TWM648550U - Horizontal lathe suitable for large diameter workpiece - Google Patents

Abstract

This new type of horizontal lathe is suitable for large-diameter workpieces. It includes a main bed, an auxiliary bed and a plurality of assembly components. The main bed can fix the workpiece, and the auxiliary bed is equipped with linear guide rails. The two are independent components and can be assembled The assembly includes first and second assembly parts, a coupling part and a spacing compensation plate. The first and second assembly parts can be fixed on the main bed platform and the auxiliary bed platform respectively. The coupling part can combine the spacing compensation plate, the first and second spacing compensation plates. Assembling components, the spacing compensation plate is clamped between the first and second assembling components, and the spacing compensation plates of the plurality of assembling components are used to fill the gap required for correction between the first and second assembling components; the main method of the present invention is The bed base and auxiliary bed base are independent components, which can be used for large-diameter workpieces without interference. They are assembled with assembly components to achieve good assembly and processing accuracy.

Description

Horizontal lathe suitable for large diameter workpieces

The present invention relates to lathes, in particular to a horizontal lathe suitable for large-diameter workpieces.

The bed of an existing lathe generally includes a main rail and a auxiliary rail that are spaced apart. The main rail corresponds to the workpiece. Specifically, one end of the main rail can be provided with a headstock, and the main rail can be provided with a tailstock that can move along the main rail. , use the headstock and tailstock to clamp the workpiece; a processing device is installed on the auxiliary track to process the workpiece on the main track.

In order to ensure machining accuracy, the existing lathe's bed is usually formed in one piece to ensure that the main rail and auxiliary rails on the bed are parallel to each other. However, if workpieces with larger diameters need to be processed, due to the main rail and auxiliary rails of the bed The system is integrally formed, and the distance between the two is fixed. There may be interference between the workpiece on the main track and the processing device on the auxiliary track.

In addition, if a large, one-piece machine is designed based on the size of the workpiece, it cannot be transported in a container, and transportation after the machine leaves the factory will be difficult and costly.

In order to solve the problem that existing lathes may cause interference when processing workpieces with larger diameters, and the scope of application is limited, the purpose of this new model is to propose a method that can avoid interference with workpieces with larger diameters and has good processing capabilities. Horizontal lathes with high precision are suitable for large-diameter workpieces.

This new type of horizontal lathe proposed to solve technical problems and suitable for large-diameter workpieces includes: A main bed, which can install and fix a workpiece, and the workpiece has an extension direction; A pair of bed platforms, which are independent structures from the main bed platform and are arranged at intervals, and are provided with a linear guide rail; A processing device that can move along the linear guide and can process the workpiece; and A plurality of assembly components, the plurality of assembly components are spaced between the main bed platform and the auxiliary bed platform, each of the assembly components includes A first assembly that can be fixed to the main bed platform; a second assembly that can be fixed to the auxiliary bed; a spacing compensation plate; and A combining member that can combine the first assembly, the spacing compensation plate and the second assembly, so that the spacing compensation plate is clamped between the first assembly and the second assembly, thereby making the The linear guide is parallel to the extension direction of the workpiece.

The horizontal lathe suitable for large-diameter workpieces, wherein the distance compensation plate includes a notch, the notch is recessed from the bottom end of the distance compensation plate toward the top of the distance compensation plate, and the distance compensation plate can By moving relative to the coupling member, the coupling member enters the groove from the opening of the groove and presses against the bottom of the groove.

The horizontal lathe suitable for large-diameter workpieces, wherein the second assembly includes a notch that is recessed from the top of the second assembly toward the bottom of the second assembly, and the coupling member can The top of the second assembly is inserted into the notch and is located at the bottom of the notch.

The horizontal lathe suitable for large-diameter workpieces, wherein each of the assembly components includes a positioning component that can move through one of the first assembly component and the second assembly component and the distance It compensates for the lack of the plate and can abut against the other one of the first assembly part and the second assembly part.

The horizontal lathe suitable for large-diameter workpieces, wherein each of the assembly components includes a positioning member that can movably penetrate one of the first assembly member and the second assembly member, and can against the other one of the first assembly part and the second assembly part.

