Spindle box and machine head

Abstract

The application discloses a spindle box and a machine tool head, and relates to the technical field of numerical control machine tools. In the spindle box, a spindle mounting seat is arranged at the front end of a box body and is provided with a spindle mounting hole extending in the up-down direction and used for mounting a spindle; a direct connection seat is correspondingly arranged at the upper end of the spindle mounting seat; the direct connection seat is provided with a driving shaft through hole corresponding to the spindle mounting hole, through which a driving shaft of a driving motor passes to connect the spindle; wherein the direct connection seat is provided with a containing cavity, a reinforcing part and a giving slot; the containing cavity is respectively communicated with the spindle mounting hole and the driving shaft through hole; the reinforcing part is protrudingly arranged on the inner wall of the side wall of the containing cavity extending in the up-down direction and extends in the up-down direction; the giving slot is arranged on the outer wall of the side wall of the containing cavity corresponding to the reinforcing part; the upper side wall of the giving slot is provided with a first connecting hole used for connecting the driving motor; the box body, the spindle mounting seat and the direct connection seat are integrally arranged. The application can reduce the shaking of the direct connection seat relative to the spindle mounting seat.

Description

Technical Field

[0001] This application relates to the field of CNC machine tool technology, and more specifically to spindle boxes and machine tool heads. Background Technology

[0002] In a CNC machine tool, the necessary spindle and drive motor are assembled in the spindle box of the machine head. Generally, the spindle box includes a housing and a spindle mounting base. The rear end of the housing is slidably disposed on one side wall of the outer side of the column in the vertical direction. The spindle mounting base is disposed at the front end of the housing and is provided with a spindle mounting hole extending in the vertical direction for mounting the spindle.

[0003] The drive motor can be mounted on the upper side of the spindle mount via a direct-drive connector. Generally, the direct-drive connector is threaded to the upper side of the spindle mount via a threaded connection. However, when the drive motor drives the spindle to cut the workpiece, the direct-drive connector is prone to vibration relative to the spindle mount, leading to reduced machining accuracy.

[0004] Therefore, how to reduce the vibration of the direct-drive connector relative to the spindle mounting base remains a technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, in order to solve the above-mentioned technical problems, this application provides a spindle box and a machine tool head.

[0006] To solve the above-mentioned technical problems, one technical solution adopted in this application is to provide a spindle box, which has mutually perpendicular vertical, front-back, and left-right directions and includes: Box body; A spindle mounting base is located at the front end of the housing and has a spindle mounting hole extending in the vertical direction for mounting the spindle. And a direct-connect bracket, which is correspondingly set at the upper end of the spindle mounting base; the direct-connect bracket is provided with a drive shaft through hole for the drive motor to pass through and connect to the spindle in relation to the spindle mounting hole; The direct-connector is provided with a receiving cavity, a reinforcing part, and a relief groove; the receiving cavity is connected to the spindle mounting hole and the drive shaft through hole respectively; the reinforcing part protrudes from the inner wall of the side wall of the receiving cavity that extends in the vertical direction and extends in the vertical direction; the relief groove corresponds to the outer wall of the side wall of the receiving cavity where the reinforcing part is located; the upper side wall of the relief groove is provided with a first connecting hole for connecting the drive motor; the housing, the spindle mounting seat, and the direct-connector are integrally formed.

[0007] To solve the above-mentioned technical problems, another technical solution adopted in this application is to provide a machine tool head, which includes a spindle box, a spindle and a drive motor; the spindle box is the aforementioned spindle box, and the spindle is rotatably disposed in the spindle mounting hole; the drive motor is connected to the first connecting hole to be disposed in the direct connection seat; the drive shaft of the drive motor passes through the drive shaft through hole to connect to the spindle.

