A guide rail machining device

Abstract

The present application relates to guide rail production equipment technical field, provide a kind of guide rail machining device, comprising: base;At least one machining component, is set on the base;The machining component includes: base, is located on the base, the top of the base is equipped with clamp unit, for clamping guide rail, the clamp unit includes clamping seat, fixed clamp block and movable clamp blockThe present application overcomes the deficiencies of prior art, design is reasonable, compact structure, the present application utilizes incomplete gear as conveying drive and clamping linkage power source simultaneously, by setting sector push block in its shaft portion, and cooperate with pusher and clamp, realizes guide rail step conveying and clamp clamping, loosening action Full mechanical automatic alternation.Two machining components are sequentially equipped with drilling and polishing device, constitute continuous flow operation, guide rail only needs to be loaded once, and drilling and hole end polishing process can be automatically completed, significantly reduces the clamping frequency, effectively improves processing efficiency and product consistency.

Description

Technical Field

[0001] This invention relates to the field of guide rail production equipment technology, and more specifically to a guide rail machining device. Background Technology

[0002] Guide rails, as long, strip-shaped guiding components widely used in CNC machine tools, automated production lines, and precision measuring instruments, are key fundamental components ensuring the high-precision and high-rigidity operation of moving parts along a specified trajectory. To meet the requirements of installation, lubrication, and connection, guide rails typically require multiple precisely spaced mounting holes or through holes to be machined along their length during manufacturing. After drilling, sharp burrs, flash, or micro-cracks often remain at the hole edges. These defects not only affect the assembly accuracy and fit of the guide rail but may also become the source of fatigue failure due to stress concentration during subsequent use. Therefore, after drilling, the hole ends must usually be ground to remove burrs, smooth the hole edges, and improve their mechanical properties.

[0003] Currently, most of the above-mentioned processing of guide rails adopts a single-machine step-by-step operation method, that is, using independent drilling and grinding equipment to process the guide rails one after another. The processing requires multiple handling and clamping of the guide rails, which is not only cumbersome and labor-intensive, but also the cumulative error caused by multiple repositioning will significantly affect the processing accuracy and consistency of the guide rails. Therefore, we propose a guide rail machining device. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the present invention provides a guide rail machining device, which overcomes the shortcomings of the prior art, has a reasonable design and compact structure, and solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a guide rail machining apparatus, comprising:

[0006] Base;

[0007] At least one machined component is disposed on the base;

[0008] The machining components include:

[0009] A base is provided on the base, and a clamping unit is provided on the top of the base for clamping the guide rail. The clamping unit includes a clamping seat, a fixed clamping block and a movable clamping block. The fixed clamping block is fixed on the clamping seat, and the movable clamping block is arranged opposite to the fixed clamping block. A push rod is connected to the side of the movable clamping block away from the fixed clamping block. The push rod passes through the clamping seat, and a first spring is sleeved on the push rod. The two ends of the first spring abut against the push rod and the clamping seat respectively.

[0010] A machining unit, disposed on the base, is used to machine the guide rail held by the fixture unit;

[0011] At least one conveying component is disposed on the base;

[0012] The conveying assembly includes:

[0013] The mounting base is fixedly installed on the base;

[0014] A drive wheel assembly, located on top of the fixed base, is used to drive the guide rail to move. The drive wheel assembly includes a fixed guide wheel, a moving guide wheel, a drive gear, and an incomplete gear. The fixed guide wheel and the moving guide wheel are arranged opposite to each other. The drive gear is coaxially fixed to the top of the moving guide wheel, and the incomplete gear meshes with the drive gear.

[0015] The linkage component includes a pusher frame and a sector-shaped pusher block. The sector-shaped pusher block is fixedly sleeved on the shaft of the incomplete gear. The pusher frame has a frame portion in the middle, which is sleeved on the outside of the sector-shaped pusher block. The pusher frame has an extension arm on the outside, and the end of the extension arm abuts against the end of the push rod away from the moving clamp block.

[0016] The teeth of the incomplete gear are misaligned with the protrusion of the sector pusher, so that when the incomplete gear drives the drive gear to rotate, the sector pusher releases its support to the inner wall of the frame.