The horizontal lathe suitable for large-diameter workpieces includes an end assembly component, which includes a first assembly component, a second assembly component, and a spacing compensation plate. The first assembly component and the The second assembly part can be fixed to the main bed base and the auxiliary bed base respectively, and the first assembly part, the distance compensation plate and the second assembly part can be combined so that the distance compensation plate is clamped on the first Between the assembly part and the second assembly part, the second assembly part is provided with a positioning recess, and one end of the auxiliary bed can abut against the positioning recess.

The horizontal lathe suitable for large-diameter workpieces, wherein the processing device includes a column, a ram bearing, and a ram assembly. The column extends upright from the linear guide rail, and the ram bearing is located on the The upright column can move along an extension direction of the upright column. The ram assembly is located on the ram support seat and can move relative to the ram support seat to be closer to or away from the workpiece installed and fixed on the main bed platform.

The horizontal lathe suitable for large-diameter workpieces, wherein the ram assembly includes two opposite sides, and at least one guide rail and a plurality of plane bearings are provided between the ram assembly and the ram bearing, so The guide rail includes a track bar and at least one slide block. The slide block can move relatively along the track bar and fits concavely and convexly with the track bar. The slide block and the track bar are respectively fixed on the ram bearing. And the ram assembly, each of the plane bearings is in a strip shape, and the plurality of plane bearings and the guide rails are respectively arranged on both sides of the ram assembly.

In the horizontal lathe suitable for large-diameter workpieces, the guide rail is arranged on an inner vertical surface of the ram bearing.

The efficiency improvements that can be obtained by this new technical means are: 1. Compared with the existing lathe, the main track and the auxiliary track of the bed are integrally formed, which makes it easy for the workpiece to interfere. In this model, the main bed that fixes the workpiece and the auxiliary bed that is equipped with the processing device are independent components. Spaced apart, through the spacing compensation plates of the plurality of assembly components, the extension direction of the workpiece is corrected to be parallel to the linear guide during assembly, thereby providing a workpiece that can process larger diameter workpieces with good assembly and processing accuracy. Horizontal lathe suitable for large diameter workpieces. 2. This new type of horizontal lathe is suitable for large-diameter workpieces. The plurality of assembly components are used to assemble and combine the main bed base and the auxiliary bed base, which are independent components. The plurality of assembly components can be disassembled before leaving the factory. When the main bed platform and the auxiliary bed platform are opened, the main bed platform and the auxiliary bed platform are first separated for transportation, which takes up less transportation space and improves the convenience of transportation. Since the distance compensation plate of the plurality of assembly components for correction is included, the space to be transported is When assembled and combined after being delivered to the customer, good assembly accuracy can still be maintained. The assembled horizontal lathe has good machining accuracy.

In order to understand the technical characteristics and practical effects of the present invention in detail, and to realize it according to the content of the new model, the preferred embodiment as shown in the drawings is further described in detail as follows:

As shown in FIGS. 1 to 3 , a horizontal lathe suitable for large-diameter workpieces according to the preferred embodiment of the present invention includes a main bed 10 , a auxiliary bed 20 , a processing device 30 and a plurality of assembly components 40 , the main bed platform 10 and the auxiliary bed platform 20 are independent structures and are arranged at intervals. As shown in Figure 2, the plurality of assembly components 40 are arranged at intervals between the main bed platform 10 and the auxiliary bed platform. 20 for assembling and combining the main bed platform 10 and the auxiliary bed platform 20 .

As shown in FIGS. 1 and 2 , the main bed 10 is elongated, capable of mounting and fixing a workpiece, and the workpiece has an extending direction. Specifically, the main bed 10 has two opposite ends, and A main rail extends toward both ends of the main bed 10. One end of the main rail is provided with a clamping assembly 11 (or headstock). The main rail is usually also provided with a tailstock (not shown). The tailstock can move along the main rail away from or close to the clamping assembly 11, so that workpieces of different lengths can be fixedly installed between the clamping assembly 11 and the tailstock. That is to say, the extension direction of the workpiece is the direction of the clamping assembly 11. The extension direction of the main rail; in addition, other mechanisms to assist in supporting the workpiece can also be installed on the main rail.