[0008] Beneficial Effects: Unlike existing technologies, this application reduces the vibration of the direct-connector relative to the spindle mounting base in two ways. First, since the direct-connector and spindle mounting base are integrally connected, there is no vibration between them due to loosening of the connection structure. Second, by providing a reinforcing portion that protrudes from the inner wall of the sidewall extending vertically within the accommodating cavity and extends vertically, and by providing a clearance groove corresponding to the outer wall of the reinforcing portion on the sidewall of the accommodating cavity, and by providing a first connection hole for connecting the drive motor on the upper sidewall of the clearance groove, the rigidity of the direct-connector can be enhanced while facilitating the installation of the drive motor, thereby suppressing the vibration of the direct-connector relative to the spindle mounting base. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the machine tool head structure of this application. Figure 1 Obtained by looking upwards from the lower side of the machine tool head; Figure 2 This is a schematic diagram of the machine tool head structure of this application. Figure 2 Obtained by looking downwards from the top of the machine tool head; Figure 3 This is an exploded view of the machine tool head as described in this application. Figure 2 Obtained by looking diagonally to the left from the right side of the machine tool head; Figure 4 This is a schematic diagram of the oil distribution control manifold of this application; Figure 5 This is a structural schematic diagram of the spindle box of this application. Figure 5 The image is obtained by looking upwards at the lower side of the self-propelled axle box; Figure 6 yes Figure 5 Enlarged schematic diagram of region A in the middle; Figure 7 This is a structural schematic diagram of the spindle box of this application. Figure 7 The image was obtained by looking diagonally to the right from the left side of the self-propelled axle box. Figure 8 This is a structural schematic diagram of the spindle box of the machine tool head according to this application. Figure 8 The image is obtained by looking down from the top of the self-propelled axle box.

[0010] Figure 9 The spindle box of this application Figure 8A schematic cross-sectional view of the right-side structure obtained by cutting along the central section line BB; Figure 10 The spindle box of this application Figure 8 After sectioning along the BB line, and... Figure 9 A three-dimensional schematic diagram with cross-sections of the left-side structure opposite the right-side structure shown.

[0011] Explanation of reference numerals in the attached figures: Machine tool head 10; spindle box 100; vertical direction H; front-back direction L; left-right direction W; housing 110; connecting port 111; pipe through hole 112; mounting protrusion 113; spindle mounting seat 120; spindle mounting hole 121; direct connection seat 130; drive shaft through hole 131; accommodating cavity 132; reinforcing part 133; clearance groove 134; first connecting hole 135; reinforcing assembly 140; support member 141; first support member 141a; second support member 141b; mesh rib part 142; frame rib 1421; front and rear extension rib 14211; first confluence connection part 14212; vertical extension rib 14213; sun rib 1422; radial rib part 14221; second confluence connection part 14222; reinforcing frame plate 143; weight reduction hole 1431; side reinforcing rib 144; Cylinder mounting plate 150; third connecting hole 151; convex ring structure 161; cylindrical structure 162; boss structure 163; solid column 164; lower side plate 180; first liquid guide hole 181; second liquid guide hole 182; nozzle mounting hole 183; rear seat 190; nut seat 191; slider mounting part 192. Drive motor 300; second connecting hole 301; first threaded connector 410; first bolt 411; first nut 412; second threaded connector 420; cutter cylinder 500; rigid liquid supply pipe 610; diverter 620; rigid diverter pipe 630; angled nozzle 640; oil distribution control row 650; slider 700; main shaft 800; transition pad 900. Detailed Implementation

[0012] To enable those skilled in the art to better understand the technical solutions of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0013] It should be noted that all directional indications (such as up, down, left, right, front, back, inside, outside, etc.) in the embodiments of this application are only used to explain the relative positional relationship between the components in the machine tool head, and do not necessarily represent the actual posture of the machine tool head during use. The actual posture of the machine tool head during use can be adjusted according to actual needs. Unless otherwise specified, the integrated configuration mentioned in this application means integral molding. The integrated configuration mentioned in this application includes, but is not limited to, integral casting.

