Chain guide device and chain type horizontal tool magazine

Abstract

The invention relates to the technical field of chain type tool magazines, in particular to a chain guide device and a chain type horizontal tool magazine which comprises a tool magazine body, an upper guide rail set, a lower guide rail set and a tensioning assembly. The upper guide rail group guides an upper guide wheel group of the chain group; the lower guide rail group guides a lower guide wheel group of the chain group; the tensioning assembly is used for adjusting the tensioning force of the running chain; one end, close to the driven end guide rail, of the tool magazine body is provided with clearance compensation mechanisms corresponding to the upper guide rail group and the lower guide rail group, each clearance compensation mechanism comprises two compensation blocks, a guide block, a driving assembly and a distance sensor, and the guide block is provided with a guide groove for accommodating the two compensation blocks; when the distance sensor monitors that the moving distance of the guide rail at the driven end is larger than a set value, the driving assembly drives the two compensation blocks to enter the gap, dynamic compensation of the gap is achieved, the compensated guide rail can provide stable support for the chain, shaking and deviation of the chain in the running process are reduced, and the service life of the chain is prolonged. Therefore, the running stability and the positioning precision of the chain are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of chain tool magazines, and particularly relates to a chain guiding device and a chain-type horizontal tool magazine. Background Art

[0002] A chain tool magazine is a common tool storage and replacement device in a numerical control machine tool, and its core component is a chain. The chain is made of high-strength materials, has sufficient load-bearing capacity and wear resistance, and forms a closed-loop structure.

[0003] In a chain tool magazine, guide rails are arranged on a base and are spliced in multiple sections. The setting direction of the guide rails is the same as the direction in which the elastic component releases elastic force, and it includes a linear guide rail in the middle part and arc-shaped guide rails at both ends. When the chain becomes loose during operation, by adjusting the arc-shaped guide rail at the driven end to move away from the driving end, the tension of the chain is adjusted to keep the chain in a tensioned state.

[0004] However, a gap will be generated between the adjusted arc-shaped guide rail at the driven end and the linear guide rail. When the gap exceeds a certain proportion (such as 10% - 20%) of the diameter of the guide wheel, the contact between the chain and the guide rail will become unstable, increasing the wear of the chain and the guide rail. Prolonged wear will further increase the gap. At this time, the chain will lose stable support during operation, shake or shift at the gap, resulting in an unstable running trajectory and seriously affecting the running positioning accuracy of the chain.

[0005] In view of the existence of the above problems, based on rich practical experience and professional knowledge in the engineering application of such products for many years, the inventor of the present invention actively conducts research and innovation in order to create a chain guiding device and a chain-type horizontal tool magazine, making it more practical. Summary of the Invention

[0006] The technical problem to be solved by the present invention is: to provide a chain guiding device and a chain-type horizontal tool magazine, effectively solving the problems in the background art.

[0007] In order to achieve the above purpose, the technical solution adopted by the present invention is: a chain guiding device, comprising: A tool magazine body; An upper guide rail group, arranged on the upper surface of the tool magazine body, for guiding the upper guide wheel group of the chain group; A lower guide rail group, arranged on the lower surface of the tool magazine body, for guiding the lower guide wheel group of the chain group; A tensioning assembly, arranged between the driven-end guide rails of the upper guide rail group and the lower guide rail group, for adjusting the tension of the running chain; Among them, a clearance compensation mechanism is provided corresponding to the upper guide rail group and the lower guide rail group at one end of the tool magazine body close to the driven end guide rail. The clearance compensation mechanism includes: Two compensation blocks; A guide block having a guide groove for accommodating the two compensation blocks; A driving assembly for driving the two compensation blocks to approach or separate from each other; A distance sensor for monitoring the moving distance of the driven end guide rail relative to the linear guide rail. If the monitored moving distance is greater than a set value, the driving assembly drives the two compensation blocks into the clearance.

[0008] Further, the contact surfaces of the driven end guide rail and the two linear guide rails are stepped.

