Chain tool magazine and method of manufacturing the same

Abstract

This invention relates to the field of machine tool magazine technology, and in particular to a chain-type tool magazine and its manufacturing method. The chain-type tool magazine includes: a base plate; an annular guide rail, which is disposed along the outer peripheral edge of the base plate and protrudes from the outer peripheral side of the base plate; a tool chain, slidably sleeved on the outer peripheral side of the annular guide rail; a drive assembly including a sprocket mounted on the base plate, the sprocket being located on the inner peripheral side of the annular guide rail and meshing with the tool chain; and a cover plate installed on the side of the annular guide rail opposite to the base plate. The annular guide rail includes a first guide rail and a second guide rail symmetrically arranged, each having a groove extending circumferentially. The grooves of the first guide rail and the second guide rail face each other with slots and are slidably connected to the tool chain. In this invention, grooves for forming raceways are respectively formed on the first and second guide rails, reducing the manufacturing difficulty of the raceways.

Description

Technical Field

[0001] This invention relates to the field of machine tool magazine technology, and in particular to a chain-type tool magazine and its manufacturing method. Background Technology

[0002] Tool magazines are crucial components of CNC machine tools. Chain-type tool magazines are widely used in machining centers due to their advantages such as large capacity and fast tool changing speed. In existing chain-type tool magazines, the tool chain typically employs a sleeve roller chain or hollow roller chain structure. Several grippers are fixed to the chain via additional parts on the chain surface or hollow rollers. The grippers are then driven by the chain to the tool changing position to perform the tool change action.

[0003] When the tool chain moves within a chain-type tool magazine, its linear velocity is extremely high, typically reaching around 100 m / min. Therefore, the raceways that limit and constrain the tool chain must possess extremely high smoothness. Furthermore, the length of the raceways in a chain-type tool magazine is directly proportional to the tool capacity; to balance manufacturing costs with tool capacity requirements, the raceways usually employ a multi-segment splicing structure.

[0004] Therefore, existing chain-type tool magazines generally have the following problems: 1. The smoothness of the raceway splicing position is low, which will cause the tool chain to vibrate, generate noise, reduce the movement speed of the tool chain, and reduce the service life of the tool chain; 2. The length of the chain is difficult to match the length of the raceway, resulting in the chain being too tight and not running smoothly or too loose and not positioning accurately; 3. The tool magazine assembly and disassembly process is complicated and not convenient for maintenance. Summary of the Invention

[0005] This invention aims to solve the technical problems existing in related technologies. To this end, this invention proposes a chain-type tool magazine and its manufacturing method to solve the problems of uneven raceways, complex assembly and disassembly processes, and inconvenient maintenance in existing chain-type tool magazines.

[0006] In a first aspect, the present invention provides a chain-type tool magazine, comprising:

[0007] Base plate;

[0008] An annular guide rail is provided along the outer peripheral edge of the base plate and protrudes from the outer peripheral side of the base plate;

[0009] The blade chain is slidably fitted onto the outer periphery of the annular guide rail;

[0010] The drive assembly includes a sprocket mounted on the base plate, the sprocket being located on the inner circumferential side of the annular guide rail and engaging with the blade chain;

[0011] A cover plate is installed in the annular guide rail on the side opposite to the base plate;

[0012] The annular guide rail includes a first guide rail and a second guide rail arranged symmetrically, and the first guide rail and the second guide rail are respectively provided with grooves extending along their own circumference.

[0013] The grooves of the first guide rail and the grooves of the second guide rail are opposite each other with slots and are slidably connected to the knife chain respectively.

[0014] According to a chain-type tool magazine provided by the present invention, the first guide rail and the second guide rail are both composed of two semi-circular arc segments and two straight line segments spliced ​​together.

[0015] According to the present invention, a chain-type tool magazine includes a plurality of tool claws, wherein the tool claws include:

[0016] The chain link is embedded between the first guide rail and the second guide rail;

[0017] The clamping part extends outward from the outer periphery of the annular guide rail and is used to grip and release the cutting tool;

[0018] Several of the said claws are connected end to end by the chain links and slide along the grooves.

[0019] According to a chain-type tool magazine provided by the present invention, the tool chain further includes:

[0020] A pin is used to connect two adjacent chain links.

[0021] The roller is movably disposed within the groove;

[0022] The end of the pin protrudes from the chain link and is connected to the roller.