[0017] Preferably, the top of the base is provided with two parallel first guide rails, and the base is slidably disposed on the two first guide rails; a first lead screw is rotatably connected to the base, the first lead screw is parallel to the first guide rails, and the first lead screw is threadedly connected to the bottom of the base.

[0018] Preferably, the top of the base is provided with two parallel second guide rails, the machining unit includes a sliding seat and a machining device, the machining device is mounted on the sliding seat, the sliding seat is slidably disposed on the two second guide rails, a second lead screw is rotatably connected to the base, the second lead screw is arranged parallel to the second guide rails, and the second lead screw is threadedly connected to the bottom of the sliding seat.

[0019] Preferably, the base is provided with two machining components, and the machining devices of the two machining components are a drilling device and a grinding device, respectively.

[0020] Preferably, the push rod has an adjusting cap on the side opposite to the moving clamp block, and the adjusting cap has a strip groove on both sides along the length of the push rod. The outer wall of the push rod is symmetrically provided with screws that are inserted into the strip grooves, and the outer wall of each screw is threaded with a locking nut to lock the push rod and the adjusting cap.

[0021] Preferably, the bottom of the moving guide wheel is provided with a slider, the slider is slidably disposed on the fixed seat, and a third lead screw is rotatably connected to the fixed seat, the third lead screw being threadedly connected to the slider.

[0022] Preferably, the incomplete gear is disposed on the slider, the slider is provided with a pair of parallel guide rods, both of which pass through the extension arm, and a second spring connects the extension arm and the slider.

[0023] Preferably, the base is provided with three conveying components, which are spaced apart on the base and used to jointly convey the guide rail.

[0024] Preferably, the third lead screws of two adjacent conveying assemblies are connected by a first transmission assembly so that the third lead screws of the three conveying assemblies rotate synchronously.

[0025] Preferably, the shaft portions of two adjacent incomplete gears are connected by a second transmission assembly to enable the three incomplete gears to rotate synchronously.

[0026] This invention provides a guide rail machining apparatus. It has the following beneficial effects:

[0027] 1. This application utilizes an incomplete gear as the power source for both conveying and clamping linkage. By setting a sector-shaped pusher on its shaft and cooperating with the pusher frame and fixture, a fully mechanical automatic alternation of guide rail stepping conveying and fixture clamping and releasing actions is achieved. Each rotation of the incomplete gear automatically completes a complete work cycle of "releasing-conveying-clamping-processing," eliminating the need for independent drive components and control systems for the fixture. This significantly simplifies the overall machine structure, reduces manufacturing costs, and ensures high synchronization and reliable operation through the purely mechanical linkage method, thus guaranteeing manufacturing accuracy.

[0028] 2. The push rod end is equipped with an adjustment cap that can adjust the extension length, which can not only reliably clamp guide rails of different widths, but also easily compensate for assembly and machining errors, ensuring stable clamping and convenient adjustment.

[0029] 3. The machining components can adjust their machining position along the length of the guide rail by means of the first lead screw, and precisely control the lateral feed of the machining device by means of the second lead screw. The position adjustment is flexible and the machining accuracy is high. The two machining components are equipped with drilling and grinding devices in sequence to form a continuous flow operation. The guide rail only needs to be loaded once to automatically complete the drilling and hole end grinding processes, which significantly reduces the number of clamping times and effectively improves the processing efficiency and the consistency of finished products. Attached Figure Description

[0030] Figure 1This is a three-dimensional schematic diagram of the overall structure of the present invention;

[0031] Figure 2 This is a schematic diagram of the overall structure of the present invention from a front view.

[0032] Figure 3 This is a rear view schematic diagram of the overall structure of the present invention;

[0033] Figure 4 This is a top view of the overall structure of the present invention;

[0034] Figure 5 This is a three-dimensional schematic diagram of the drilling machining component structure of the present invention;

[0035] Figure 6 This is a three-dimensional schematic diagram of the grinding processing component structure of the present invention;

[0036] Figure 7 This is a three-dimensional schematic diagram of the adjusting cap structure of the present invention;

[0037] Figure 8 This is a three-dimensional schematic diagram of the conveying component structure of the present invention;

[0038] Figure 9 This is a three-dimensional schematic diagram of the pusher frame structure of the present invention;

[0039] Figure 10 This is a three-dimensional schematic diagram of the moving guide wheel structure of the present invention;

[0040] Figure 11 This is a three-dimensional schematic diagram of the incomplete gear structure of the present invention.