[0014] Please see Figures 1-10 As shown, the machine tool head 10 in this application includes a spindle box 100, a spindle 800, and a drive motor 300. The spindle box 100 has mutually perpendicular vertical directions H, front-back directions L, and left-right directions W, and includes a box body 110, a spindle mounting base 120, and a direct connection base 130.

[0015] The spindle mounting base 120 is located at the front end of the housing 110 and has a spindle mounting hole 121 extending in the vertical direction H. The direct connection seat 130 is located at the upper end of the spindle mounting base 120. The direct connection seat 130 has a drive shaft through hole 131 corresponding to the spindle mounting hole 121.

[0016] The direct-connector 130 includes a receiving cavity 132, a reinforcing part 133, and a clearance groove 134. The receiving cavity 132 connects to the spindle mounting hole 121 and the drive shaft through hole 131. The reinforcing part 133 protrudes from the inner wall of the side wall of the receiving cavity 132, which extends in the vertical direction H, and extends in the vertical direction H. The clearance groove 134 corresponds to the reinforcing part 133 and is located on the outer wall of the side wall of the receiving cavity 132. The upper side wall of the clearance groove 134 has a first connecting hole 135. The housing part 110, the spindle mounting seat 120, and the direct-connector 130 are integrally formed. The spindle 800 is rotatably mounted in the spindle mounting hole 121. The drive motor 300 is connected to the first connecting hole 135 and mounted in the direct-connector 130. The drive shaft of the drive motor 300 passes through the drive shaft through hole 131 to connect to the spindle 800.

[0017] By employing the above methods, the vibration of the direct-connector 130 relative to the spindle mounting base 120 can be reduced in two aspects. Firstly, since the direct-connector 130 and the spindle mounting base 120 are integrally connected, there will be no vibration between them due to loosening of the connection structure. Secondly, by providing a reinforcing portion 133 that protrudes from the inner wall of the sidewall extending in the vertical direction H of the accommodating cavity 132 and extends in the vertical direction H, and by providing a clearance groove 134 corresponding to the reinforcing portion 133 on the outer wall of the sidewall of the accommodating cavity 132, and by providing a first connection hole 135 for connecting the drive motor 300 on the upper sidewall of the clearance groove 134, the rigidity of the direct-connector 130 can be enhanced while facilitating the installation of the drive motor 300, thereby suppressing the vibration of the direct-connector 130 relative to the spindle mounting base 120.

[0018] For example, and not as a limitation, the first connection hole 135 can be connected to the drive motor 300 via the first threaded connector 410 to mount the drive motor 300 on the direct connection seat 130.

[0019] In one example, the first threaded connector 410 may include a first bolt 411 and a first nut 412, and the drive motor 300 is provided with a second connection hole 301. A relief groove 134 is used to make way for the first bolt 411 so that the first bolt 411 can enter the relief groove 134 so that the first bolt 411 can thread-fit with the first nut 412 after passing through the first connection hole 135 and the second connection hole 301.

[0020] In another example, the first threaded connector 410 may include a first bolt 411 and a first nut 412, and the drive motor 300 is provided with a second connection hole 301. A clearance groove 134 is used to make way for the first nut 412 so that the first nut 412 can enter the clearance groove 134 so that the first nut 412 can thread into the first bolt 411 passing through the second connection hole 301 and the first connection hole 135.

[0021] Optionally, such as Figures 1-10 As shown, the housing portion 110 is provided with a reinforcing component 140, which is integrally formed with the housing portion 110 and includes a support member 141 and a mesh reinforcement portion 142. The mesh reinforcement portions 142 are respectively provided on the inner walls of the left side wall and the inner walls of the right side wall of the housing portion 110. The support member 141 extends in the left-right direction W so that its two ends are respectively connected to the mesh reinforcement portions 142.

[0022] The support member 141 includes at least a first support member 141a and a second support frame member. The first support member 141a is spaced apart from the edge of the inner wall of the left side wall and the edge of the inner wall of the right side wall of the housing portion 110. The second support frame member is formed as a reinforcing rib protruding inward from the housing portion 110 and connecting the edge of the inner wall of the left side wall and the edge of the inner wall of the right side wall of the housing portion 110.