[0023] According to a chain-type tool magazine provided by the present invention, the drive assembly further includes:

[0024] The speed reducer passes through the cover plate and is connected to the annular guide rail;

[0025] The motor is mounted on the reducer.

[0026] According to a chain-type tool magazine provided by the present invention, the sprocket is provided with a positioning hole for aligning the tool changing position;

[0027] Several positioning holes are evenly distributed on the same circle, and the center lines of the positioning holes coincide with the symmetry plane of the sprocket teeth.

[0028] Secondly, the present invention also provides a method for manufacturing a chain-type tool magazine, used to manufacture the chain-type tool magazine described in any of the above-mentioned embodiments, the method comprising:

[0029] Grooves for limiting the blade chain are made on the first and second guide rails by integral machining;

[0030] After setting pin holes for assembly positioning on the first and second guide rails, heat treatment is performed.

[0031] When assembling the tool chain, the length deviation of each tool claw is controlled.

[0032] According to a method for manufacturing a chain-type tool magazine provided by the present invention, the first guide rail and the second guide rail are both composed of two semi-circular arc segments and two straight line segments spliced ​​together;

[0033] The method of creating grooves on the first and second guide rails by integral processing includes: after fixing the base plate to the machine tool, assembling semi-circular arc segments and straight segments on the base plate to form the first guide rail, setting matching marks at the joints of adjacent segments, and then continuously processing grooves on all segments constituting the first guide rail.

[0034] After removing the first guide rail from the base plate, assemble the semi-circular arc segment and the straight line segment on the base plate to form the second guide rail, and set the matching marks at the joint of the adjacent segments. Then, continuously machine grooves on all the segments that make up the second guide rail.

[0035] According to a method for manufacturing a chain-type tool magazine provided by the present invention, the step of providing pin holes for assembly positioning on the first guide rail and the second guide rail followed by heat treatment includes:

[0036] First, assemble each segment of the first guide rail onto the base plate according to the markings, and drill pin holes on each segment of the first guide rail;

[0037] Then, according to the markings, assemble each segment of the second guide rail onto the first guide rail, adjust the joint of the second guide rail to correspond with the joint of the first guide rail using the alignment device, and equip each segment of the second guide rail with drilled pin holes;

[0038] Then the first and second guide rails are disassembled into individual parts and sent for heat treatment to harden them.

[0039] According to a method for manufacturing a chain-type tool magazine provided by the present invention, controlling the length deviation of each cutting claw includes:

[0040] Before assembling the blade chain, measure the actual length of the link in each blade claw, and then group them based on the deviation between the actual length and the theoretical length.

[0041] When assembling the blade chain, two blades are arranged adjacent to each other in an alternating pattern of positive and negative deviation values ​​to reduce the deviation in the total length of the blade chain.

[0042] The above-described one or more technical solutions of this invention have at least one of the following technical effects:

[0043] Grooves are made on the first and second guide rails to form the raceway, which reduces the difficulty of manufacturing the raceway, improves the flatness of the raceway, and increases the movement speed and service life of the cutter chain.

[0044] In addition to the technical problems solved by the present invention, the technical features of the technical solutions constituted by the present invention, and the advantages brought about by the technical features of these technical solutions as described above, other technical features of the present invention and the advantages brought about by these technical features will be further explained in conjunction with the accompanying drawings, or will be learned through the practice of the present invention. Attached Figure Description

[0045] To more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0046] Figure 1 This is a three-dimensional structural diagram of a chain-type tool magazine provided in an embodiment of the present invention.

[0047] Figure 2 This is a schematic diagram of a knife chain installed in a ring guide rail, provided in an embodiment of the present invention.

[0048] Figure 3 This is a schematic diagram of tool changing position alignment via sprocket provided in an embodiment of the present invention.

[0049] Figure 4 This is a schematic diagram of machining a first guide rail on a machine tool, provided as an embodiment of the present invention.

[0050] Figure 5 This is a schematic diagram of machining a second guide rail on a machine tool, provided as an embodiment of the present invention.

[0051] Figure 6 This is a schematic diagram illustrating the assembly of a second guide rail on a base plate using semi-circular arc segments and straight line segments, as provided in an embodiment of the present invention.

[0052] Figure 7 This is a schematic diagram showing the change 'a' of the knife chain moving along a fixed track, as provided in an embodiment of the present invention.

[0053] Figure 8 This is a schematic diagram illustrating the widening of the groove on a semi-circular arc segment, provided as an embodiment of the present invention.