As shown in FIGS. 1 and 2 , the auxiliary bed 20 is elongated and is provided with a linear guide rail 21 extending toward the opposite ends of the auxiliary bed 20 . The processing device 30 is located on the auxiliary bed 20 . On the auxiliary bed 20, and can move linearly along the linear guide rail 21, so as to process different positions of the workpiece. The detailed structure of the processing device 30 will be described in detail later; as shown in Figures 2 and 3, As mentioned above, the main bed 10 and the auxiliary bed 20 are independent structures, which are manufactured and formed separately, and then assembled and combined through the plurality of assembly components 40 .

As shown in FIGS. 3 to 5 , each assembly component 40 includes a first assembly component 41 , a second assembly component 42 , a spacing compensation plate 43 and a coupling component 44 . The first assembly component 41 can be fixed on the The main bed 10 and the second assembly 42 can be fixed to the auxiliary bed 20. The first assembly 41 and the second assembly 42 can be fixed by thread locking, but this is not the case. limit; the combining member 44 can combine the first assembly 41, the spacing compensation plate 43 and the second assembly 42, so that the spacing compensation plate 43 is clamped between the first assembly 41 and the second assembly. 42, in the preferred embodiment of the present invention, the coupling member 44 is a combination of a screw rod and a nut. As shown in Figure 6, the screw rod of the coupling member 44 passes through the second assembly in sequence. 42. The distance compensation plate 43 is screwed with the first assembly 41 and the nut, thereby relatively fixing the above three.

In other embodiments, the screw of the coupling member 44 can also be arranged in the opposite direction, so that it can pass through the first assembly 41 , the spacing compensation plate 43 and the second assembly 42 in order and then be connected with the nut. screw, or the coupling member 44 may only include the screw, which passes through the second assembly 42 and the spacing compensation plate 43 and then screws into the screw hole on the first assembly 41, as long as it can be combined with the screw. The form of the first assembly 41, the spacing compensation plate 43 and the second assembly 42, and the combination 44 are not limited by the preferred embodiment of the present invention. In addition, in the preferred embodiment of the present invention, the combination Gaskets are provided between the screw of the member 44 and the second assembly member 42 and between the nut of the coupling member 44 and the first assembly member 41 to reduce wear.

By the distance compensation plate 43 being clamped between the first assembly 41 and the second assembly 42, the assembly tolerance of the main bed 10 and the auxiliary bed 20 can be corrected, so that the linear guide rail 21 and the auxiliary bed 20 can be corrected. The extension direction of the workpiece, that is, the main rail of the main bed 10 is parallel to achieve better assembly accuracy and improve the processing accuracy of the horizontal lathe. The specific method is as follows.

The present invention uses the spacing compensation plates 43 of the plurality of assembly components 40. Before the horizontal lathe of the present type leaves the factory, the main bed 10 and the auxiliary bed 20 are pre-assembled, and the plurality of assemblies are arranged at intervals. The first assembly 41 and the second assembly 42 of the assembly 40 combine each section of the main bed 10 between the two ends with the auxiliary bed 20, and connect the main rail of the main bed 10 with the auxiliary bed 20. The parallelism between the linear guide rails 21 of the auxiliary bed 20 is measured; then, the distance between the first assembly 41 and the second assembly 42 of each assembly 40 is adjusted according to the measurement results, that is, the main bed is adjusted. The distance between each segment of the table 10 and the auxiliary bed table 20 is adjusted to correct the main rail and the linear guide rail 21 to be parallel. After the correction is completed, adjust the first assembly part 41 and the second assembly part 41 of each assembly assembly 40 according to the adjustment. The size of the distance between the two assemblies 42 is determined by designing or processing the corresponding thickness dimension of the distance compensation plate 43 .