[0023] By using the above methods, the overall rigidity of the housing 110 can be enhanced, making the spindle box 100 less prone to deformation, thereby further reducing the vibration of the spindle box 100 when the tool is cutting the workpiece.

[0024] Optionally, one of the first support members 141a is formed as a tool-changing cylinder mounting plate 150, and the machine tool head 10 includes a tool-changing cylinder 500, which is disposed on the tool-changing cylinder mounting plate 150.

[0025] Optionally, the tool-removing cylinder mounting plate 150 is provided with a third connecting hole 151, and the tool-removing cylinder 500 is provided with a fourth connecting hole (not shown in the figure). The third connecting hole 151 and the fourth connecting hole can be connected by a second threaded connector 420 to mount the tool-removing cylinder 500 on the tool-removing cylinder mounting plate 150.

[0026] For details regarding the mounting plate 150 for the cutter cylinder and the cutter cylinder 500, please refer to the relevant records in the prior art, which will not be repeated here.

[0027] Optionally, such as Figures 1-10 As shown, the mesh reinforcement 142 includes frame reinforcement 1421 and sun reinforcement 1422.

[0028] The frame reinforcement 1421 includes front and rear extending reinforcements 14211, a first converging connection portion 14212, and a vertical extending reinforcement 14213. The front and rear extending reinforcements 14211 extend in the front-rear direction L, and the vertical extending reinforcement 14213 extends in a direction perpendicular to the front and rear extending reinforcements 14211. The front and rear extending reinforcements 14211 and the vertical extending reinforcement 14213 converge at the first converging connection portion 14212.

[0029] The solar rib 1422 includes radial rib sections 14221 and multiple second converging connection sections 14222. The multiple radial ribs are distributed at intervals around the outer periphery of the second converging connection sections 14222 and extend outward from the second converging connection sections 14222 in a radial pattern.

[0030] In this structure, multiple radial rib sections 14221 are connected to frame ribs 1421 to form a mesh structure, and at least one radial rib section 14221 is formed by a portion of the front and rear extending ribs 14211 or a portion of the vertical extending ribs 14213. The first confluence connection section 14212 and the second confluence connection section 14222 are both connected to the corresponding first support member 141a.

[0031] By using the above method, the overall rigidity of the box body 110 can be further strengthened by the cooperation of the frame reinforcement 1421 and the sun reinforcement 1422.

[0032] Optionally, such as Figures 1-10 As shown, each solar rib 1422 has at least one radial rib portion 14221 that is connected to the first converging connection portion 14212. This further enhances the overall rigidity of the housing portion 110.

[0033] Optionally, such as Figures 1-10 As shown, at least one first junction connection portion 14212 is a convex ring structure 161, and the left and right side walls of the housing portion 110 are respectively formed with connecting ports 111 that connect the inner side of the convex ring structure 161. The first support member 141a corresponding to the convex ring structure 161 is a cylindrical structure 162. The convex ring structure 161 and the cylindrical structure 162 are integrally formed.

[0034] In this way, the inner space of the convex ring structure 161 and the inner space of the cylindrical structure 162 can reduce the weight of the spindle box 100, while the solid part of the convex ring structure 161 and the solid part of the cylindrical structure 162 can help improve the rigidity of the box body 110.

[0035] It should be noted that the cross-section of the cylindrical structure 162 extending along the vertical direction H and the front-back direction L is either circular or polygonal, but is not limited to these.

[0036] Optionally, such as Figures 1-10 As shown, the second junction connection 14222 is a boss structure 163, and the corresponding first support member 141a is a solid column 164. The cross-sectional area of ​​the boss structure 163 extending along the vertical direction H and the front-back direction L is larger than the cross-sectional area of ​​the solid column 164 extending along the vertical direction H and the front-back direction L. The boss structure 163 and the solid column 164 are integrally formed.