[0054] Figure label:

[0055] 100. Base plate; 200. Circular guide rail; 210. First guide rail; 220. Second guide rail; 300. Tool chain; 310. Tool claw; 311. Chain link; 312. Clamping part; 320. Pin shaft; 330. Roller; 400. Cover plate; 5. Sprocket; 51. Positioning hole; 6. Motor; 7. Reducer; 8. Tool-changing cylinder; 9. Position detection switch; 11. Bracket; 12. Sensor; 13. Machine tool. Detailed Implementation

[0056] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0057] In an embodiment of the present invention, a chain-type tool magazine is described.

[0058] like Figures 1 to 3 As shown, the chain-type tool magazine mainly includes a base plate 100, a ring guide rail 200, a tool chain 300, a drive assembly, and a cover plate 400.

[0059] The annular guide rail 200 is arranged along the outer peripheral edge of the base plate 100. Furthermore, the annular guide rail 200 protrudes from the outer peripheral side of the base plate 100.

[0060] The blade chain 300 is slidably fitted onto the outer periphery of the annular guide rail 200. The blade chain 300 includes a plurality of sequentially connected blade claws 310.

[0061] The drive assembly includes a sprocket 5 mounted on the base plate 100. The sprocket 5 is located on the inner circumference of the annular guide rail 200. Furthermore, the sprocket 5 meshes with the blade chain 300 to drive the blade chain 300 to move.

[0062] The cover plate 400 is installed in the annular guide rail 200 on the side opposite to the base plate 100.

[0063] The annular guide rail 200 includes a first guide rail 210 and a second guide rail 220 arranged symmetrically. The first guide rail 210 and the second guide rail 220 are respectively provided with grooves for forming a raceway.

[0064] Specifically, the first guide rail 210 is provided with a groove extending circumferentially around itself. The second guide rail 220 is also provided with a groove extending circumferentially around itself. The grooves of the first guide rail 210 and the second guide rail 220 are aligned with each other to form a complete raceway for limiting the movement of the blade chain 300.

[0065] Furthermore, the blade chain 300 is located between the first guide rail 210 and the second guide rail 220. Rollers 330 that are slidably connected to the grooves are respectively provided on both sides of the blade chain 300.

[0066] Furthermore, both the first guide rail 210 and the second guide rail 220 are composed of two semi-circular arc segments and two straight line segments spliced ​​together.

[0067] like Figure 4 and Figure 5 As shown, a semi-circular arc segment is first installed at each end of the base plate 100, and then two straight segments are installed in the middle of the base plate 100 to connect the semi-circular arc segments, splicing them together to form the first guide rail 210. Then, two semi-circular arc segments and two straight segments are sequentially installed on the first guide rail 210 to form a second guide rail 220 that is symmetrical to the structure of the first guide rail 210.

[0068] Furthermore, the blade chain 300 includes a plurality of blade claws 310. Each blade claw 310 includes a link portion 311 and a clamping portion 312.

[0069] The link 311 is embedded between the first guide rail 210 and the second guide rail 220. The clamping part 312 extends out of the outer periphery of the annular guide rail 200 and is used to grip and place the tool.

[0070] Several of the said cutting claws 310 are connected end to end by the said link portion 311. And the link portion 311 slides along the said groove.

[0071] Furthermore, the blade chain 300 also includes a pin 320 and a roller 330.

[0072] The pin 320 is used to connect two adjacent chain links 311. The roller 330 is movably disposed within the groove.

[0073] The end of the pin 320 protrudes from the chain link 311. Furthermore, the end of the pin 320 is connected to the roller 330.

[0074] Furthermore, the drive assembly also includes a speed reducer 7 and a motor 6.

[0075] The speed reducer 7 passes through the cover plate 400 and is connected to the annular guide rail 200. The motor 6 is mounted on the speed reducer 7.

[0076] Specifically, the cutter claws 310 are installed end to end in the raceway in a specific number, and the motor 6 drives the sprocket 5 to rotate through the reducer 7, thereby driving the cutter chain 300 to rotate.

[0077] Tool-removing cylinders 8 and position detection switches 9 are installed at the tool change position and manual tool unloading position to grip and release tools. The chain tool magazine is connected to the machine tool body 13 via bracket 11 and adjusting pad. In addition, the chain tool magazine may also be equipped with sensors 12 for detecting whether the tool is broken.