[0041] In the diagram: 1. Base; 11. First guide rail; 12. First lead screw; 21. Base; 211. Second guide rail; 221. Clamp; 222. Fixed clamping block; 223. Moving clamping block; 224. Push rod; 225. First spring; 226. Adjusting cap; 227. Strip groove; 228. Screw; 231. Sliding seat; 232. Processing device; 24. Second lead screw; 31. Fixed seat; 321. Fixed guide wheel; 322. Moving guide wheel; 323. Drive gear; 324. Incomplete gear; 33. Slider; 34. Third lead screw; 35. Guide rod; 36. Second spring; 41. Pusher frame; 411. Frame; 412. Extension arm; 42. Fan-shaped push block. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] like Figures 1 to 11 As shown, this embodiment provides a guide rail machining apparatus, including a base 1, machining components, and conveying components. Three conveying components are spaced apart on the base 1 along the conveying direction of the guide rail, used to jointly support and progressively convey the guide rail to be processed. Between each pair of adjacent conveying components, a machining component is provided, thus forming a continuous processing line. In this embodiment, the machining devices 232 equipped on the two machining components are a drilling device and a grinding device, respectively, to sequentially complete the drilling and grinding processes at the ends of the holes in the guide rail.

[0044] The base 1 has two parallel first guide rails 11 fixed to its top, extending along the guide rail conveying direction. A pair of first lead screws 12 are rotatably connected to the base 1 via bearing seats. The first lead screws 12 are positioned between the two first guide rails 11 and are parallel to them, with one end connected to a handwheel. The machining assembly includes a base 21, with a sliding block fixed to the bottom of the base 21 that slidably engages with the first guide rails 11, and a nut threadedly connected to the first lead screws 12. When the first lead screws 12 rotate, they drive the base 21 to move along the first guide rails 11 as a whole, thereby adjusting the relative position of the machining assembly along the length of the guide rails.

[0045] The top of the base 21 is provided with two parallel second guide rails 211, the extension direction of which is perpendicular to the first guide rail 11. The machining unit includes a sliding seat 231 and a machining device 232. The bottom of the sliding seat 231 is provided with a sliding block that slides with the second guide rails 211. The machining device 232 is fixed to the sliding seat 231 by bolts. A second lead screw 24 is rotatably connected to the base 21 via a bearing seat. The second lead screw 24 is arranged parallel to the second guide rails 211. A nut threadedly connected to the second lead screw 24 is fixed to the bottom of the sliding seat 231. The second lead screw 24 is driven by a handwheel installed at its end, which drives the sliding seat 231 and the machining device 232 to feed along the second guide rails 211 to complete the hole machining or hole surface grinding of the guide rails.

[0046] The clamping unit is fixed to the top of the base 21 and located in front of the second guide rail 211, used to securely clamp the guide rail during processing. The clamping unit includes a clamping seat 221, a fixed clamping block 222, a movable clamping block 223, a push rod 224, and a first spring 225. The clamping seat 221 is a vertical plate. The fixed clamping block 222 is fixed on the clamping seat 221. The movable clamping block 223 is arranged opposite to the fixed clamping block 222, forming a clamping area to accommodate the guide rail. The push rod 224 is fixedly connected to the side of the movable clamping block 223 away from the fixed clamping block 222. The clamping seat 221 has a guide hole for the push rod 224 to pass through. The middle part of the push rod 224 is machined with an annular stepped surface. The first spring 225 is sleeved on the push rod 224, with one end abutting against the side wall of the clamping seat 221 away from the movable clamping block 223, and the other end abutting against the aforementioned annular stepped surface. In this way, the first spring 225 always applies an elastic force to the push rod 224 in the opposite direction of the fixed clamping block 222, causing the moving clamping block 223 to move away from the fixed clamping block 222, ensuring that the guide rail will not be clamped when no force is applied.