Through the above method, during assembly and fixation, the distance compensation plate 43 is clamped between the corresponding first assembly part 41 and the second assembly part 42, thereby filling the first assembly gap of each assembly component 40. The distance between the component 41 and the second assembly component 42 is corrected to be parallel. Therefore, after the plurality of assembly components 40 completes assembling the main bed base 10 and the auxiliary bed base 20, the main bed can be The main rail of the table 10 and the linear guide rail 21 of the auxiliary bed 20 are directly parallel, so that the main bed 10 and the auxiliary bed 20 have good assembly accuracy, and the new horizontal lathe has good processing accuracy after assembly.

Compared with the existing lathe, the main track and the auxiliary track included in the bed are integrally formed. When processing workpieces with larger diameters, interference is easy to occur. In this new model, the main bed 10 for fixing the workpiece and the auxiliary track where the processing device 30 is installed are included. The bed base 20 is set up independently. During assembly, the distance compensation plates 43 of the plurality of assembly components 40 are used to correct the extension direction of the workpiece, that is, the main rail of the main bed base 10 and the linear guide rail of the auxiliary bed base 20 21 are directly parallel after assembly, thereby providing a horizontal lathe suitable for large-diameter workpieces that can process larger-diameter workpieces and has good assembly and processing accuracy.

In addition, the present invention is suitable for horizontal lathes with large-diameter workpieces. Since the plurality of assembly components 40 are used to assemble and combine the independent main bed 10 and the auxiliary bed 20, the main bed can be assembled before leaving the factory. The table 10 and the auxiliary bed table 20 are first disassembled for transportation, which occupies less space and improves the convenience of transportation. Since the distance compensation plates 43 of the plurality of assembly components 40 for correction are included, they are to be transported to the client. Good assembly accuracy can still be maintained after reassembly and combination. The new horizontal lathe has good processing accuracy after assembly.

The horizontal lathe of the present invention uses the spacing compensation plates 43 of the plurality of assembly components 40 to fill the gap adjusted by the corresponding correction between the first assembly component 41 and the second assembly component 42. The manufacturing tolerances of the first assembly 41 and the second assembly 42 are corrected. Specifically, since the distance compensation plate 43 is a plate body, it is relatively easy to design, manufacture and process. The distance compensation plate 43 even It can be a plate body of unequal thickness, which is pre-assembled and measured and then continuously corrected. The manufacturing tolerances and assembly tolerances of the main bed 10 and the auxiliary bed 20 as well as the first assembly 41 and all the components can be corrected at the same time. The manufacturing tolerance of the second assembly 42 enables the horizontal lathe of the present invention to have excellent machining accuracy.

As shown in FIGS. 5 and 7 , in the preferred embodiment of the present invention, the pitch compensation plate 43 further includes a notch 431 , the notch 431 extends from the bottom end of the pitch compensation plate 43 toward the top of the pitch compensation plate 43 . The top end is concave, and the distance compensation plate 43 can move relative to the coupling member 44, so that the coupling member 44 enters the groove 431 from the opening of the groove 431 and abuts the bottom of the groove 431, passing through the groove 431. Groove 431, the distance compensation plate 43 can be easily inserted between the first assembly 41 and the second assembly 42 or taken out. Specifically, after the distance compensation plate 43 is inserted and measured again, , when correction is still needed, the coupling member 44 only needs to be loosened slightly to pull up the distance compensation plate 43. After redesign or reprocessing, the new distance compensation plate 43 can be quickly placed into the first between the assembly 41 and the second assembly 42, thereby increasing the convenience and efficiency of the calibration test process.

As shown in FIGS. 5 and 7 , in the preferred embodiment of the present invention, the second assembly 42 includes a notch 421 , which extends from the top of the second assembly 42 toward the bottom of the second assembly 42 . The end is recessed. During assembly, the coupling member 44 can be inserted into the notch 421 from the top of the second assembly member 42 and positioned at the bottom of the notch 421. The screw of the coupling member 44 can be directly inserted through the notch 421. , which is more convenient to operate.

In addition, the preferred embodiment of the present invention uses the notch 421 of the second assembly 42 and the notch 431 of the spacing compensation plate 43 to combine the first assembly 41, the spacing compensation plate 43 and the third spacing compensation plate 43 at the coupling part 44. After the second assembly 42 is assembled, the screw of the coupling member 44 is located at the bottom of the notch 421 and presses upward against the bottom of the notch 431 to fix the distance compensation plate 43 relative to the first assembly 41 and the third assembly. The height position of the second assembly 42 provides a positioning effect, making the correction of the distance compensation by the distance compensation plate 43 more accurate.

