Horizontal boring and milling machine main shaft box structure

Abstract

The utility model discloses a horizontal boring machine main shaft box structure belongs to horizontal boring head field, including slide saddle base, the slide saddle base is assembled with square slide ram through the hard rail, wherein, square slide ram can realize axial movement on slide saddle base through the hard rail, be provided with main shaft box on square slide ram, be provided with W axle on main shaft box, and main shaft box can drive W axle and realize axial movement along the extension direction of square slide ram through drive guide mechanism, drive guide mechanism includes the screw rod of setting in square slide ram top through bearing seat, main shaft box is driven with screw rod nut and screw rod transmission cooperation, one end of screw rod can be connected with power mechanism. Compared with the ordinary boring head main shaft by W axle, mandrel, sleeve and so on many parts assembly, this boring head main shaft mainly relies on W axle to realize the function, reduces the high accuracy part quantity and processing difficulty, and the manufacturing cost is reduced greatly.

Description

Technical Field

[0001] This utility model relates to the field of horizontal boring head technology, and in particular to a structure of a horizontal boring machine spindle box. Background Technology

[0002] Horizontal boring machines are the most widely used type of boring machine. They are primarily used for hole machining. Besides enlarging pre-cast or machined holes on workpieces, horizontal boring machines can also mill planes, drill, machine end faces and the outer diameter of flanges, and cut threads. They are mainly used in single-piece, small-batch production and repair workshops. In horizontal boring machines, the spindle system is the core component for achieving boring machining accuracy and efficiency; its structural design directly affects the equipment's manufacturing cost, motion stability, and machining adaptability.

[0003] Traditional horizontal boring head spindles mostly adopt a multi-part assembly structure, mainly composed of key components such as the W-axis, mandrel, and bushing. To ensure the accuracy of boring, the mandrel and bushing need to achieve high-precision fit. The assembly and debugging between parts is difficult, and the fit clearance needs to be repeatedly calibrated, resulting in high overall manufacturing costs. In addition, the multi-part assembly structure is prone to problems such as increased fit clearance and coaxiality deviation due to wear and vibration during long-term use. This not only affects the spindle's motion accuracy but may also shorten the equipment's service life and increase later maintenance costs and downtime. Utility Model Content

[0004] The purpose of this utility model is to solve the problem that the existing horizontal boring head spindle adopts a multi-part assembly structure, which makes the assembly and debugging between parts difficult and requires repeated calibration of the fit clearance, resulting in high overall manufacturing costs. Therefore, a horizontal boring machine spindle box structure is proposed.

[0005] To achieve the above objectives, the present invention employs the following technology: a horizontal boring machine spindle box structure, including a saddle base, on which a square slide block is mounted via a rigid rail, wherein the square slide block can move axially on the saddle base via the rigid rail, a spindle box is provided on the square slide block, and a W-axis is provided on the spindle box, wherein the spindle box can drive the W-axis to move axially along the extension direction of the square slide block via a drive guide mechanism.

[0006] As a further description of the above technical solution: the drive guide mechanism includes a lead screw mounted on the top of the square slide block via a bearing seat, the main spindle box is driven by the lead screw nut, and one end of the lead screw can be connected to the power mechanism.

[0007] As a further description of the above technical solution: the drive guide mechanism also includes a wire gauge disposed on the top of the square slide block, and the spindle box is provided with a slide block that slides with the wire gauge.

[0008] As a further description of the above technical solution: the number of the wire gauges is at least two, and the wire gauges are arranged in parallel intervals along the length direction on the top of the square slide block.

[0009] As a further description of the above technical solution: the end of the square slide block is provided with a support bearing that can constrain the radial movement of the W axis.

[0010] As a further description of the above technical solution: the bottom of the sliding saddle base is provided with a positioning pin, and the bottom of the hard rail is provided with a number of positioning holes along its length direction. The positioning pin and the positioning holes cooperate to restrict the axial movement of the square slide block on the sliding saddle base.

