismic-resistant component includes a supporting oblique rib 7, and the outer wall of the supporting oblique rib 7 is fixedly connected to the inner wall of the cavity 5.

[0015] Specifically, the other end of the spindle housing 1 is fixedly connected to a moving tube 8 for vertical movement of the spindle housing 1, the other end of the spindle housing 1 is fixedly connected to a limiting claw 9 for limiting the rotation of the spindle housing 1, and a coolant spraying pipe 4 for spraying coolant is provided on one side of the bottom of the shaft head mounting tube 2.

[0016] Furthermore, a circular groove is provided at the top of the movable tube 8, and a thread is provided on the inner wall of the circular groove. A threaded rod is inserted and connected through the internal thread of the circular groove. A plurality of limiting claws 9 are provided, which are symmetrically arranged on both sides of the other end of the spindle housing 1. A groove is provided on the side of the limiting claw 9 away from the spindle housing 1, and a limiting strip is clamped inside the groove. The limiting claw 9 is inserted and connected with the limiting strip, so that when the threaded rod rotates, the spindle housing 1 cannot rotate, thereby driving the spindle housing 1 to move linearly along the vertical direction of the bolt rod. The mounting groove 3 is used to install a spindle head with a single-layer hollow structure. The coolant spray pipe 4 sprays cooling when the spindle head is working, so as to cool the cutting tool.

[0017] Specifically, the supporting oblique rib 7 is triangular, the top end of the shaft head mounting tube 2 is fixedly connected to the bottom end of the box body rib 6, and the thickness of the box body rib 6 is 12 mm-20 mm.

[0018] Furthermore, the supporting oblique rib 7 is an isosceles right triangle, and the two right-angled sides of the supporting oblique rib 7 are fixed to the inner wall of the cavity 5 on the side away from the shaft head mounting tube 2 by welding, thereby increasing the overall rigidity of the spindle box body 1 by 50%. The increase in the thickness of the box body rib 6 can make the spindle box body 1 have the same weight after the spindle box body 1 is divided in half along the vertical center line, so that the overall weight of the spindle box body 1 is more balanced, so that the spindle head with a single-layer hollow structure can maintain high-speed cutting and rapid movement while improving the rigidity and stability of rough and heavy cutting by 50%.

[0019] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A spindle head housing anti-seismic structure for a CNC machine tool, comprising a spindle housing (1), one end of the spindle housing (1) being provided with a spindle head mounting tube (2) for mounting a spindle head, the inside of the spindle head mounting tube (2) being provided with a mounting groove (3) for plugging the spindle head, characterized in that: The spindle housing (1) has a cavity (5) formed inside, and an anti-vibration component for increasing the rigidity of the spindle housing (1) is arranged inside the cavity (5). The top end of the shaft head mounting tube (2) is provided with a housing rib (6) for strengthening the support, and the anti-vibration component includes a supporting oblique rib (7), and the outer wall of the supporting oblique rib (7) is fixedly connected to the inner wall of the cavity (5).

2. The anti-seismic structure of the spindle head box of a CNC machine tool according to claim 1, characterized in that: The supporting oblique rib (7) is triangular in shape.

3. The anti-seismic structure of the spindle head box of a CNC machine tool according to claim 1, characterized in that: The top end of the shaft head mounting tube (2) is fixedly connected to the bottom end of the box body rib (6), and a coolant spraying pipe (4) for spraying coolant is arranged on one side of the bottom of the shaft head mounting tube (2).

4. The anti-seismic structure of the spindle head box of a CNC machine tool according to claim 1, characterized in that: The thickness of the box body rib (6) is 12 mm to 20 mm.

5. The anti-seismic structure of the spindle head box of a CNC machine tool according to claim 1, characterized in that: The other end of the spindle housing (1) is fixedly connected to a moving tube (8) for vertical movement of the spindle housing (1), and the other end of the spindle housing (1) is fixedly connected to a limiting claw (9) for limiting the rotation of the spindle housing (1).

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