[0009] Further, the guide block is fixed between two linear segments of the driven end guide rail; The guide block includes a first sliding wall, a second sliding wall, and a bottom plate. The two compensation blocks are placed in the semi-closed guide groove formed by the first sliding wall, the second sliding wall, and the bottom plate; And the inner side wall of the first sliding wall is aligned with the cross-section of the driven end guide rail or the inner side wall of the second sliding wall is aligned with the cross-section of the linear guide rail.

[0010] Further, the driving assembly includes: A first connecting rod and a second connecting rod, one end of which is hinged through a hinge shaft, and the other ends are respectively hinged to the two compensation blocks; A hydraulic cylinder is provided on the tool magazine body, and its driving rod is connected to the hinged ends of the first connecting rod and the second connecting rod through a connecting member; Wherein, the guide block is arranged on the driven end guide rail, and the force applied by the hydraulic cylinder is transmitted through the first connecting rod and the second connecting rod to drive the two compensation blocks to move towards the clearance, and at the same time keep the driven end guide rail in a braking state.

[0011] Further, the tensioning assembly includes a driving disc and two telescopic shafts arranged at one end of the driving disc facing the tool magazine body; One end of the telescopic shaft is fixed on the driving disc, and the other end extends into the tool magazine body, and the telescopic shaft is elastically supported by a spring; When the tensioning assembly drives the driven end guide rail to move to tension the chain group, the driving rod of the hydraulic cylinder moves synchronously with the driven end guide rail.

[0012] Further, the connecting member includes a connecting block connected to the driving rod and two limiting plates extending along the upper and lower edges of the connecting block; The first connecting rod and the second connecting rod are placed between the two limiting plates, and strip-shaped grooves are provided on the two limiting plates along the driving direction of the driving rod. When adjusting the tension force, the hinge shaft slides in the strip-shaped grooves.

[0013] Further, an elastic component is arranged on one side of the hinge shaft close to the driven end guide rail in the strip-shaped groove; And the elastic force of the elastic component is less than the elastic force of the tensioning component.

[0014] Further, a linkage component is arranged between the two groups of gap compensation mechanisms. The linkage component includes a connecting shaft and a sliding block; The sliding block is arranged in the sliding groove of the tool magazine body. The connecting shaft penetrates through the sliding block, and its two ends are respectively connected to the upper guide rail group and the lower guide rail at the hinge ends of the first connecting rod and the second connecting rod.

[0015] Further, auxiliary driving rods are arranged on the opposite surfaces of the two compensation blocks. One end of the auxiliary driving rod is embedded in the compensation block and is elastically supported by a spring, and the end extending out of the compensation block abuts against the opposite compensation block.

[0016] The present invention also provides a chain-type horizontal tool magazine, including the chain guiding device as described above; A support frame for supporting and fixing the chain guiding device; A chain group arranged on the chain guiding device; A plurality of tool claws arranged on a single link of the chain group; A transmission driving mechanism for driving the chain group to drive the plurality of tool claws for transmission.

[0017] The beneficial effects of the present invention are as follows: In the present invention, through the double-guide rail form of the upper guide rail group and the lower guide rail group, the movement of the chain can be better restricted, so that it is stably guided in the up and down directions; and when it is necessary to replace the worn guide rail, the upper guide rail group or the lower guide rail group can be operated separately without disassembling the entire guide rail system; and during the tension force adjustment process, through the cooperation of the compensation block, the guide block, the driving component and the distance sensor, the dynamic compensation of the gap is realized. The compensated guide rail can provide stable support for the chain, reduce the shaking and deviation of the chain during operation, and thus improve the running stability and positioning accuracy of the chain. Description of the Drawings