[0011] As a further description of the above technical solution: a lubricating oil injection hole is provided at the connection between the rigid rail and the sliding saddle base.

[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0013] Compared to ordinary boring head spindles which require assembly of multiple parts such as W-axis, mandrel, and bushing, this type of boring head spindle mainly relies on the W-axis to achieve its function, reducing the number of high-precision parts and the processing difficulty, and significantly reducing manufacturing costs;

[0014] The square slide block can move axially by connecting to the slide saddle base via a hardened rail. The W-axis spindle box can move along the W-axis via the gauge and lead screw on the square slide block, meeting the position adjustment and feed requirements of boring head machining and ensuring the reliability of machining motion. Attached Figure Description

[0015] Figure 1 A schematic diagram of the overall structure according to an embodiment of the present utility model is shown;

[0016] Figure 2 A partially cutaway schematic diagram according to an embodiment of the present invention is shown.

[0017] Legend:

[0018] 1. Saddle base; 2. Square slide block; 3. Spindle box; 4. Line gauge; 5. Lead screw; 6. Support bearing; 7. W-axis. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0020] Reference Figures 1-2 This embodiment provides a horizontal boring machine spindle box structure, including a saddle base 1, on which a square slide block 2 is mounted via a rigid rail. The square slide block 2 can move axially on the saddle base 1 via the rigid rail. A spindle box 3 is provided on the square slide block 2, and a W-axis 7 is provided on the spindle box 3. The spindle box 3 can drive the W-axis 7 to move axially along the extension direction of the square slide block 2 via a drive guide mechanism.

[0021] In this invention, the sliding saddle base 1 serves as a fixed base. The square slide block 2 is initially positioned at a preset location on the sliding saddle base 1, and the spindle box 3 and W-axis 7 are initially fixed on the square slide block 2. According to the position requirements of the boring area of ​​the workpiece to be processed, the square slide block 2 moves axially along the extension direction of the hard rail through the sliding engagement between its bottom and the hard rail on the sliding saddle base 1. During the movement of the square slide block 2, the spindle box 3 and W-axis 7 are moved to a preset rough positioning position close to the processing area. Then, the square slide block 2 stops moving and remains stable. After the position of the square slide block 2 is fixed, according to the needs of boring processing, the drive guide mechanism drives the spindle box 3 to move axially along the extension direction of the square slide block 2. Since the W-axis 7 is set on the spindle box 3, the spindle box 3 drives the W-axis 7 to move towards the boring part of the workpiece until the W-axis 7 reaches the preset processing start position and begins boring. During the processing, the drive guide mechanism continuously controls the moving speed and stroke of the spindle box 3 to achieve smooth feed of the W-axis 7 and ensure processing accuracy.

[0022] Specifically, the drive and guide mechanism includes a lead screw 5 mounted on the top of the square slide block 2 via a bearing seat, and the spindle box 3 is driven by the lead screw nut and the lead screw 5. One end of the lead screw 5 can be connected to the power mechanism. The drive and guide mechanism also includes a wire gauge 4 mounted on the top of the square slide block 2, and a slide seat that slides with the wire gauge 4 is mounted on the spindle box 3.

[0023] When the power mechanism is started, its output power is transmitted to the lead screw 5. When the lead screw 5 rotates, the lead screw nut cannot rotate synchronously with the lead screw 5, so it will generate axial linear motion along the axis of the lead screw 5, thereby driving the spindle box 3 connected to it to move axially synchronously. The slide on the spindle box 3 forms a sliding fit with the guide rail 4. When the spindle box 3 is driven to move by the lead screw nut, the slide will slide along the track of the guide rail 4. The guide rail 4 restricts the displacement of the spindle box 3 in the direction perpendicular to the movement direction, ensuring that the spindle box 3 can only move linearly along the extension direction of the guide rail 4. Through the driving guidance of the lead screw 5 and the guide rail 4, the spindle box 3 can move axially stably and accurately along the top of the square slide 2, thereby driving the W axis 7 on it to achieve fine feed that meets the machining requirements and satisfies the precision requirements of boring.

