Split machine tool saddle structure

Abstract

The utility model discloses a split type machine tool saddle structure, include: sliding plate, be equipped with fixed seat on the sliding plate, and the one end of fixed seat is equipped with the scraping plate, the upper saddle is through linear guide rail component and sliding connection with the sliding plate, still be equipped with longitudinal screw rod, and it is through silk seat and scraping plate corresponding connection and drive the linear reciprocating motion of sliding plate, the lower saddle is detachable connection through the positioning pin and the upper saddle, the utility model discloses the saddle is designed into split type, and the difficulty of casting and processing is reduced greatly. The upper saddle, the lower saddle, the sliding plate respectively constitute independent unit module to realize assembly and detection, and the assembly is more flexible and effective, and the efficiency is greatly promoted. Fixed seat and scraping plate are designed into split type structure, and the geometric precision is conveniently scraped and adjusted, and the maintenance hole is reserved above the sliding plate, and the whole saddle need not be disassembled to realize the quick and convenient maintenance, and the downtime is greatly saved.

Description

Technical Field

[0001] This utility model relates to the field of machine tool technology, and in particular to a split-type machine tool saddle structure. Background Technology

[0002] In machine tool design and manufacturing, with the rapid development of the machinery manufacturing industry and increasingly fierce competition, the processing industry is placing higher demands on the control and machining accuracy of CNC machine tools. Machine tool accuracy is affected by many factors, among which the accuracy of the machine tool itself—that is, its geometric accuracy and rigidity—is fundamental. Errors in the manufacturing and assembly processes of various components directly affect its machining accuracy. The difficulty of manufacturing, machining, and assembling parts mainly depends on the structure of the parts.

[0003] The saddle structure of a lathe is particularly important. The saddle is connected to the machine bed via linear guides below and to the machine slide via linear guides above. During machining, the saddle needs to support the weight of the machine slide and the turret itself, as well as the cutting forces, while also achieving longitudinal movement driven by the longitudinal leadscrew. The machine slide above, supported by the saddle and driven by the transverse leadscrew, achieves transverse movement. During lathe machining, the workpiece experiences considerable cutting forces. The saddle's role is to support and distribute these cutting forces, ensuring that the workpiece does not deform or break during machining. The saddle must possess good resistance to deformation and high strength, and it must maintain a stable and smooth state to guarantee the machining quality of the workpiece.

[0004] Traditional machine tool saddles are mostly one-piece structures, such as the one with notification number CN216028117U. While this type of saddle offers high precision, it is difficult to manufacture. In the event of a collision, the entire saddle needs to be replaced, resulting in very high costs. Furthermore, critical structures connecting to the machine tool bed and slide are all located on the saddle. This significantly restricts the saddle's structure and consequently affects its manufacturing difficulty. These critical connection points often require repeated manual scraping, which is extremely tedious and time-consuming, further increasing assembly difficulty and impacting the overall assembly efficiency of the machine. Utility Model Content

[0005] This invention provides a split-type machine tool saddle structure to solve the problems mentioned in the background art. It can improve assembly accuracy while significantly reducing machining difficulty and scraping workload, resulting in lower assembly difficulty and lower maintenance costs.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A split-type machine tool saddle structure, characterized in that:

[0008] include:

[0009] A skateboard, wherein the skateboard is provided with a fixed seat that is detachably connected thereto, and one end of the fixed seat is provided with a scraping plate that is detachably connected thereto;

[0010] The upper saddle is slidably connected to the slide plate via a linear guide rail component. It is also provided with a longitudinal lead screw that is driven and connected to the drive end of the drive component. The lead screw is provided with a lead seat that is correspondingly connected to the scraping plate and drives the slide plate to perform linear reciprocating motion.

[0011] The lower saddle is detachably connected to the upper saddle via a locating pin.

[0012] Preferably, the linear guide rail component includes a linear guide rail and a slider that are slidably connected to each other, the linear guide rail is detachably connected to the slide plate, and the slider is detachably connected to the upper saddle.

[0013] Preferably, the slide plate is provided with an inspection hole that runs through its thickness direction, and the position of the inspection hole corresponds to the position of the scraping plate.

[0014] Preferably, the slide plate is provided with a cover plate that is detachably connected to the inspection hole.

[0015] Preferably, the longitudinal lead screw is provided with a front bearing component and a rear bearing component at both ends.