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0019] Figure 1 Installation schematic diagram of the chain guiding device in the embodiment of the present invention; Figure 2 Installation schematic diagram of the upper guide rail group and the lower guide rail group in the embodiment of the present invention; Figure 3 Installation schematic diagram of the gap compensation mechanism in the embodiment of the present invention; Figure 4 Structural schematic diagram of the tensioning assembly in the embodiment of the present invention; Figure 5 Structural schematic diagram of the gap compensation mechanism in the embodiment of the present invention; Figure 6 State view of the synchronous extension of the driving rod during tension force adjustment in the embodiment of the present invention; Figure 7 Splicing surface schematic diagram of the driven end guide rail and the linear guide rail in the embodiment of the present invention; Figure 8 Structural schematic diagram of the guide block in the embodiment of the present invention; Figure 9 Schematic diagram of the position of the hinge shaft in the strip-shaped groove and the partial enlarged view during tension force adjustment in the embodiment of the present invention; Figure 10 Schematic diagram of the position of the hinge shaft in the strip-shaped groove and the partial enlarged view during gap compensation in the embodiment of the present invention; Figure 11 Installation schematic diagram of the elastic component in the strip-shaped groove in the embodiment of the present invention; Figure 12 Structural schematic diagram of the auxiliary driving rod in the embodiment of the present invention.

[0020] Reference numerals: 1, tool magazine body; 2, upper guide rail group; 21, active end guide rail; 22, driven end guide rail; 23, linear guide rail; 3, lower guide rail group; 4, tensioning assembly; 41, driving disc; 42, telescopic shaft; 5, gap compensation mechanism; 51, compensation block; 52, guide block; 521, first sliding wall; 522, second sliding wall; 523, bottom plate; 53, driving component; 53a, hinge shaft; 53b, strip-shaped groove; 531, first connecting rod; 532, second connecting rod; 533, hydraulic cylinder; 54, connecting piece; 55, elastic component; 56, linkage component; 57, auxiliary driving rod. Detailed implementation manners

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0022] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this invention belongs. The terms used in the description of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0024] As Figures 1 to 12 shown in the chain guiding device, including: a tool magazine body 1, an upper guide rail group 2, a lower guide rail group 3 and a tensioning assembly 4; the upper guide rail group 2 is arranged on the upper surface of the tool magazine body 1 for guiding the upper guide wheel group of the chain group; the lower guide rail group 3 is arranged on the lower surface of the tool magazine body 1 for guiding the lower guide wheel group of the chain group; the tensioning assembly 4 is arranged between the driven end guide rail 22 of the upper guide rail group 2 and the lower guide rail group 3 for adjusting the tension of the running chain; Among them, a clearance compensation mechanism 5 is provided corresponding to the upper guide rail group 2 and the lower guide rail group 3 at one end of the tool magazine body 1 close to the driven end guide rail 22. The clearance compensation mechanism 5 includes two compensation blocks 51, a guide block 52, a driving assembly 53 and a distance sensor. The guide block 52 has a guide groove for accommodating the two compensation blocks 51; the driving assembly 53 is used to drive the two compensation blocks 51 to approach or separate from each other; the distance sensor is used to monitor the moving distance of the driven end guide rail 22. If the monitored moving distance is greater than the set value, the driving assembly 53 drives the two compensation blocks 51 into the clearance.

[0025] During the installation of the guiding device in the present invention, first, fix the tool magazine body 1 at a designated position; second, fix the upper guide rail group 2 on the upper surface of the tool magazine body 1, fix the lower guide rail group 3 on the lower surface of the tool magazine body 1, and install the tensioning component 4 between the driven-end guide rails 22 of the upper guide rail group 2 and the lower guide rail group 3. Adjust the initial tensioning force of the tensioning component 4 to keep the chain in an appropriate tensioned state in the initial state; then, at one end of the tool magazine body 1 close to the driven-end guide rail 22, install the clearance compensation mechanisms 5 corresponding to the upper guide rail group 2 and the lower guide rail group 3 respectively, install two compensation blocks 51, and place them into the guide grooves of the guide blocks 52; install the driving component 53, and connect the driving component 53 with the compensation blocks 51 to ensure that the driving component 53 can drive the compensation blocks 51 normally; install the distance sensor and connect it to the control system to ensure that the sensor can accurately monitor the moving distance of the driven-end guide rail 22; finally, debug the entire chain guiding device, check whether the installation of each component is firm and whether the operation is smooth, and calibrate the set value of the distance sensor to ensure that when the moving distance of the driven-end guide rail 22 exceeds the set value, the driving component 53 can drive the compensation blocks 51 into the clearance in time.