[0024] It should be noted that there are at least two gauge rods 4, and the gauge rods 4 are arranged in parallel intervals along the length of the top of the square slide block 2. The at least two parallel gauge rods 4 can form double-sided support on the spindle box 3, which greatly improves the overall support rigidity, effectively suppresses warping and shaking of the spindle box 3 during movement, and ensures that it always maintains a stable posture.

[0025] Specifically, the end of the square slide block 2 is provided with a support bearing 6 that can constrain the radial movement of the W-axis 7. The W-axis 7 is the core execution component of the boring process. The radial limit of the W-axis 7 by the support bearing 6 prevents precision defects such as ellipticity and taper from occurring in the boring hole due to movement.

[0026] Specifically, the bottom of the slide saddle base 1 is provided with a positioning pin, and the bottom of the hard rail is provided with several positioning holes along its length. The positioning pin and the positioning holes cooperate to restrict the axial movement of the square slide block 2 on the slide saddle base 1. A lubricating oil injection hole is provided at the connection between the hard rail and the slide saddle base 1.

[0027] During the boring process, the rigid fit between the locating pin and the locating hole forms a reliable axial limit, firmly fixing the square slide block 2 in the target position, avoiding positional deviation during the machining process, and significantly improving the consistency of boring dimensional accuracy and surface quality. The lubricating oil injection hole is opened at the connection surface between the hard rail and the slide saddle base 1. Lubricating oil is added into the injection hole by tools such as an oil gun. Under pressure, the lubricating oil flows into the sliding mating surface between the hard rail and the slide saddle base 1 along the injection hole, forming a continuous oil film between the contact surfaces. The presence of the oil film can greatly reduce the friction coefficient between the hard rail and the slide saddle base 1, reduce the resistance when the square slide block 2 moves the hard rail, and make the axial movement of the square slide block 2 more stable and smooth.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A horizontal boring machine spindle box structure, characterized by, The system includes a saddle base (1), on which a square slide block (2) is mounted via a rigid rail. The square slide block (2) can move axially on the saddle base (1) via the rigid rail. A spindle box (3) is provided on the square slide block (2), and a W-axis (7) is provided on the spindle box (3). The spindle box (3) can drive the W-axis (7) to move axially along the extension direction of the square slide block (2) via a drive guide mechanism.

2. The structure of the spindle box of a horizontal boring machine according to claim 1, wherein The drive guide mechanism includes a lead screw (5) mounted on the top of the square slide block (2) via a bearing seat. The main spindle box (3) is driven by the lead screw nut and the lead screw (5). One end of the lead screw (5) can be connected to the power mechanism.

3. The horizontal boring machine spindle box structure according to claim 2, wherein The drive guide mechanism also includes a wire gauge (4) set on the top of the square slide block (2), and a slide block that slides with the wire gauge (4) is provided on the spindle box (3).

4. The structure of the spindle box of a horizontal boring machine according to claim 3, wherein The number of the gauges (4) is at least two, and the gauges (4) are arranged in parallel intervals along the length of the top of the square slide block (2).

5. The horizontal boring machine spindle box structure according to claim 1, wherein The end of the square slide block (2) is provided with a support bearing (6) that can constrain the radial movement of the W axis (7).

6. The structure of a horizontal boring machine spindle box according to claim 1, characterized in that, The bottom of the sliding saddle base (1) is provided with a positioning pin, and the bottom of the hard rail is provided with several positioning holes along its length. The positioning pin and the positioning holes cooperate to restrict the axial movement of the square slide block (2) on the sliding saddle base (1).

7. The structure of the spindle box of a horizontal boring machine according to claim 6, wherein A lubricating oil injection hole is provided at the connection between the hard rail and the sliding saddle base (1).

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