A machine tool base with interchangeable front and rear chip removal functions

Abstract

This utility model relates to the field of machine tool technology and discloses a machine tool base with interchangeable front and rear chip removal functions. It includes a base and a chip conveyor. The base has multiple chip removal grooves evenly distributed along its length on its upper surface, and each groove contains a screw chip removal mechanism for discharging chips. One end of each groove extends to the front end of the base and is fitted with a first flange. By providing a first flange, a second flange, and corresponding chip removal ports at the front and rear ends of the base, respectively, and allowing the drive end of the screw chip removal mechanism to be selectively installed at either end, the chip conveyor can be switched accordingly, achieving interchangeable front and rear chip removal functions. For example, in workshops with limited layout, the chip removal direction can be flexibly switched from the front to the rear without adjusting the overall machine tool placement, significantly improving space utilization and overcoming the limitations of fixed chip removal directions in traditional machine tools.

Description

Technical Field

[0001] This utility model relates to the field of machine tool technology, specifically to a machine tool base with interchangeable front and rear chip removal functions. Background Technology

[0002] China's new energy vehicle industry has entered a stage of rapid growth in recent years, and my country has become the world's largest new energy vehicle market. Competition in the automotive and auto parts industry has intensified, and the requirements for precision machining and processing efficiency of auto parts have continued to increase.

[0003] Traditional metal cutting machine tools are mostly single-spindle, single-station machines, which suffer from drawbacks such as limited processing capabilities, low efficiency, and high production costs. In contrast, multi-spindle, multi-station special-purpose machine tools with high process integration are increasingly favored by the market due to their high-efficiency processing characteristics.

[0004] Multi-spindle, multi-station special-purpose machine tools can process multiple workpieces simultaneously, greatly improving processing efficiency. When processing aluminum workpieces, a large amount of aluminum chips are generated. Aluminum is a light metal material, and under the action of micro-emulsified cutting fluid, the viscosity of aluminum chips increases, making them very easy to adhere to or accumulate on the machine tool base, which can easily affect processing quality and accuracy. Therefore, it is necessary to remove the waste chips in a timely manner.

[0005] However, most machine tool bases currently have relatively fixed and single chip removal directions, which can only achieve chip removal in one direction and cannot well meet the requirements of machine tool space position and machining feed direction. They also have poor interchangeability. Therefore, it is necessary to propose a machine tool base with interchangeable front and rear chip removal functions. Utility Model Content

[0006] To address the technical problems existing in the background art, this utility model proposes a machine tool base with interchangeable front and rear chip removal functions.

[0007] The present invention proposes a machine tool base with interchangeable front and rear chip removal functions, including a base and a chip conveyor. The base is characterized in that a plurality of chip removal grooves are evenly distributed along the length of the base on the upper end surface, and each chip removal groove is equipped with a screw chip removal mechanism for discharging the waste chips outward.

[0008] One end of the chip removal groove extends to the front end of the base and is fitted with a first flange face, on which a first chip removal port is provided; the other end of the chip removal groove extends to the rear end of the base and is fitted with a second flange face, on which a second chip removal port is provided.

[0009] The drive end of the screw chip conveyor is mounted on the first flange face or the second flange face, and the conveying part of the waste chip conveyor is located below the first chip discharge port or the second chip discharge port to realize the interchangeability of the front chip discharge.

[0010] The screw chip removal mechanism includes a screw disposed in a chip removal groove, the screw having helical blades on its circumferential surface, and the screw end being driven by a motor;

[0011] To address the issue of fixed chip removal direction in traditional machine tools, which makes them difficult to adapt to workshop layouts, this design achieves interchangeable front and rear chip removal by using a "double flange face + switchable drive end". Multiple chip removal slots are distributed along the length of the base, covering the processing area. The screw chip removal mechanism drives the waste chips to move forward and backward by reversing the rotation. When switching, it is only necessary to disassemble and install the screw drive end from the first flange face to the second flange face and adjust the position of the waste chip conveyor accordingly. There is no need to modify the main layout of the machine tool, which is suitable for space-constrained scenarios such as new energy vehicle parts workshops, and the space utilization rate is greatly improved.