[0016] Preferably, the drive component is fastened to the upper saddle via a connecting plate.

[0017] Preferably, the driving component is a servo motor.

[0018] Due to the adoption of the above technical solution, the beneficial effects of this utility model are as follows:

[0019] 1. During assembly, this utility model improves the geometric accuracy of the machine tool saddle. Unlike the traditional one-piece saddle structure, this utility model designs the saddle as a split type, and at the same time, the structural features that determine the accuracy are also distributed to the upper saddle and the lower saddle respectively. When controlling a single accuracy, it is not interfered with by other accuracy items, which facilitates higher precision control.

[0020] 2. This utility model reduces casting and processing costs. Through the split design of the saddle, the features of the upper and lower saddles are reduced accordingly, greatly reducing the difficulty of casting and processing.

[0021] 3. This utility model is more efficient in assembly. The split design of the saddle allows for split pre-assembly. The upper saddle, lower saddle, and slide plate each form an independent unit module to achieve assembly and testing, making assembly more flexible and effective and greatly improving efficiency.

[0022] 4. This utility model designs the fixed seat and scraping plate that constitute the nut seat structure as separate structures, which facilitates scraping and adjustment of geometric accuracy. At the same time, an inspection hole is reserved above the slide plate, which can realize quick and convenient maintenance without disassembling the entire saddle seat, greatly saving downtime. Attached Figure Description

[0023] Appendix Figure 1 This is a three-dimensional schematic diagram of the structure of this utility model;

[0024] Appendix Figure 2 This is a schematic front sectional view of the upper saddle structure in this utility model;

[0025] Appendix Figure 3 This is a three-dimensional schematic diagram of the lower saddle structure of this utility model;

[0026] Appendix Figure 4 This is a three-dimensional schematic diagram of the structure of the skateboard in this utility model;

[0027] Appendix Figure 5 This is a schematic front sectional view of the structure of the skateboard in this utility model;

[0028] Appendix Figure 6 This is a three-dimensional schematic diagram of the drive component in this utility model.

[0029] Attached Figure

[0030] 100, Slide plate; 111, Linear guide rail; 112, Slider; 120, Fixing base; 130, Scraper plate; 140, Inspection hole; 141, Cover plate;

[0031] 200, upper saddle 201, pin hole 210, longitudinal lead screw 211, lead screw seat 212, rear bearing assembly 213, front bearing assembly 220, drive component 221, connecting plate;

[0032] 300, lower saddle; 301, pin hole. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the following is a summary description. Figure 1 To be continued Figure 6 The present invention will be further described in detail with reference to embodiments. However, it should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the scope of the present invention. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the present invention.

[0034] This embodiment discloses a split-type machine tool saddle structure, which can significantly reduce the processing difficulty and scraping workload while improving assembly accuracy. It also makes assembly easier and maintenance more cost-effective.

[0035] refer to Figures 1 to 6 Specifically, this includes:

[0036] The slide plate 100 has a detachable mounting base 120. Compared with the traditional one-piece structure, it can be disassembled and assembled separately, which greatly reduces the difficulty of casting and processing. Moreover, one end of the mounting base 120 has a scraper plate 130 detachably connected to it, which is also a separate structure. In the event of a collision, it can be disassembled and replaced separately, making the assembly more flexible and efficient, and greatly improving efficiency.

[0037] Traditional one-piece structures require disassembling the entire saddle in the event of a collision, which is extremely cumbersome and inconvenient. Furthermore, the position and angle of the scraper plate (130°) make manual scraping very difficult and time-consuming, severely impacting normal production. If repair is impossible, the entire structure must be replaced, resulting in very high maintenance costs.

[0038] refer to Figure 1 and Figure 2 It also includes an upper saddle 200, which is slidably connected to the slide plate 100 via a linear guide component (a purchased standard part). The linear guide component includes a linear guide 111 and a slider 112 that are slidably connected to each other. The linear guide 111 is detachably connected to the slide plate 100 (e.g., a fastening connection), and the slider 112 is detachably connected to the upper saddle 200, specifically, it can be a fastening connection.

[0039] refer to Figure 4 and Figure 5 As shown, the linear guide component in this structure adopts a completely different installation method than before. That is, the linear guide component is assembled in reverse. After assembly, the slider 112 is fixed and the linear guide 111 slides. The advantage of this reverse assembly is that, with a fixed saddle length, the slide plate 100 can be made as long as possible, and more tools can be installed.