[0026] During the operation of the chain in the present invention, when the chain becomes loose, the tensioning component 4 will automatically adjust the tensioning force to keep the chain in an appropriate tensioned state; the distance sensor monitors the moving distance of the driven-end guide rail 22 in real time. When it is detected that the moving distance of the driven-end guide rail 22 exceeds the set value, it indicates that the clearance between the chain and the guide rail may increase. At this time, the driving component 53 will drive the two compensation blocks 51 into the clearance between the linear guide rail 23 and the driven-end guide rail 22 according to the signal of the sensor. After the compensation blocks 51 enter the clearance, the stable contact between the chain and the guide rail is restored.

[0027] In the present invention, through the double-guide rail form of the upper guide rail group 2 and the lower guide rail group 3, the movement of the chain can be better restricted, so that it can be stably guided in both the upper and lower directions; and when it is necessary to replace the worn guide rail, the upper guide rail group 2 or the lower guide rail group 3 can be operated separately without disassembling the entire guide rail system; and during the tensioning force adjustment process, through the cooperation of the compensation blocks 51, the guide blocks 52, the driving component 53 and the distance sensor, the dynamic compensation of the clearance is realized. The compensated guide rail can provide stable support for the chain, reduce the shaking and deviation of the chain during operation, thereby improving the operation stability and positioning accuracy of the chain.

[0028] In the present invention, both the upper guide rail group 2 and the lower guide rail group 3 include a driving end guide rail 21, a driven end guide rail 22, and two linear guide rails 23 located therebetween; the two linear guide rails 23 are arranged in parallel and form a closed-loop track with the driving end guide rail 21 and the driven end guide rail 22, which can ensure that the chain maintains stable guidance during operation. The double-guide rail constraint form further enhances the stability of the guidance. Moreover, the two linear guide rails 23 adopt a multi-segment structure, which reduces the processing difficulty, has good interchangeability, and improves the convenience of maintenance.

[0029] In the preferred solution, as Figure 7 shown, the contact surface between the driven end guide rail 22 and the two linear guide rails 23 is stepped. The stepped contact surface can increase the effective contact area between the guide rails, thereby improving the load-bearing capacity and rigidity of the guide rails; the stepped contact surface can make the wear more evenly distributed on the guide rails. Compared with the traditional flat contact, the stepped design can reduce the increase in clearance caused by local wear, thereby reducing the maintenance cost.

[0030] As Figure 6 and Figure 8 shown, the guide block 52 is fixed between the two linear segments of the driven end guide rail 22; the guide block 52 includes a first sliding wall 521, a second sliding wall 522, and a bottom plate 523. Two compensation blocks 51 are placed in the semi-closed guide groove formed by the first sliding wall 521, the second sliding wall 522, and the bottom plate 523. Specifically, the length of the guide groove is greater than the sum of the lengths of the two compensation blocks 51, and the two compensation blocks 51 can completely enter the guide groove without affecting the splicing of the driven end guide rail 22 and the two linear guide rails 23. The semi-closed structure formed by the first sliding wall 521, the second sliding wall 522, and the bottom plate 523 can better restrict the movement of the compensation blocks 51, enabling them to slide smoothly in the guide groove. The lubricating layer on the contact surface reduces friction and wear during movement. Aligning the inner side wall of the first sliding wall 521 with the cross-section of the driven end guide rail 22 or aligning the inner side wall of the second sliding wall 522 with the cross-section of the linear guide rail 23 can provide a clear guiding path for the compensation blocks 51. When adjusting the tension, the guide block 52 moves synchronously with the driven end guide rail 22. When the gap is greater than the set value, the two compensation blocks 51 slide in the guide groove and smoothly transition to the cross-section of the driven guide rail through the inner side wall, ensuring the stability of the sliding process of the compensation blocks 51 and ensuring that the compensation blocks 51 can smoothly slide into the cross-section of the driven end guide rail 22.