As shown in Figures 5 and 7, in the preferred embodiment of the present invention, each assembly component 40 also includes a positioning member 45. The positioning member 45 is a screw that passes through the first assembly member 41. A screw hole is provided and is against the second assembly part 42. The positioning part 45 is spaced apart from the coupling part 44. During the pre-assembly process, the adjuster twists the screw rod and nut of the coupling part 44. To adjust the distance between the first assembly part 41 and the second assembly part 42 of each assembly assembly 40, at this time, by twisting the positioning part 45, the positioning part 45 passing through the first assembly part 41 is pressed against the The second assembly part 42 is positioned to prevent the first assembly part 41 from being offset from the second assembly part 42, and the adjuster can also adjust the first assembly part 41 based on the distance of twisting the positioning part 45. The distance between the second assembly part 42 and the second assembly part 42 can be calculated, for example, by adjusting the number of turns of the positioning part 45 to match the size of the positioning part 45, or by marking the positioning part 45 for measurement. This design and processing adjust the size of the spacing compensation plate 43 .

In the preferred embodiment of the present invention, the positioning member 45 penetrates the first assembly member 41 and abuts against the second assembly member 42. In other embodiments, the positioning member 45 can also penetrate the second assembly member 42. The assembly part 42 is against the first assembly part 41 and can also position and assist in the design of the distance compensation when adjusting the distance between the first assembly part 41 and the second assembly part 42 during the pre-assembly process. Depending on the size of the plate 43, the arrangement form of the positioning member 45 is not limited to the preferred embodiment of the present invention.

As shown in Figures 3, 8 and 9, in the preferred embodiment of the present invention, the horizontal lathe further includes an end assembly assembly 40A. The end assembly assembly 40A is basically the same as the assembly assembly 40 and includes the first assembly assembly 40A. An assembly part 41A, the second assembly part 42A, the spacing compensation plate 43A, the coupling part 44A and the positioning part 45A, wherein the coupling part 44A is only a screw, which passes through the first assembly part 41A in sequence The combination hole 411 and the notch 431 of the distance compensation plate 43A are screwed into a combination screw hole 423 of the second assembly 42A; the main difference between the end assembly assembly 40A and the assembly assembly 40 is that, The second assembly 42A is also formed with a positioning recess 422, which is L-shaped. After the second assembly 42A is fixed on the auxiliary bed 20, as shown in Figures 3 and 6, the auxiliary bed 20 A corner of one end of the auxiliary bed 20 that is relatively close to the main bed 10 will abut against the L-shaped positioning recess 422 to position the auxiliary bed 20 and its linear guide 21 relative to the main bed 10. Set the end point of the horizontal lathe's processing stroke.

As shown in Figures 10 to 13, in the preferred embodiment of the present invention, the movement on the three linear coordinate axes of the horizontal lathe is completed by the processing device 30. Specifically, the processing device 30 includes a saddle 31. A column 32, a ram bearing 33 and a ram assembly 34. As shown in Figure 10, the saddle 31 is installed on the linear guide rail 21 of the auxiliary bed 20, so that the processing device 30 can move along the The linear guide 21 moves in the length direction of the workpiece (arrow in Figure 10), which is movement on one of the linear coordinate axes (defined as the X-axis).

As shown in FIGS. 10 and 11 , the upright column 32 extends upright from the saddle 31 and is hollow. As the main structure of the processing device 30 , the upright column 32 is located on opposite sides of the main bed 10 and close to the main bed 10 respectively. Both are provided with two parallel slide rail bars 321, which extend toward the top and bottom of the column 32. The ram bearing 33 penetrates the hollow of the column 32 and protrudes from the opposite side of the column 32. On both sides, each slide rail bar 321 has a corresponding slide block group. Each slide block group includes a plurality of slide rail slide blocks 331. The slide rail slide blocks 331 are fixed on the ram bearing seat 33 and are located on On the corresponding slide rail bar 321, the ram support 33 can move along the slide rail bar 321 in the extending direction of the column 32 with the slide rail slide block 331 (as shown in Figure 11 Arrow), this is the movement on another linear coordinate axis (defined as Y axis).