[0047] To accommodate guide rails of different specifications and compensate for assembly errors, an adjusting cap 226 is provided at the end of the push rod 224 away from the moving clamp 223. The adjusting cap 226 is sleeve-shaped, with elongated slots 227 on both opposite sides along the length of the push rod 224. Two screws 228 are symmetrically welded to the outer wall of the end of the push rod 224. The two screws 228 are inserted into the corresponding slots 227, and a locking nut is threaded onto each screw 228. After loosening the locking nut, the adjusting cap 226 can be pushed and pulled along the slots 227 to change the extension length of its end face relative to the end face of the push rod 224. After adjustment, the locking nut is tightened to achieve reliable locking between the push rod 224 and the adjusting cap 226.

[0048] Each conveying assembly includes a fixed base 31, a drive wheel set, and a linkage assembly. The fixed base 31 is fixedly mounted on the upper surface of the base 1. The drive wheel set is located on top of the fixed base 31 and includes a fixed guide wheel 321, a moving guide wheel 322, a drive gear 323, and an incomplete gear 324. The fixed guide wheel 321 is a powered free wheel, fixed to the fixed base 31 by a wheel frame. The moving guide wheel 322 is arranged opposite to the fixed guide wheel 321, and during conveying, they respectively abut against the two sides of the guide rail. A slider 33 is fixedly connected to the bottom of the moving guide wheel 322. The top of the fixed base 31 has a groove in which the slider 33 slides. A third lead screw 34 is rotatably connected to the fixed base 31. The axis of the third lead screw 34 is perpendicular to the conveying direction. The bottom of the slider 33 has a nut threadedly connected to the third lead screw 34. Rotating the third lead screw 34 adjusts the distance between the moving guide wheel 322 and the fixed guide wheel 321 to match guide rails of different widths.

[0049] The drive gear 323 is coaxially fixed to the upper end of the axle of the moving guide wheel 322, and the incomplete gear 324 meshes with the drive gear 323. The incomplete gear 324 is a toothed gear with a section of teeth and a section of arc surface, and its shaft is rotatably mounted on the slider 33. Thus, when the moving guide wheel 322 moves with the slider 33, the incomplete gear 324 and its shaft can move as a whole, always ensuring correct meshing with the drive gear 323. The shaft of the incomplete gear 324 is driven to rotate by a drive motor mounted on the slider 33 to provide transmission power.

[0050] The linkage assembly is used to reliably link the stepping conveying of the guide rail with the clamping and releasing actions of the fixture. It includes a pusher frame 41 and a sector-shaped pusher block 42. The sector-shaped pusher block 42 is fixedly sleeved on the shaft of the incomplete gear 324 and rotates synchronously with the incomplete gear 324. The sector-shaped pusher block 42 is generally sector-shaped and has radially protruding protrusions. A rectangular frame portion 411 is provided in the middle of the pusher frame 41. The frame portion 411 is sleeved on the outside of the sector-shaped pusher block 42, and the inner wall size of the frame portion 411 is adapted to the contour of the sector-shaped pusher block 42. An extension arm 412 extends from the outer side of the pusher frame 41, and the side of the extension arm 412 abuts against the end of the adjusting cap 226.

[0051] To ensure reliable resetting of the pusher frame 41, a pair of parallel guide rods 35 are fixed to the side of the slider 33. Both guide rods 35 pass through corresponding guide holes on the extension arm 412, allowing the pusher frame 41 to slide smoothly along the guide rods 35. A second spring 36 connects the extension arm 412 and the slider 33. The two ends of the second spring 36 are connected to the extension arm 412 and the slider 33 respectively, facilitating the provision of a force to the extension arm 412 away from the slider 33.