[0031] As Figure 5As shown, in the present invention, the driving component 53 includes a first connecting rod 531, a second connecting rod 532, and a hydraulic cylinder 533. One ends of the first connecting rod 531 and the second connecting rod 532 are hinged through a hinge shaft 53a, and the other ends are respectively hinged to two compensation blocks 51; the hydraulic cylinder 533 is arranged on the tool magazine body 1, and its driving rod is connected to the hinged ends of the first connecting rod 531 and the second connecting rod 532 through a connecting member 54. The guiding block 52 is arranged on the driven-end guide rail 22. The force applied by the hydraulic cylinder 533 is transmitted through the first connecting rod 531 and the second connecting rod 532. One component force drives the two compensation blocks 51 to move towards the gap, and the other component force applies a tension force to the chain group through the driven-end guide rail 22, and at the same time keeps the driven-end guide rail 22 in a braking state, which helps to maintain the stability of the gap and avoid the occurrence of compensation errors or interference phenomena due to the floating support of the driven-end guide rail 22.

[0032] As Figure 4 shown, the tensioning component 4 includes a driving disk 41 and two telescopic shafts 42 arranged at one end of the driving disk 41 facing the tool magazine body 1; one ends of the telescopic shafts 42 are fixed on the driving disk 41, and the other ends extend into the tool magazine body 1, and the telescopic shafts 42 are elastically supported by springs; when the tensioning component 4 drives the driven-end guide rail 22 to move to tension the chain group, the driving rod of the hydraulic cylinder 533 moves synchronously with the driven-end guide rail 22.

[0033] When adjusting the tension force of the chain group, the driven-end guide rail 22 moves under the action of the tensioning component 4. At this time, the oil pressures at the inlet and outlet of the hydraulic cylinder 533 are in a balanced state, so that the driving rod can smoothly extend following the driven-end guide rail 22. During the tension force adjustment process, once the gap exceeds the set value, the rodless oil cavity of the hydraulic cylinder 533 immediately admits oil, and the oil pressure in the rodless oil cavity acts on the driving rod, causing the driving rod to enter the compensation action in advance; when the tension adjustment is completed, hydraulic oil continues to be injected into the rodless oil cavity, and the driving rod does not need to start and wait, and can directly drive the two compensation blocks 51 to move through the first connecting rod 531 and the second connecting rod 532, so that the driving rod can quickly respond to the gap compensation requirement, reduce the time delay in the compensation process, and improve the operation efficiency of the entire system.

[0034] As a preferred solution, the connecting member 54 includes a connecting block connected to the driving rod and two limiting plates formed by extending along the upper and lower edges of the connecting block; the first connecting rod 531 and the second connecting rod 532 are placed between the two limiting plates, and strip-shaped grooves 53b are arranged on the two limiting plates along the driving direction of the driving rod. When adjusting the tension force, the hinge shaft 53a slides in the strip-shaped grooves 53b. As Figure 9As shown, during the process of adjusting the tension of the driven-end guide rail 22, the guide block 52 drives the two compensation blocks 51 to move synchronously. The hinge shaft 53a of the first connecting rod 531 and the second connecting rod 532 slides in the strip-shaped groove 53b. At this time, the driving rod remains stationary.