[0078] During tool change, the control of the tool pawl 310 that needs to participate in the tool change stops at the tool change position, and the tool release cylinder 8 controls the gripping and releasing action of the tool pawl 310 to complete the tool change action in coordination with the spindle.

[0079] Furthermore, when the sprocket 5 engages with the cutter chain 300, the pin 320 is located between two teeth of the sprocket 5. The two sides of the teeth of the sprocket 5 are in contact with the chain link 311. Moreover, the sprocket 5 and the cutter chain 300 are positioned between the first guide rail 210 and the second guide rail 220, making them difficult to see. To ensure that the sprocket 5 and the cutter chain 300 are engaged when adjusting the tool change position, a positioning hole 51 for aligning the tool change position is provided on the sprocket 5. A test bar can be inserted into the positioning hole 51 for easy measurement.

[0080] Several positioning holes 51 are evenly distributed on the same circle. The center lines of the positioning holes 51 coincide with the plane of symmetry of the teeth of the sprocket 5.

[0081] Specifically, the line connecting any two adjacent positioning holes 51 is perpendicular to the line connecting the meshing point and the center of the sprocket 5. When adjusting the tool change position, simply measure the distances d1 and d2 from the two positioning holes 51 to the designated surface (parallel to the meshing point of the tool chain 300), and rotate the sprocket 5 until d1 and d2 are equal. This confirms that the sprocket 5 and the tool chain 300 are in mesh. By setting positioning holes 51 on the sprocket 5, the accuracy and convenience of tool change position alignment can be improved.

[0082] In this embodiment, grooves for forming raceways are respectively opened on the first guide rail 210 and the second guide rail 220, which can reduce the manufacturing difficulty of the raceways, improve the flatness of the raceways, and increase the movement speed and service life of the blade chain 300.

[0083] Based on the above embodiments, another embodiment of the present invention introduces a method for manufacturing a chain-type tool magazine. This manufacturing method can be applied to any of the chain-type tool magazines described above.

[0084] The manufacturing method includes: using integral machining to open grooves on the first guide rail 210 and the second guide rail 220 for limiting the blade chain 300; setting pin holes on the first guide rail 210 and the second guide rail 220 for assembly positioning and then performing heat treatment; and controlling the length deviation of each blade claw 310 when assembling the blade chain 300.

[0085] Furthermore, when both the first guide rail 210 and the second guide rail 220 are composed of two semi-circular arc segments and two straight line segments spliced ​​together, the method of forming grooves on the first guide rail 210 and the second guide rail 220 by integral processing includes:

[0086] After fixing the base plate 100 to the machine tool 13, the semi-circular arc segment and the straight segment are assembled on the base plate 100 to form the first guide rail 210. Marks for matching are set at the joints of adjacent segments. Then, grooves are continuously machined on all segments that constitute the first guide rail 210, thereby reducing the unevenness at the joints of adjacent segments.

[0087] After removing the first guide rail 210 from the base plate 100, the second guide rail 220 is formed by assembling semi-circular arc segments and straight line segments on the base plate 100, and matching marks are set at the joints of adjacent segments. Then, grooves are continuously machined on all segments that constitute the second guide rail 220.

[0088] Furthermore, the step of providing pin holes for assembly positioning on the first guide rail 210 and the second guide rail 220 before heat treatment includes: first assembling each segment of the first guide rail 210 onto the base plate 100 according to the markings, and then drilling pin holes on each segment of the first guide rail 210.

[0089] Then, according to the markings, each segment of the second guide rail 220 is assembled onto the first guide rail 210. The joints of the second guide rail 220 are adjusted to correspond with the joints of the first guide rail 210 using the alignment device, and drilled pin holes are provided on each segment of the second guide rail 220.

[0090] Then the first guide rail 210 and the second guide rail 220 are disassembled into separate parts and sent for heat treatment to harden them.

[0091] Specifically, when manufacturing the chain-type tool magazine, the base plate 100 is first machined, and then the second guide rail 220 is spliced ​​on the base plate 100 using semi-circular arc segments and straight line segments.

[0092] like Figure 6 As shown, corresponding marks (such as EE, FF, MM, NN) are made at the joints of adjacent segments. Then, the machine tool 13 is used to continuously machine grooves on all segments that constitute the second guide rail 220, so that the joints of the guide rail become very smooth.