[0052] The teeth of the incomplete gear 324 and the protrusion of the sector push block 42 are misaligned in the circumferential direction. When the teeth of the incomplete gear 324 mesh with the drive gear 323 and drive the guide wheel 322 to rotate, the protrusion of the sector push block 42 completely disengages from the inner wall of the frame 411, releasing the support of the frame 411. At this time, under the elastic force of the second spring 36, the pusher 41 moves away from the slider 33, and the extension arm 412 will not press the end of the adjusting cap 226. Under the push of the first spring 225, the push rod 224 and the moving clamp 223 move away from the fixed clamp 222, releasing the clamping of the guide rail. Conversely, when the arc segment of the incomplete gear 324 is opposite to the drive gear 323, the protrusion of the fan-shaped push block 42 presses against the inner wall of the frame 411, overcoming the elastic force of the second spring 36 to push the pusher frame 41. The extension arm 412 presses against the adjusting cap 226, and then, through the push rod 224, overcomes the elastic force of the first spring 225, driving the moving clamping block 223 to move towards the fixed clamping block 222, and the fixture clamps the guide rail. Thus, the incomplete gear 324 automatically completes one step-by-step transport of the guide rail and reliable clamping during processing for each rotation.

[0053] To ensure coordinated operation of the three conveying components, a unified drive and adjustment structure is provided in this embodiment. The three conveying components are arranged longitudinally along the base 1 at intervals, and the third lead screws 34 of adjacent conveying components are connected by a first transmission component. The first transmission component can adopt a sprocket and chain mechanism, that is, a sprocket is installed on the same side end of each third lead screw 34, and they are connected in series by a chain. An adjusting handwheel drives one of the third lead screws 34, thereby driving the third lead screws 34 of the three conveying components to rotate synchronously, realizing the equidistant forward and backward adjustment of the three moving guide wheels 322, and ensuring that the guide rail is conveyed in parallel.

[0054] Simultaneously, the shafts of two adjacent incomplete gears 324 are connected by a second transmission assembly, enabling the three incomplete gears 324 to rotate synchronously. Alternatively, the second transmission assembly can be a sprocket and chain mechanism, connecting the shaft of the incomplete gear 324 in the middle conveying assembly to the shafts of the incomplete gears 324 on both sides via sprocket and chain transmissions. This achieves synchronous rotation of the three incomplete gears 324, ensuring synchronized conveying.

[0055] The working process is as follows: Based on the guide rail dimensions, adjust the position of the machining components, start the drive motor, and the three incomplete gears 324 begin to rotate synchronously under the action of the second transmission component. Their teeth gradually engage with the drive gear 323, driving the moving guide wheel 322 to rotate, thus propelling the guide rail forward one step along the conveying direction. During this process, the protrusion of the fan-shaped push block 42 rotates synchronously with the incomplete gears 324 and does not contact the inner wall of the frame 411. At this time, the moving clamping block 223 and the fixed clamping block 222 will not clamp the guide rail, allowing the guide rail to be freely conveyed under the drive of the moving guide wheel 322.

[0056] When the incomplete gear 324 continues to rotate until its arc segment aligns with the drive gear 323, the teeth disengage, the moving guide wheel 322 stops rotating, and the guide rail conveying pauses. Simultaneously, the protrusion of the sector-shaped pusher 42 returns to its position pressing against the inner wall of the frame 411, the pusher 41 overcomes the elastic force of the second spring 36 and moves towards the slider 33, the extension arm 412 presses against the end of the adjusting cap 226, and the push rod 224 drives the moving clamp 223 towards the fixed clamp 222, the fixture clamps the guide rail, and the two processing devices 232 can drill or grind the fixed guide rail. Processing is complete. As the incomplete gear 324 continues to rotate, the fixture releases the guide rail, and then the moving guide wheel 322 conveys the guide rail. This process repeats, with the guide rail passing through the drilling and grinding stations sequentially, completing all machining.