[0012] As a further optimization of this utility model, when switching to rear-end chip discharge, a chip guide pipe connected to the second chip discharge port is installed on the second flange surface, and the open end of the chip guide pipe extends to the top of the conveying section of the waste chip conveyor.

[0013] The chip guide tube is made of wear-resistant steel with an inclination angle of ° to ensure that the waste chips slide smoothly to the conveyor under the action of gravity, avoiding the aluminum chips from being blocked by the cutting fluid. The chip guide tube is connected to the flange of the second flange face, and the connection is sealed with an oil-resistant rubber gasket to prevent chip leakage, which is suitable for the discharge of a large amount of aluminum chips in the processing of new energy vehicle parts.

[0014] As a further optimized solution of this utility model, there are four chip discharge troughs distributed at equal intervals. The second chip discharge port at the rear end of the two middle chip discharge troughs transmits the waste chips to the conveying part of the waste chip conveyor through the second chip guide pipe. The second chip discharge port at the rear end of the chip discharge troughs on the left and right sides transmits the waste chips to the conveying part of the waste chip conveyor through the first chip guide pipe.

[0015] The four-chip-discharge design covers the entire machining area of ​​the machine tool. The two middle channels collect waste chips through the second chip guide pipe, and the two side channels collect waste chips through the first chip guide pipe. This avoids the conveyor from being lengthened due to dispersed chip discharge and shortens the conveying path. The diameter of the chip guide pipe is matched with the chip discharge volume to ensure balanced chip discharge efficiency.

[0016] As a further optimized solution of this utility model, one end of the chip guide tube is fixed to the second flange face through a flange connector, and the other end of the chip guide tube is inclined downward to the top of the conveying part of the waste chip conveyor.

[0017] The flange connection ensures that the chip guide tube is installed firmly, and the downward tilting design uses gravity to accelerate chip removal, solving the problem of high stickiness and easy accumulation of aluminum chips, and greatly improving the chip removal speed.

[0018] As a further optimization of this utility model, a baffle is installed on the outside of the base, and chip guide plates are installed on the inner walls of both sides of the baffle. The end of the chip guide plate away from the baffle is inclined downward and extends to the top of the opening of the adjacent chip discharge groove.

[0019] The enclosure prevents waste chips from splashing during processing, and the protection range covers the moving area of ​​the machine bed saddle. The chip guide plate guides the scattered waste chips into the chip discharge groove, which greatly improves the collection rate and reduces the deviation in processing accuracy caused by waste chip residue, such as aluminum chips scratching the surface of the workpiece.

[0020] As a further optimization of this utility model, the front end of the chip guide plate has a chip removal area on the side near the chip removal groove; when switching to front chip removal, the chip removal area is set above the conveying part of the waste chip conveyor; when switching to rear chip removal, the drive end of the screw chip removal mechanism is located below the chip removal area, and a protective cover and a partition are installed on the outside of the drive end of the screw chip removal mechanism, so that the waste chips and cutting fluid are introduced into the chip removal groove through the partition;

[0021] The chip removal area is directly connected to the conveyor during chip removal at the front end, and the drive components are isolated by a protective cover during chip removal at the rear end. The partition guides the waste chips into the tank to prevent the cutting fluid from leaking out. This design ensures that the waste chip collection efficiency is consistent under different chip removal directions and is suitable for complex chip removal scenarios of multi-spindle machining.

[0022] As a further optimization of this utility model, the upper surface of the base is equipped with symmetrically distributed lifting devices, and the inner walls on both sides of the chip removal groove are equipped with connecting seats corresponding to the bottom sides of the lifting devices. The bottom of the lifting devices is locked and fixed to the connecting seats by bolts. The lifting devices include connecting blocks that are fixed to the connecting seats by bolts, and lifting rings are installed at the upper end of the connecting blocks.

[0023] The lifting device is rigidly connected to the base via a connecting seat, ensuring the base is stable during lifting. The lifting ring is made of forged steel, which is compatible with workshop cranes and shortens the base installation and commissioning time.

[0024] As a further optimization of this utility model, the upper end face of the base is equipped with guide rails located on both sides of the chip removal groove opening, and a saddle is slidably mounted on multiple guide rails.