[0035] To avoid unnecessary friction between the two compensation blocks 51 and the linear guide rail 23, as Figure 11 shown, an elastic component 55 is provided on the side of the hinge shaft 53a close to the driven-end guide rail 22 within the strip-shaped groove 53b; and the elastic force of the elastic component 55 is less than the elastic force of the tensioning component 4. Specifically, the elastic component 55 includes a flexible sheet within the strip-shaped groove 53b and a rod body provided on the side of the flexible sheet away from the hinge shaft 53a. The rod body penetrates the side wall of the connecting member 54, and a spring is provided on the rod body between the flexible sheet and the side wall of the strip-shaped groove 53b. The flexible sheet contacts the hinge shaft 53a. When the tensioning component 4 works, the elastic component 55 will not generate excessive resistance to the movement of the driven-end guide rail 22, ensuring that the system can normally adjust the tension of the chain; in addition, the reverse acting force of the elastic component 55 will act on the hinge ends of the first connecting rod 531 and the second connecting rod 532, forming a force opposite to the tension force, so that the two compensation blocks 51 approach each other and maintain a certain distance from the linear guide rail 23.

[0036] As a preference of the above embodiment, to ensure synchronous compensation between the upper guide rail group 2 and the lower guide rail group 3, as Figure 8 shown, a linkage component 56 is provided between the two gap compensation mechanisms 5. The linkage component 56 includes a connecting shaft and a sliding block; the sliding block is arranged in the sliding groove of the tool magazine body 1, the connecting shaft penetrates the sliding block, and its two ends are respectively connected to the upper guide rail group 2 and the lower guide rail at the hinge ends of the first connecting rod 531 and the second connecting rod 532.

[0037] The sliding block slides in the sliding groove along the tension adjustment direction. The sliding block supports and drives the connecting shaft to drive the combination of the first connecting rod 531 and the second connecting rod 532 of the upper guide rail group 2 and the lower guide rail group 3 to move synchronously. In addition, a guiding slide rail is provided on the contact surface between the sliding block and the side wall of the sliding groove to reduce friction and ensure the reliability of the movement direction.

[0038] In the present invention, the two compensation blocks 51 are in surface contact within the guide block 52. During the driving process, the driving force is perpendicular to the contact surface. Through the first connecting rod 531 and the second connecting rod 532, the driving force for driving the two compensation blocks 51 to slide along the guide block 52 is small in the initial state, seriously affecting the initial response speed. And affected by the starting friction force, an excessive driving force will be applied, easily causing a crosstalk phenomenon at the moment of movement. Therefore, to ensure the driving stability of the compensation blocks 51 during gap compensation, auxiliary driving rods 57 are provided on the opposite surfaces of the two compensation blocks 51, as Figure 12As shown, one end of the auxiliary drive rod 57 is embedded in the compensation block 51 and elastically supported by a spring. The end extending out of the compensation block 51 abuts against the opposite compensation block 51, providing an initial starting force for the two compensation blocks 51, optimizing the driving force of the entire system, and significantly improving the response speed of the compensation block 51 in the initial state.

[0039] The present invention also provides a chain-type horizontal tool magazine, which includes a chain guiding device, a support frame, a chain group, a plurality of tool claws, and a transmission driving mechanism. The support frame supports and fixes the chain guiding device; the chain group is arranged on the chain guiding device; a plurality of tool claws are arranged on a single link of the chain group; and the transmission driving mechanism is used to drive the chain group to drive the plurality of tool claws for transmission.

[0040] The chain-type horizontal tool magazine using the chain guiding device significantly improves the operation accuracy, stability, and efficiency of the tool magazine through precise guiding, rapid clearance compensation, reduced wear, and optimized force transmission.