[0040] Because the mounting surface of the linear guide 111 and the center of the fixed seat 120 have dimensional accuracy requirements, the reverse mounting of the linear guide 111 (i.e., its connection to the slide plate 100) facilitates precision testing by pre-installing the fixed seat 120 onto the slide plate 100. Furthermore, the actual use of four sliders 112 reduces the area connected to the upper saddle 200, resulting in less scraping area, shorter operation time, and greater convenience. In contrast, in the traditional connection method, the linear guide 111 is connected to the upper saddle 200, leading to a larger contact area, more scraping area, and more cumbersome and time-consuming operation.

[0041] refer to Figure 2 As shown, the upper saddle 200 is also provided with a longitudinal lead screw 210 that is driven and connected to the drive end of the drive component 220 (i.e., the servo motor), which can rotate axially under the drive of the drive component 220. The lead screw 211 provided on the longitudinal lead screw 210 is correspondingly connected to the scraper plate 130 and drives the slide plate 100 to perform linear reciprocating motion.

[0042] The longitudinal lead screw 210 has a front bearing component 213 and a rear bearing component 212 at its two ends, respectively. To enable the pre-assembly of the front bearing component 213, the rear bearing component 212, and the drive component 220, the bearing mounting positions and motor mounting positions at both ends are innovatively directly integrated onto the upper saddle 200. Simultaneously, the concentricity accuracy of the bearing mounting holes can be easily ensured through machining, thereby guaranteeing the concentricity requirements of the assembly of the front bearing component 213, the rear bearing component 212, and the drive component 220. This simplifies the traditional structure's requirement to ensure the concentricity of the front and rear bearings and the motor to simply ensuring the concentricity of the motor and the bearings, making the assembly process simpler and more precise.

[0043] Features such as the bearing mounting positions at both ends and the motor mounting position are directly integrated onto the upper saddle. The upper saddle unit consists of a front bearing component 213, a rear bearing component 212, a drive component 220, and a longitudinal lead screw 210. Except for the longitudinal lead screw 210, which is a standard unit purchased, all other components are assembled in a modular manner, which reduces the difficulty of assembly, improves assembly efficiency, and facilitates standardized control.

[0044] refer to Figure 6 As shown, the drive component 220 is securely connected to the upper saddle 200 via a connecting plate 221. In certain special circumstances, when it is necessary to install a motor of a different model or size, simply adding a connecting plate 221 is sufficient; there is no need to add a new motor mount as in the traditional method, thus reducing inventory requirements.

[0045] refer to Figure 3As shown, it also includes a lower saddle 300, which is detachably connected to the upper saddle 200 via a positioning pin (not shown in the figure). That is, both the upper saddle 200 and the lower saddle 300 are provided with pin holes 201 and 301 for the insertion of the positioning pin, which enables quick and accurate assembly of the two.

[0046] The lower saddle 300 is connected to the transverse lead screw of the machine tool bed. The linear guide rail connection here can be assembled and tested in the traditional way. Since it is connected to the upper saddle 200 separately, there is no assembly interference from the longitudinal transmission, and the difficulty and labor intensity are greatly reduced.

[0047] In this embodiment, to facilitate worker disassembly and maintenance, the sliding plate 100 is provided with a through-thickness direction (i.e., Figure 5 The slide plate 100 has an inspection hole 140 (located vertically) corresponding to the position of the scraper plate 130. During maintenance, the scraper plate 130 can be replaced directly through the inspection hole 140 without disassembling the slide plate 100, greatly reducing the difficulty of maintenance and making operation more convenient. Of course, the slide plate 100 is provided with a cover plate 141 detachably connected to the inspection hole 140 to prevent metal shavings or other foreign objects from entering.

[0048] This utility model upgrades the previous integrated screw seat (i.e., the component that drives the linear motion of the slide plate and is connected to the screw seat of the lead screw) structure to the current split structure, which is divided into two parts: a fixed seat 120 and a scraping plate 130. The two parts are tightly connected to each other, which can greatly reduce the difficulty of processing and maintenance.

[0049] Traditionally, there are two main structural designs. One is to cast the nut onto the slide plate, creating a one-piece structure. The advantage is high rigidity, but the disadvantage is the need for repeated disassembly and reassembly during scraping, which is labor-intensive due to the relatively heavy slide plate 100. Importantly, the precision adjustment margin is small; if machining tolerances are exceeded, the bearing housing units at both ends need to be disassembled and modified, leading to numerous subsequent problems. The other design separates the nut from the slide plate 100. The advantage is a larger precision adjustment margin, but slightly lower rigidity.