[0025] The sliding fit between the guide rail and the saddle ensures the motion accuracy during machining, increases the machine tool span, thereby improving the overall rigidity of the base and reducing the vibration amplitude during machining, thus improving the machining stability of the machine tool. The guide rail is located on both sides of the chip removal groove to prevent waste chips from directly contacting the guide rail and reduce wear.

[0026] As a further optimized solution of this utility model, two guide rails between two adjacent chip removal grooves are arranged opposite to each other, thereby forming a first oil collection groove on the upper surface of the base for collecting lubricating oil for intermediate guide and transmission components. The bottom surface of the first oil collection groove is an inclined surface, and the lower end of the inclined surface faces the rear end of the base and has a first oil guide port. An oil receiving box is provided at the outlet of the first oil guide port.

[0027] The first oil tank collects lubricating oil from the middle area of ​​the guide rail. The sloping design directs the oil flow to the first oil inlet. The oil collection box can be reused after recycling, reducing lubricating oil consumption and meeting the environmental protection requirements of the new energy workshop.

[0028] As a further optimized solution of this utility model, a second oil collection groove is formed between the two sides of the upper surface of the base and the adjacent guide rail for collecting the guide lubricating oil on both sides. The bottom surface of the second oil collection groove is inclined, and the lower end of the inclined surface faces the rear end of the base and has a second oil guide port. The second oil guide port is connected to the oil receiving box through an oil pipe.

[0029] The second oil collection tank collects lubricating oil from both guide rails, working in conjunction with the first oil collection tank to achieve full-area oil control, preventing lubricating oil from mixing into the chip discharge tank and contaminating the waste chips, thereby improving the purity of aluminum chip recycling. The sloping design ensures no oil residue, and an oil-resistant hose is used to guide the oil into the oil collection box for centralized recycling.

[0030] As a further optimization of this utility model, multiple foot mounting positions are arranged around the base to improve the installation stability of the machine tool.

[0031] The machine tool base with interchangeable front and rear chip removal functions proposed in this utility model has the following beneficial effects:

[0032] (i) By setting a first flange face, a second flange face and a corresponding chip discharge port at the front and rear ends of the base respectively, the drive end of the screw chip discharge mechanism can be selectively installed at either the front or rear end, and the waste chip conveyor will switch positions accordingly, realizing the interchange of front and rear chip discharge functions. For example, in the case of limited workshop layout, the chip discharge direction can be flexibly switched from the front end to the rear end without adjusting the overall placement of the machine tool, greatly improving the space utilization rate and solving the limitation of fixed chip discharge direction of traditional machine tools.

[0033] (ii) Four equally spaced chip removal grooves independently remove chips through a screw chip removal mechanism. The middle chip removal groove is connected to the waste chip conveyor via the second chip guide pipe, and the two side chip removal grooves are connected to the waste chip conveyor via the first chip guide pipe. The inclined design of the chip guide pipe accelerates the flow of waste chips and avoids aluminum chips from adhering and accumulating due to cutting fluid. This is conducive to improving the actual chip removal capacity and is especially suitable for the rapid removal of large amounts of aluminum chips in the processing of new energy vehicle parts.

[0034] (iii) The enclosure prevents the waste chips from splashing, and the scattered waste chips are guided into the chip discharge trough by the chip guide plate. The chip discharge area is directly connected to the conveyor when chip discharge is at the front end, and the waste chips are guided into the trough by the protective cover and partition when chip discharge is at the rear end. This design can greatly improve the waste chip collection rate and reduce the machining accuracy deviation caused by waste chip residue.

[0035] (iv) The sliding fit between the guide rail and the saddle can increase the machine tool span, thereby improving the overall rigidity of the base and reducing the vibration amplitude during processing, thus improving the processing stability of the machine tool. The lifting device is fixed by the connecting seat, which facilitates the overall lifting and maintenance of the base and shortens the installation and commissioning time. Moreover, the base can be adapted to multi-spindle multi-station special machine tools, which can not only meet the high-efficiency processing of new energy vehicle parts, but also be used for cutting and chip removal of other metal materials. By quickly switching the chip removal direction, it can adapt to different production line layouts, greatly improve the equipment versatility, and reduce the enterprise's special equipment procurement costs.