As shown in Figures 12 and 13, the ram assembly 34 is surrounded by the ram bearing 33, and a plurality of planar bearings 35 and two guide rails 36 are arranged between them. Each of the planar bearings 35 is in the form of a long strip. Each guide rail 36 includes a track bar 37 and at least one slide block 38. The ram assembly 34 includes two opposite sides. The plurality of plane bearings 35 and the two guide rails 36 are respectively provided on the ram assembly 34. On both sides, the plurality of planar bearings 35 are fixed on the ram bearing 33 , the track bar 37 and the slide block 38 are arranged horizontally, and the track bar 37 is fixed on one side of the ram assembly 34 side, the slider 38 is fixed to an inner vertical surface of the ram support 33; in other embodiments, the slider 38 can also be fixed to the ram assembly 34, and the track bar 37 can be fixed to The ram bearing 33.

The slider 38 has a concave-convex fit with the track bar 37. Specifically, the slider 38 has a groove, and the cross-section of the space in the groove is the same as the cross-section of the track bar 37. The slider 38 can be fitted with the track bar 37 and can move relatively along the track bar 37; when the ram assembly 34 linearly moves relative to the ram bearing 33 through the guide rail 36, it will simultaneously move against the The plane bearing 35 moves (arrow in Figure 13), so that the tool 341 at one end of the ram assembly 34 is close to or away from the workpiece on the main bed 10. This is the last linear coordinate axis (defined as the Z axis) The elongated planar bearing 35 is specifically a planar needle roller bearing (shown schematically as a long block in Figures 12 and 13) to provide the ram assembly 34 with smoothness and friction. Linear movement with low force.

Compared with using the flat bearings 35 on both sides of the ram assembly 34 to cooperate with the ram bearing 33, the preferred embodiment of the present invention only uses the flat bearings on one side of the ram assembly 34. The bearing 35 adopts a shape-matching and rigid guide rail 36 on the other side of the ram assembly 34, whereby the linear movement of the ram assembly 34 relative to the ram bearing 33 will not produce other straight lines. The offset on the coordinate axis can provide better machining accuracy.

The above are only preferred embodiments of the present invention and are not intended to limit the present invention in any form. Anyone with ordinary knowledge in the technical field may use the present invention without departing from the scope of the technical solutions proposed by the present invention. Equivalent embodiments with partial changes or modifications to the technical content disclosed in the new model, and which do not deviate from the technical solution content of the present new model, still fall within the scope of the technical solution of the present new model.

10:Main bed platform 11: Clamping component 20: Auxiliary bed platform 21:Linear guide rail 30:Processing device 31: saddle 32:Pillar 321:Slide rail 33: Ram bearing 331:Slide rail slider 34: Ram assembly 341: Knives 35:Plane bearing 36: Guide rail 37:Track strip 38: Slider 40:Assemble components 40A: End assembly assembly 41,41A: First assembly 411: Binding hole 42,42A: Second assembly 421: Gap 422: Positioning recess 423: Combined screw hole 43: Spacing compensation plate 431: missing slot 44,44A:Combining parts 45,45A: Positioning piece

Figure 1 is a three-dimensional appearance view of the preferred embodiment of the present invention. Figure 2 is a top view of the preferred embodiment of the present invention. Figure 3 is a partial three-dimensional appearance view of the preferred embodiment of the present invention. Figure 4 is a three-dimensional appearance view of the assembly assembly of the preferred embodiment of the present invention. Figure 5 is an exploded view of the assembly assembly of the preferred embodiment of the present invention. Figure 6 is a partial top view of the preferred embodiment of the present invention. Figure 7 is a cross-sectional view along the A-A secant line of Figure 6. Figure 8 is a three-dimensional appearance view of the end assembly assembly of the preferred embodiment of the present invention. Figure 9 is an exploded view of the end assembly assembly of the preferred embodiment of the present invention. Figure 10 is a three-dimensional appearance view of the processing device according to the preferred embodiment of the present invention. Figure 11 is a side view of the processing device according to the preferred embodiment of the present invention. Fig. 12 is a cross-sectional view along the B-B secant line of Fig. 11. Fig. 13 is a cross-sectional view along the C-C secant line of Fig. 12.