[0037] In this way, the boss structure 163 with a larger cross-section can effectively enhance the rigidity of the housing 110, while the solid body with a smaller cross-section can effectively reduce the weight of the spindle box 100.

[0038] Optionally, such as Figures 1-10 As shown, to further enhance the rigidity of the housing 110 and reduce the weight of the solid column 164, the cross-section of the solid column 164 along the front-rear direction L and the vertical direction H can be a concave polygon, but is not limited thereto. For example, and not as a limitation, the cross-section of the solid column 164 along the front-rear direction L and the vertical direction H can be T-shaped.

[0039] Optionally, such as Figures 1-10 As shown, the reinforcing assembly 140 includes a reinforcing frame plate 143, which is disposed inside the housing portion 110 and is respectively connected to the spindle mounting seat 120, the lower side wall of the housing portion 110, the rear side wall of the housing portion 110, and the first support member 141a corresponding to at least one second confluence connection portion 14222.

[0040] The reinforcing frame plate 143 is spaced apart from the inner walls of the left and right sides of the housing portion 110. At least a portion of the second support member 141b is arranged intersecting with the reinforcing frame plate 143. The first support member 141a connected to the reinforcing frame plate 143 is located below the first support member 141a corresponding to a first junction connection portion 14212. The reinforcing frame plate 143 is provided with a plurality of weight-reducing holes 1431.

[0041] In the above manner, the rigidity of the box body 110 can be further improved by using the reinforcing plate 143, while the weight reduction hole 1431 can reduce the weight of the reinforcing plate 143.

[0042] Optionally, such as Figures 1-10 As shown, the spindle box 100 includes a rigid liquid supply pipe 610, a flow divider 620, a rigid flow divider 630, and a plurality of angled nozzles 640.

[0043] A lower side plate 180 is formed on the lower side of the spindle housing 100, and the housing portion 110, the spindle mounting base 120, and the lower side plate 180 are integrally formed. A first fluid guide hole 181 and a second fluid guide hole 182 are provided on the lower side plate 180 extending rearward from its front side and inward from its rear. A spindle mounting hole 121 penetrates the lower side plate 180, and the first fluid guide hole 181 and the second fluid guide hole 182 are located on both sides of the spindle mounting hole 121.

[0044] The first fluid guide hole 181 and the second fluid guide hole 182 are connected to nozzle mounting holes 183. Multiple nozzle mounting holes 183 are centrally symmetrically distributed about the central axis of the spindle mounting hole 121. Each nozzle mounting hole 183 is connected to a corresponding angled nozzle 640. The angled nozzle 640 is used to spray coolant onto the tool mounted on the spindle 800.

[0045] The rigid liquid supply pipe 610 is connected to the rigid diversion pipe 630 via the diversion device 620. At least one rigid diversion pipe 630 is connected to the first liquid guide hole 181, and at least another rigid diversion pipe 630 is connected to the second liquid guide hole 182.

[0046] Through the above methods, compared to flexible tubes which are prone to vibration due to deformation, the rigid distribution tube 630 and rigid supply tube 610 in this application are less prone to vibration due to deformation, thereby suppressing the vibration of the spindle box 100. Furthermore, the multiple nozzle mounting holes 183 are centrally symmetrically distributed about the central axis of the spindle mounting hole 121, allowing the coolant sprayed by the multiple angled nozzles 640 to be flushed against each other at the tool-workpiece contact point. This enables more comprehensive washing of the chips generated by the tool cutting the workpiece and more uniform cooling of the tool, thereby improving the surface finish of the workpiece and facilitating precision machining.

[0047] It should be noted that the rigid supply tube 610 and the rigid diversion tube 630 can be made of metal, but are not limited to this.