[0036] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the forward-direction chip removal structure of this utility model;

[0038] Figure 2 This is a schematic diagram of the rearward chip removal structure of this utility model;

[0039] Figure 3 This is a schematic diagram of the base structure of this utility model;

[0040] Figure 4 This is a schematic diagram of the lifting device structure of this utility model.

[0041] Figure Descriptions: 1. Base; 2. Waste chip conveyor; 3. Chip discharge trough; 4. Screw chip discharge mechanism; 5. First chip guide pipe; 6. Second chip guide pipe; 7. Enclosure; 8. Chip guide plate; 9. Chip discharge area; 10. Lifting device; 101. Connecting block; 102. Lifting ring; 11. First flange face; 12. First chip discharge port; 13. Second flange face; 14. Second chip discharge port; 15. Guide rail; 16. Connecting seat; 17. First oil collection trough; 18. First oil guide port; 19. Second oil collection trough; 20. Second oil guide port; 21. Saddle; 22. Foot mounting position. Detailed Implementation

[0042] The embodiments of this utility model are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0043] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0044] Please see Figures 1-4 In machine tool processing, traditional machine tool bases have a fixed chip removal direction, making it difficult to adapt to different spatial positions and machining feed directions, resulting in poor interchangeability. This utility model addresses this pain point with an innovative design of a machine tool base featuring interchangeable front and rear chip removal functions. It adopts a "double flange surface + switchable drive" design to achieve flexible interchangeability of front and rear chip removal functions. The specific implementation method is as follows:

[0045] like Figures 1-3 As shown, the base 1 is integrally cast from HT300 gray cast iron. The machining area is covered by four chip removal grooves 3. Together with the screw chip removal mechanism 4 and the chip guiding system, it solves the problem of aluminum chips accumulating due to the adhesion of cutting fluid.

[0046] The waste chips generated during processing are intercepted by the enclosure 7 and guided by the chip guide plate 8, falling into the chip discharge trough 3. The screw chip discharge mechanism 4 pushes the waste chips to the front or rear end through the spiral blades, and discharges them through the corresponding chip discharge port and the waste chip conveyor 2. When switching the chip discharge direction, only the position of the screw drive end needs to be adjusted and the chip guide component needs to be replaced. There is no need to change the main layout of the machine tool, which is suitable for workshop space-constrained scenarios.

[0047] like Figure 1 and Figure 2 As shown, four chip removal grooves are evenly distributed along the length of the base, with a U-shaped cross-section and a bottom radius of 60mm. The inner wall is ground after high-frequency quenching to reduce aluminum chip adhesion. A 50mm gap is reserved between the two sides of the groove and the guide rail 15 to prevent waste chips from directly contacting the guide rail.

[0048] The screw of the screw chip conveyor is made of 40Cr steel with heat treatment and WC-Co alloy overlay welding on the surface. The spiral blade has a lift angle of 15° and a gap of 5-8mm between the edge and the groove wall to ensure a pushing efficiency of ≥95%. The drive end is a YE2 series three-phase asynchronous motor, which outputs a torque of 300N・m through a reducer. The motor flange is fixed to the first / second flange face by 4 M16 bolts and the key connection transmits power.

[0049] like Figure 3 The front-end chip removal structure shown:

[0050] The first flange face 11 is made of Q235 steel plate and welded to the front end of the base. The first chip removal port 12 is opened in the center and the edge of the port is rounded with R5mm to prevent chip scraping.

[0051] The waste conveyor 2 is a scraper chain type, with its head located 300mm directly below the first chip discharge port, and chip baffles installed on both sides to prevent splashing.

[0052] like Figure 2 and Figure 3 The rear chip removal structure shown:

[0053] The second flange face 13 is symmetrical to the front end structure. The second chip discharge port 14 is connected to the conveyor through the chip guide pipe. The chip discharge grooves on both sides are equipped with the first chip guide pipe 5, and the two grooves in the middle are equipped with the second chip guide pipe 6. All of them are fixed by flange connectors (the sealing gasket is oil-resistant rubber with a thickness of 5mm). The inclination angle is 30° to ensure that the aluminum chips slide smoothly under the gravity and cutting fluid flushing. The height of the outlet end from the conveyor belt is ≤100mm.