[0041] Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only used to illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A chain guiding device, characterized in that, Comprising: Tool magazine body; Upper guide rail group, arranged on the upper surface of the tool magazine body, for guiding the upper guide wheel group of the chain group; Lower guide rail group, arranged on the lower surface of the tool magazine body, for guiding the lower guide wheel group of the chain group; Tensioning component, arranged between the driven end guide rails of the upper guide rail group and the lower guide rail group, for adjusting the tension of the running chain; Wherein, at one end of the tool magazine body close to the driven end guide rail, gap compensation mechanisms are respectively provided corresponding to the upper guide rail group and the lower guide rail group, and the gap compensation mechanisms include: Two compensation blocks; Guide block, having a guide groove for accommodating the two compensation blocks; Drive component, for driving the two compensation blocks to approach or move away from each other; Distance sensor, for monitoring the moving distance of the driven end guide rail relative to the linear guide rail. If the monitored moving distance is greater than the set value, the drive component drives the two compensation blocks into the gap.

2. The chain guiding device according to claim 1, wherein The contact surfaces of the driven end guide rail and the two linear guide rails are stepped.

3. The chain guiding device according to claim 1, characterized in that, The guide block is fixed between the two linear segments of the driven end guide rail; The guide block includes a first sliding wall, a second sliding wall and a bottom plate, and the two compensation blocks are placed in the semi-enclosed guide groove formed by the first sliding wall, the second sliding wall and the bottom plate; And the inner side wall of the first sliding wall is aligned with the cross section of the driven end guide rail or the inner side wall of the second sliding wall is aligned with the cross section of the linear guide rail.

4. The chain guiding device according to claim 1, characterized in that, The drive component includes: A first connecting rod and a second connecting rod, one end of which is hinged through a hinge shaft, and the other ends are respectively hinged to the two compensation blocks; Hydraulic cylinder, arranged on the tool magazine body, and its driving rod is connected to the hinged ends of the first connecting rod and the second connecting rod through a connecting piece; Wherein, the guide block is arranged on the driven end guide rail, and the force applied by the hydraulic cylinder is transmitted through the first connecting rod and the second connecting rod to drive the two compensation blocks to move towards the gap, and at the same time keep the driven end guide rail in a braking state.

5. The chain guiding device according to claim 4, characterized in that, The tensioning component includes a drive disk and two telescopic shafts arranged at one end of the drive disk facing the tool magazine body; One end of the telescopic shaft is fixed on the drive disk, and the other end extends into the tool magazine body and is elastically supported by a spring for the telescopic shaft; When the tensioning component drives the driven end guide rail to move to tension the chain group, the driving rod of the hydraulic cylinder moves synchronously with the driven end guide rail.

6. The chain guiding device according to claim 4, characterized in that, The connecting piece includes a connecting block connected to the driving rod and two limiting plates extending along the upper and lower edges of the connecting block; The first connecting rod and the second connecting rod are placed between the two limiting plates, and strip-shaped grooves are arranged on the two limiting plates along the driving direction of the driving rod. When adjusting the tension, the hinge shaft slides in the strip-shaped grooves.

7. The chain guiding device according to claim 6, characterized in that, An elastic component is arranged on one side of the hinge shaft close to the driven end guide rail in the strip-shaped groove; And the elastic force of the elastic component is less than the elastic force of the tensioning component.

8. The chain guiding device according to claim 4, characterized in that, A linkage component is arranged between the two groups of gap compensation mechanisms, and the linkage component includes a connecting shaft and a sliding block; The sliding block is arranged in the sliding groove of the tool magazine body, and the connecting shaft penetrates through the sliding block, and its two ends are respectively connected to the upper guide rail group and the lower guide rail at the hinge ends of the first connecting rod and the second connecting rod.

9. The chain guiding device according to claim 4, characterized in that Auxiliary drive rods are arranged on the opposite surfaces of the two compensation blocks. One end of the auxiliary drive rod is embedded in the compensation block and elastically supported by a spring, and the end extending out of the compensation block abuts against the opposite compensation block.

10. A chain-type horizontal tool magazine, characterized in that, Comprising the chain guiding device according to any one of claims 1-9; A support frame for supporting and fixing the chain guiding device; A chain group arranged on the chain guiding device; A plurality of tool claws arranged on a single link of the chain group; A transmission drive mechanism for driving the chain group to drive a plurality of the tool claws for transmission.

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