[0048] Optionally, such as Figures 1-10 As shown, a pipe through-hole 112 is provided on the left or right side wall of the housing 110. A mounting protrusion 113 is provided on the outer wall of the left or right side wall of the housing 110. A diversion device 620 is fixed to the mounting protrusion 113. A rigid water supply pipe extends into the housing 110 through the pipe through-hole 112. By way of example and not limitation, the diversion device 620 may be fixed to the mounting protrusion 113 by means of a third threaded connector (not shown).

[0049] Optionally, such as Figures 1-10 As shown, the machine tool head 10 may include an oil distribution control manifold 650, which is disposed in the housing 110. The inlet end of the rigid water supply pipe is connected to the outlet end of the oil distribution control manifold 650, but is not limited thereto.

[0050] Optionally, such as Figures 1-10 As shown, the spindle box 100 may include a rear seat 190, which is provided with a nut seat 191 and a slide mount 192. The machine tool head 10 may include a slide 700, which is fixed to the slide mount 192. The slide 700 is used for slidable connection with a slide rail (not shown) on a column (not shown). The rear seat 190, nut seat 191, slide mount 192, and slide 700 can be found in existing spindle boxes 100 and will not be described in detail here.

[0051] Optionally, such as Figures 1-10 As shown, the reinforcing component 140 includes side reinforcing ribs 144, which are disposed on the side of the rear seat 190 facing the housing portion 110 and respectively disposed on the left and right sides of the housing portion 110. The side reinforcing rib 144 disposed on the left side of the housing portion 110 is connected to the left side wall of the housing portion 110 and has a cavity structure, while the side reinforcing rib 144 disposed on the right side of the housing portion 110 is connected to the right side wall of the housing portion 110 and has a cavity structure.

[0052] Optionally, such as Figures 1-10As shown, the machine tool head 10 may include a transition pad 900, which is located between the direct-connector 130 and the drive motor 300. A first threaded connector 410 passes through a first connecting hole 135, the transition pad 900, and a second connecting hole 301 to mount the drive motor 300 onto the direct-connector 130, but is not limited thereto.

[0053] The above are merely embodiments of this application and do not limit the scope of this patent application. Any equivalent structural or procedural changes made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of this application.

Claims

1. A spindle box, characterized in that, The spindle box has mutually perpendicular vertical, front-back, and left-right directions and includes: Box body; A spindle mounting base is disposed at the front end of the housing and has a spindle mounting hole extending along the vertical direction for mounting the spindle. And a direct-connector is provided at the upper end of the spindle mounting base; the direct-connector is provided with a drive shaft through hole for the drive shaft of the drive motor to pass through and connect to the spindle in relation to the spindle mounting hole; The direct-connector is provided with a receiving cavity, a reinforcing part, and a relief groove; the receiving cavity is connected to the spindle mounting hole and the drive shaft through hole respectively; the reinforcing part protrudes from the inner wall of the side wall of the receiving cavity that extends in the vertical direction and extends in the vertical direction; the relief groove corresponds to the outer wall of the side wall of the receiving cavity where the reinforcing part is located; the upper side wall of the relief groove is provided with a first connecting hole for connecting the drive motor; the housing part, the spindle mounting seat, and the direct-connector are integrally formed.

2. The spindle box according to claim 1, characterized in that, The box body is provided with a reinforcing component, which is integrally formed with the box body and includes a support member and a mesh reinforcement portion; the mesh reinforcement portion is respectively provided on the inner wall of the left side wall and the inner wall of the right side wall of the box body; the support member extends along the left-right direction so that its two ends are respectively connected to the mesh reinforcement portion; The support member includes at least a first support member and a second support frame member; the first support member is spaced apart from the edge of the inner wall of the left side wall of the box part and the edge of the inner wall of the right side wall of the box part; the second support frame member is formed as a reinforcing rib protruding into the box part and connecting the edge of the inner wall of the left side wall of the box part and the edge of the inner wall of the right side wall of the box part.