[0054] like Figure 1 and Figure 2 As shown, the enclosure 7 is a welded frame made of cold-rolled steel plate, which is fixed to the edge of the base by M10 expansion bolts, and the inner side is lined with 1mm thick sound-absorbing cotton to reduce noise.

[0055] The chip guide plate 8 is made of 65Mn steel plate with a polytetrafluoroethylene anti-stick coating on the surface. It is connected to the inner wall of the enclosure by an angle steel bracket, inclined at 15° towards the chip discharge trough, and extends 50mm above the chip discharge trough opening to ensure that all scattered waste chips are guided into the trough.

[0056] like Figure 1 As shown, when switching to front-end chip removal, chip removal zone 9 is located directly above the conveyor, and the end of the chip guide plate is aligned with the edge of the chip removal zone;

[0057] like Figure 2 As shown, when switching to rear-end chip removal, a protective cover is installed on the outside of the motor of the screw chip removal mechanism, and a rubber baffle is installed below it. The bottom edge of the baffle is inclined downward to the chip removal groove to prevent cutting fluid leakage.

[0058] like Figure 1 and Figure 3 As shown, the guide rail 15 is a rectangular hard rail and is symmetrically distributed on both sides of the chip removal groove. It is fixed to the base boss by bolts. The height difference between the rail surface and the chip removal groove opening is 50mm to avoid the accumulation of waste chips affecting the sliding. The clearance between the saddle 21 and the guide rail is 0.03-0.05mm to ensure the feed accuracy is ≤0.01mm / 1000mm.

[0059] like Figure 3 As shown, the first oil collection tank 17 is located inside the two guide rails between the adjacent chip removal tanks. The bottom of the tank is inclined at 5° towards the rear end of the base. The end is provided with a first oil guide port 18 and connected to the oil collection box to collect the lubricating oil in the middle area of ​​the guide rails.

[0060] The second oil collection tank 19 is located between the two sides of the base and the guide rail. The bottom of the tank is inclined at 5° towards the rear end of the base. The end is provided with a second oil guide port 20 and flows into the oil collection box through a branch hose to realize the recycling of lubricating oil in the whole area.

[0061] like Figure 4 As shown, the lifting device is a forged steel component including a connecting block 101 and a lifting ring 102, which is fixed to the connecting seats 16 on both sides of the chip removal groove by M20 bolts. During lifting, the horizontal deviation of the base is ≤0.5mm / m to ensure stable installation.

[0062] The switching process between front and rear chip removal is as follows:

[0063] 1. Switching from front-end chip removal to back-end chip removal

[0064] Step 1: Shut down the machine tool, remove the motor and reducer on the first flange face 11, loosen the key connection between the screw and the motor, and pull the screw out of the chip removal groove 3 (two people are required to cooperate to prevent the screw from bending).

[0065] Step 2: Reverse the screw and insert it into the chip removal groove, align the drive end with the second flange face 13, reinstall the motor and reducer (ensure coaxiality ≤0.1mm), install the protective cover and rubber baffle at the motor position, and then connect the power cord;

[0066] Step 3: Install the first chip guide tube 5 and the second chip guide tube 6 at the second chip discharge port 14, apply sealant evenly at the flange connection, and adjust the tilt angle to 30°.

[0067] Step 4: Move the waste conveyor 2 to below the outlet of the rear chip guide pipe, install a chip baffle, and complete the switching.

[0068] 2. Switching from back-end chip removal to front-end chip removal

[0069] Perform the above steps in reverse order, remove the chip guide pipe and the rear protective cover, move the motor to the first flange face 11, reset the conveyor to the front end, and clean the residual waste chips in the chip discharge trough (it is recommended to use a high-pressure water gun to rinse).

[0070] An application example is provided in a new energy vehicle motor housing processing workshop, showing that the base can flexibly switch between front and rear chip removal, solving the problem of limited workshop layout. The aluminum chip accumulation rate has been reduced from 15% of traditional machine tools to 3%, the processing accuracy and stability have been improved by 20%, and the overall equipment efficiency has been increased by 15%.

[0071] In summary, this base achieves interchangeability of front and rear chip removal functions through modular design, balancing efficient chip removal with space adaptability. It is especially suitable for high-volume, high-cleanliness processing scenarios such as new energy vehicle parts, and can significantly improve workshop layout flexibility and production efficiency.