[0050] This utility model adopts the second method, and on this basis, the nut seat is further divided into two parts according to its function (i.e., a fixed seat 120 and a scraping plate 130, which are fastened together). The fixed seat 120 serves as a guide and is directly installed on the slide plate 100 using a positioning pin, requiring no disassembly after installation. The scraping plate 130 serves as a positioning tool and can be directly installed and removed when adjusting the precision. Since the scraping plate 130 is just a flat plate, the scraping area is smaller, making it easier to install, remove, and place, and more convenient to operate.

[0051] This invention independently divides the slide plate 100, upper saddle 200, and lower saddle 300 into three corresponding units for assembly inspection. When assembling the upper saddle 200 with the slide plate 100, the contact accuracy between the lead screw seat of the longitudinal lead screw 210 in the upper saddle 200 and the scraping plate 130 in the slide plate 100 is checked, and the scraping plate 130 is scraped until the contact accuracy is qualified. After the upper saddle 200 and slide plate 100 have passed the assembly inspection, they can be combined into one unit. The lower saddle 300 is assembled with the upper saddle 200 through the matching installation of the positioning pin and the pin hole 301, and can be directly locked.

[0052] In the manufacturing and assembly of this utility model, the slide plate 100 and the upper saddle 200 can be assembled into a whole, and the lower saddle 300 and the machine tool bed can be assembled into a whole. After the two are combined, the transverse and longitudinal transmission parts of the machine tool can be completed, which facilitates assembly line assembly, ensures accuracy and stability, and greatly improves work efficiency.

[0053] The advantages of this utility model are: improving the geometric accuracy of the machine tool; assembling into multiple parts to improve assembly efficiency; reducing processing difficulty and thus reducing costs; the servo motor and the bearing components at both ends are aligned with the upper saddle; the screw nut is designed as a split type, which facilitates scraping and adjustment of geometric accuracy, reduces labor intensity and improves efficiency.

[0054] This utility model divides the saddle into an upper saddle and a lower saddle, which are assembled and inspected independently. It also innovatively divides the longitudinal lead screw nut fixing seat into a fixed part (i.e., fixing seat 120) and an adjustable part (i.e., scraping plate 130). In this way, the parts that affect the geometric accuracy of the machine tool are separated, reducing the difficulty of casting and processing, thereby further improving the assembly accuracy and reducing the assembly difficulty, and ultimately improving the overall assembly efficiency of the machine.

[0055] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A split-type machine tool saddle structure, characterized in that: Includes a slide plate (100), on which a fixed seat (120) is detachably connected, and at one end of the fixed seat (120) a scraping plate (130) is detachably connected. The upper saddle (200) is slidably connected to the slide plate (100) via a linear guide rail component. It is also provided with a longitudinal lead screw (210) that is driven and connected to the drive end of the drive component (220). The lead screw (211) provided on the longitudinal lead screw (210) is correspondingly connected to the scraper plate (130) and drives the slide plate (100) to perform linear reciprocating motion. The lower saddle (300) is detachably connected to the upper saddle (200) via a positioning pin.

2. The split-type machine tool saddle structure according to claim 1, characterized in that: The linear guide component includes a linear guide (111) and a slider (112) that are slidably connected to each other. The linear guide (111) is detachably connected to the slide plate (100), and the slider (112) is detachably connected to the upper saddle (200).

3. The split-type machine tool saddle structure according to claim 2, characterized in that: The slide plate (100) is provided with an inspection hole (140) that runs through its thickness direction, and the position of the inspection hole (140) corresponds to the position of the scraping plate (130).

4. The split-type machine tool saddle structure according to claim 3, characterized in that: The slide plate (100) is provided with a cover plate (141) that is detachably connected to the inspection hole (140).

5. The split-type machine tool saddle structure according to claim 1 or 2, characterized in that: The longitudinal lead screw (210) is provided with a front bearing component (213) and a rear bearing component (212) at its two ends respectively.

6. The split-type machine tool saddle structure according to claim 1 or 2, characterized in that: The drive component (220) is fastened to the upper saddle (200) via a connecting plate (221).

7. The split-type machine tool saddle structure according to claim 1, characterized in that: The drive component (220) is a servo motor.

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