[0057] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0058] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A guide rail machining device, characterized in that, include: Base (1); At least one machined component is disposed on the base (1); The machining components include: A base (21) is provided on the base (1). The top of the base (21) is provided with a clamping unit for clamping the guide rail. The clamping unit includes a clamping seat (221), a fixed clamping block (222), and a movable clamping block (223). The fixed clamping block (222) is fixed on the clamping seat (221). The movable clamping block (223) is arranged opposite to the fixed clamping block (222). A push rod (224) is connected to the side of the movable clamping block (223) away from the fixed clamping block (222). The push rod (224) passes through the clamping seat (221), and a first spring (225) is sleeved on the push rod (224). The two ends of the first spring (225) abut against the push rod (224) and the clamping seat (221) respectively. A machining unit is provided on the base (21) for machining the guide rail held by the fixture unit; At least one conveying component is disposed on the base (1); The conveying assembly includes: A fixed base (31) is fixedly installed on the base (1); A drive wheel assembly is located on the top of the fixed base (31) and is used to drive the guide rail to move. The drive wheel assembly includes a fixed guide wheel (321), a moving guide wheel (322), a drive gear (323), and an incomplete gear (324). The fixed guide wheel (321) and the moving guide wheel (322) are arranged opposite to each other. The drive gear (323) is coaxially fixed to the top of the moving guide wheel (322). The incomplete gear (324) meshes with the drive gear (323). The linkage component includes a pusher frame (41) and a fan-shaped pusher block (42). The fan-shaped pusher block (42) is fixedly sleeved on the shaft of the incomplete gear (324). The pusher frame (41) has a frame portion (411) in the middle, which is sleeved on the outside of the fan-shaped pusher block (42). The pusher frame (41) has an extension arm (412) on the outside. The end of the extension arm (412) abuts against the end of the push rod (224) away from the moving clamp block (223). The teeth of the incomplete gear (324) are misaligned with the protrusion of the sector pusher (42) so that when the incomplete gear (324) drives the drive gear (323) to rotate, the sector pusher (42) releases its support to the inner wall of the frame (411).

2. The guide rail machining device as described in claim 1, characterized in that: The base (1) has two parallel first guide rails (11) on its top, and the base (21) is slidably mounted on the two first guide rails (11); a first lead screw (12) is rotatably connected to the base (1), the first lead screw (12) is parallel to the first guide rails (11), and the first lead screw (12) is threadedly connected to the bottom of the base (21).

3. A guide rail machining device as described in claim 1 or 2, characterized in that: The top of the base (21) is provided with two parallel second guide rails (211). The machining unit includes a sliding seat (231) and a machining device (232). The machining device (232) is mounted on the sliding seat (231). The sliding seat (231) is slidably disposed on the two second guide rails (211). A second lead screw (24) is rotatably connected to the base (21). The second lead screw (24) is parallel to the second guide rails (211) and is threadedly connected to the bottom of the sliding seat (231).

4. The guide rail machining device as described in claim 3, characterized in that: The base (1) is provided with two machining components, and the machining devices (232) of the two machining components are a drilling device and a grinding device, respectively.

5. The guide rail machining device as described in claim 1, characterized in that: The push rod (224) is provided with an adjusting cap (226) on the side away from the moving clamp (223). The adjusting cap (226) has a strip groove (227) on both sides along the length of the push rod (224). The outer wall of the push rod (224) is symmetrically provided with screws (228) that are inserted into the strip grooves (227). Each screw (228) has a locking nut threaded on its outer wall to lock the push rod (224) and the adjusting cap (226).

6. The guide rail machining device as described in claim 1, characterized in that: The bottom of the moving guide wheel (322) is provided with a slider (33), which is slidably disposed on the fixed seat (31). A third lead screw (34) is rotatably connected to the fixed seat (31), and the third lead screw (34) is threadedly connected to the slider (33).

7. The guide rail machining device as described in claim 6, characterized in that: The incomplete gear (324) is provided on the slider (33), and the slider (33) is provided with a pair of parallel guide rods (35). Both guide rods (35) pass through the extension arm (412), and a second spring (36) is connected between the extension arm (412) and the slider (33).

8. The guide rail machining device as described in claim 6, characterized in that: The base (1) is provided with three conveying components, which are spaced apart on the base (1) and used to jointly convey the guide rail.

9. The guide rail machining device as described in claim 8, characterized in that: The third lead screws (34) of two adjacent conveying assemblies are connected by a first transmission assembly so that the third lead screws (34) of the three conveying assemblies rotate synchronously.

10. A guide rail machining apparatus as described in claim 8 or 9, characterized in that: The shaft portions of two adjacent incomplete gears (324) are connected by a second transmission assembly so that the three incomplete gears (324) rotate synchronously.

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