[0072] 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 machine bed with interchangeable front and rear chip removal, comprising a bed (1) and a chip conveyor (2), characterized in that, The upper surface of the base (1) is provided with multiple chip removal grooves (3) evenly distributed along the length of the base (1), and each chip removal groove (3) is equipped with a screw chip removal mechanism (4) that discharges waste chips outward. One end of the chip removal groove (3) extends to the front end of the base (1) and is equipped with a first flange face (11). A first chip removal port (12) is provided on the first flange face (11). The other end of the chip removal groove (3) extends to the rear end of the base (1) and is equipped with a second flange face (13). A second chip removal port (14) is provided on the second flange face (13). The drive end of the screw chip removal mechanism (4) is installed on the first flange face (11) or the second flange face (13), and the conveying part of the waste chip conveyor (2) is located below the first chip discharge port (12) or the second chip discharge port (14) to realize the interchangeability of the front chip discharge.

2. A machine bed according to claim 1, characterized in that, When switching to rear-end chip discharge, a chip guide pipe connected to the second chip discharge port (14) is installed on the second flange face (13), and the open end of the chip guide pipe extends above the conveying section of the waste chip conveyor (2).

3. A machine bed according to claim 2, characterized in that There are four chip discharge troughs (3) and they are evenly spaced. The second chip discharge port (14) at the rear end of the two chip discharge troughs (3) in the middle transmits the waste chips to the conveying part of the waste chip conveyor (2) through the second chip guide pipe (6). The second chip discharge port (14) at the rear end of the chip discharge troughs (3) on the left and right sides transmits the waste chips to the conveying part of the waste chip conveyor (2) through the first chip guide pipe (5).

4. The machine bed according to claim 2, wherein, One end of the chip guide tube is fixed to the second flange face (13) through a flange connector, and the other end of the chip guide tube is inclined downward to the conveying section of the waste chip conveyor (2).

5. The machine bed according to claim 1, wherein, The base (1) is equipped with a barrier (7) on the outside. Both sides of the inner wall of the barrier (7) are equipped with chip guide plates (8). The end of the chip guide plate (8) away from the barrier (7) is inclined downward and extends to the opening above the adjacent chip discharge groove (3).

6. A machine bed according to claim 5, characterized in that The chip guide plate (8) has a chip removal area (9) on the side near the chip removal groove (3) at the front end; When switching to front-end chip removal, the chip removal area (9) is located above the conveying section of the waste chip conveyor (2); When switching to rear-end chip removal, the drive end of the screw chip removal mechanism (4) is located below the chip removal area (9), and a protective cover and partition are installed on the outside of the drive end of the screw chip removal mechanism (4). The waste chips and cutting fluid are introduced into the chip removal groove (3) through the partition.

7. The machine bed according to claim 1, wherein, The upper surface of the base (1) is equipped with symmetrically distributed lifting devices (10), and the inner walls of both sides of the chip removal groove (3) are equipped with connecting seats (16) corresponding to the bottom sides of the lifting device (10). The bottom of the lifting device (10) is locked and fixed to the connecting seats (16) by bolts.

8. A machine bed according to any one of claims 1 to 7, characterized in that The upper surface of the base (1) is equipped with guide rails (15) located on both sides of the opening of the chip removal groove (3), and a saddle (21) is slidably mounted on multiple guide rails (15).

9. A machine bed according to claim 8, characterized in that, Two guide rails (15) are arranged opposite to each other between two adjacent chip removal grooves (3), thereby forming a first oil collection groove (17) on the upper surface of the base (1). The bottom surface of the first oil collection groove (17) is an inclined surface, and the lower end of the inclined surface faces the rear end of the base (1) and has a first oil guide port (18). An oil receiving box is provided at the outlet of the first oil guide port (18).

10. The machine bed according to claim 8, wherein, The second oil collecting groove (19) is formed between the two sides of the upper end surface of the base (1) and the adjacent guide rails (15), the groove bottom surface of the second oil collecting groove (19) is a slope, and the lower end of the slope faces the rear end of the base (1) and has a second oil outlet (20).

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