3. The spindle box according to claim 2, characterized in that, The mesh reinforcement section includes frame reinforcement and sun reinforcement; The frame reinforcement includes front and rear extending reinforcements, a first converging connection portion, and a vertical extending reinforcement; the front and rear extending reinforcements extend along the front and rear direction, and the vertical extending reinforcements extend along a direction perpendicular to the front and rear extending reinforcements; the front and rear extending reinforcements and the vertical extending reinforcements converge at the first converging connection portion. The solar bar includes radial ribs and multiple second converging connection portions; the multiple radial ribs are distributed at intervals around the outer periphery of the second converging connection portions and extend outward from the second converging connection portions in a radial pattern; In this configuration, multiple radial rib sections are connected to the frame ribs to form a mesh structure, and at least one radial rib section is formed by a portion of the front and rear extending ribs or a portion of the vertical extending ribs; the first confluence connection and the second confluence connection are both connected to the corresponding first support member.

4. The spindle box according to claim 3, characterized in that, Each of the solar bars has at least one radial rib portion that is connected to the first converging connection portion.

5. The spindle box according to claim 4, characterized in that, At least one of the first junction connection portions is a convex ring structure, and the left and right side walls of the box body are respectively formed with communication ports connecting the inner side of the convex ring structure; the first support member corresponding to the convex ring structure is a cylindrical structure; the convex ring structure and the cylindrical structure are integrally formed.

6. The spindle box according to claim 4, characterized in that, The second junction connection is a boss structure, and the first support member corresponding to the second junction connection is a solid column; the area of ​​the cross section of the boss structure extending along the vertical and horizontal directions and the front-back directions is greater than the area of ​​the cross section of the solid column extending along the vertical and horizontal directions and the front-back directions; the boss structure and the solid column are integrally formed.

7. The spindle box according to claim 4, characterized in that, The reinforcing assembly includes a reinforcing frame plate, which is disposed inside the housing and is respectively connected to the spindle mounting seat, the lower side wall of the housing, the rear side wall of the housing, and the first support member corresponding to at least one second intersection connection portion; The reinforcing frame plate is spaced apart from the inner walls of the left and right sides of the box body; at least a portion of the second support members are intersected with the reinforcing frame plate; the first support member connected to the reinforcing frame plate is located below the first support member corresponding to a first intersection connection portion; the reinforcing frame plate is provided with multiple weight-reducing holes.

8. The spindle box according to claim 1, characterized in that, The spindle housing includes multiple nozzle mounting holes, which are located on the lower side of the spindle mounting base and on the outer periphery of the spindle mounting holes, and are centrally symmetrically distributed about the central axis of the spindle mounting holes.

9. A machine tool head, characterized in that, The machine tool head includes a spindle box, a spindle, and a drive motor; the spindle box is the spindle box as described in any one of claims 1-7, and the spindle is rotatably disposed in the spindle mounting hole; the drive motor is connected to the first connecting hole to be disposed in the direct connection seat; the drive shaft of the drive motor passes through the drive shaft through hole to connect to the spindle.

10. The machine tool head according to claim 9, characterized in that, The spindle box includes a rigid liquid supply pipe, a flow divider, a rigid flow divider, and multiple angled nozzles; A lower side plate is formed on the lower side of the spindle box, and the box body, the spindle mounting base and the lower side plate are integrally formed; the lower side plate extends from the front side of the lower side plate toward the rear and into the lower side plate and is provided with a first liquid guiding hole and a second liquid guiding hole; the spindle mounting hole penetrates the lower side plate and the first liquid guiding hole and the second liquid guiding hole are respectively located on both sides of the spindle mounting hole; Both the first and second liquid guiding holes are connected to nozzle mounting holes, and the plurality of nozzle mounting holes are centrally symmetrically distributed about the central axis of the spindle mounting hole; each of the nozzle mounting holes is connected to a corresponding angled nozzle; the angled nozzle is used to spray coolant onto the tool mounted on the spindle; The rigid liquid supply pipe is connected to the rigid diversion pipe via a diversion device; at least one rigid diversion pipe is connected to the first liquid guide hole, and at least another rigid diversion pipe is connected to the second liquid guide hole.

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