10:Main bed platform

20: Auxiliary bed platform

21:Linear guide rail

40:Assemble components

40A: End assembly assembly

41,41A: First assembly

42,42A: Second assembly

Claims (9)

A horizontal lathe suitable for large-diameter workpieces, which includes: A main bed, which can install and fix a workpiece, and the workpiece has an extension direction; A pair of bed platforms, which are independent structures from the main bed platform and are arranged at intervals, and are provided with a linear guide rail; A processing device that can move along the linear guide and can process the workpiece; and A plurality of assembly components, the plurality of assembly components are spaced between the main bed platform and the auxiliary bed platform, each of the assembly components includes A first assembly that can be fixed to the main bed platform; a second assembly that can be fixed to the auxiliary bed; a spacing compensation plate; and A combining member that can combine the first assembly, the spacing compensation plate and the second assembly, so that the spacing compensation plate is clamped between the first assembly and the second assembly, thereby making the The linear guide is parallel to the extension direction of the workpiece. The horizontal lathe suitable for large-diameter workpieces as described in claim 1, wherein the distance compensation plate includes a notch that is recessed from the bottom end of the distance compensation plate toward the top end of the distance compensation plate, and the notch is recessed from the bottom end of the distance compensation plate toward the top end of the distance compensation plate. The spacing compensation plate can move relative to the coupling member so that the coupling member enters the groove from the opening of the groove and presses against the bottom of the groove. The horizontal lathe suitable for large-diameter workpieces as described in claim 2, wherein the second assembly includes a notch that is recessed from the top of the second assembly toward the bottom of the second assembly, The coupling component can be inserted into the gap from the top of the second assembly component and positioned at the bottom of the gap. The horizontal lathe suitable for large-diameter workpieces as described in claim 2, wherein each of the assembly components includes a positioning component that can movably penetrate one of the first assembly component and the second assembly component. and the gap of the spacing compensation plate, and can abut the other one of the first assembly and the second assembly. The horizontal lathe suitable for large-diameter workpieces as claimed in claim 1, wherein each of the assembly components includes a positioning member that can movably penetrate one of the first assembly member and the second assembly member. and can abut the other one of the first assembly part and the second assembly part. The horizontal lathe suitable for large-diameter workpieces as described in any one of claims 1 to 5, which includes an end assembly component, the end assembly component includes a first assembly component, a second assembly component and a spacing Compensation plate, the first assembly and the second assembly can be fixed to the main bed and the auxiliary bed respectively, and the first assembly, the distance compensation plate and the second assembly can be combined to make the The distance compensation plate is clamped between the first assembly part and the second assembly part. The second assembly part is provided with a positioning recess, and one end of the auxiliary bed can abut against the positioning recess. The horizontal lathe suitable for large-diameter workpieces as described in any one of claims 1 to 5, wherein the processing device includes a column, a ram support, and a ram assembly, and the column is upright from the linear guide rail. Extend, the ram bearing is provided on the upright and can move along an extension direction of the upright. The ram assembly is provided on the ram bearing and can move closer to or away from the ram bearing relative to the ram bearing. The fixed workpiece installed on the main bed platform. The horizontal lathe suitable for large-diameter workpieces as described in claim 7, wherein the ram assembly includes two opposite sides, and at least one guide rail and a plurality of guide rails are provided between the ram assembly and the ram bearing. Plane bearing, the guide rail includes a track bar and at least one slide block. The slide block can move relatively along the track bar and is in concave-convex fit with the track bar. The slide block and the track bar are respectively fixed on the track bar. Each of the ram bearings and the ram assembly has a long strip shape, and the plurality of plane bearings and the guide rails are respectively located on both sides of the ram assembly. The horizontal lathe suitable for large-diameter workpieces as described in claim 8, wherein the guide rail is provided on an inner vertical surface of the ram bearing.