[0093] The machined second guide rail 220 is disassembled and spliced ​​onto the base plate 100 using semi-circular and straight segments to form the first guide rail 210. Corresponding marks are made at the joints of adjacent segments. The markings are similar in form to those on the second guide rail 220. Grooves are continuously machined on all segments constituting the first guide rail 210 using machine tool 13. This ensures that the joints of the rails are not only smooth, but also that the grooves of the first guide rail 210 correspond very well to the groove contours of the second guide rail 220.

[0094] The base plate 100 and all the segments constituting the first guide rail 210 and the second guide rail 220 are shipped to the assembly site together. Assembly personnel drill pin holes and install positioning pins on all the segments constituting the first guide rail 210 to improve the accuracy and convenience of repeated assembly. Two pin holes are drilled on each segment and positioned with the base plate 100.

[0095] After assembling all the segments constituting the second guide rail 220 according to the markings, install them on the first guide rail 210. Adjust the joints of the second guide rail 220 and their correspondence with the joints of the first guide rail 210 using an alignment device. After adjustment, drill pin holes and install positioning pins on all the segments constituting the second guide rail 220. Drill two pin holes on each segment and position them with the first guide rail 210.

[0096] After the first guide rail 210, the second guide rail 220, and the base plate 100 with drilled pin holes are disassembled, they are sent to the heat treatment stage for hardening. After the parts have completed heat treatment, they are sent to the assembly stage for assembly and the installation of locating pins. This is because the parts are too hard after heat treatment to be fitted with locating pin holes, so the step of drilling the pin holes in the assembly stage is moved to before the heat treatment.

[0097] like Figure 7 and Figure 8 As shown, due to the wave-like nature of chain drives, the distance between the ends of the cutter chain 300 changes periodically as it moves along a fixed track, with a variation of 'a'. To ensure the cutter chain 300 remains connected end-to-end, the grooves on the semi-circular arc segment need to be widened to allow for a certain variation in the movement trajectory of the cutter chain 300, thus compensating for the variation in the distance between its ends. Specifically, the inner and outer contours of the grooves on the semi-circular arc segment are not concentric, and the distance between the centers of the two contours is 'b', where 'b' > 'a / 4'. This allows the cutter chain 300 to move between path 1 and path 2 within the grooves of the semi-circular arc segment, ensuring that the distance between the beginning and end of the cutter chain 300 is equal and making its operation smoother.

[0098] Furthermore, controlling the length deviation of each cutter 310 includes:

[0099] Before assembling the blade chain 300, the actual length of the link 311 in each blade 310 is measured, and then the blades are grouped based on the deviation between the actual length and the theoretical length. When assembling the blade chain 300, two blades 310 are arranged to be adjacent in an alternating manner of positive and negative deviation values ​​to reduce the deviation of the total length of the blade chain 300.

[0100] Specifically, to control the overall length deviation of the blade chain 300, each blade 310 produced in batches is measured. The actual length of the link portion 311 in each blade 310 is measured, and they are grouped according to their actual dimensions.

[0101] For example, if the distance between the first and last rollers 330 in the chain link 311 is e ± 0.05 mm, and they are divided into two groups, then each 0.05 mm tolerance range constitutes one group. When the total number of cutter claws 310 is c, the grouping is as follows:

[0102]

[0103] When assembling the cutter chain, two adjacent cutter claws are arranged with alternating positive and negative deviation values. This assembly method allows positive and negative tolerances to cancel each other out, thereby reducing the deviation in the overall length of the cutter chain.

[0104] In the description of the embodiments of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0105] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0106] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0107] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms are not limited to the same embodiments or examples. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0108] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; 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; and these 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 method for manufacturing a chain-type tool magazine, characterized in that, Chain-type tool magazine includes: Base plate (100); An annular guide rail (200) is provided along the outer peripheral edge of the base plate (100) and protrudes from the outer peripheral side of the base plate (100); The blade chain (300) is slidably sleeved on the outer periphery of the annular guide rail (200); The drive assembly includes a sprocket (5) mounted on the base plate (100), the sprocket (5) being located on the inner circumferential side of the annular guide rail (200) and engaging with the blade chain (300); A cover plate (400) is installed in the annular guide rail (200) on the side opposite to the base plate (100); The annular guide rail (200) includes a first guide rail (210) and a second guide rail (220) arranged symmetrically, and the first guide rail (210) and the second guide rail (220) are respectively provided with grooves extending along their own circumference; The groove of the first guide rail (210) and the groove of the second guide rail (220) are opposite each other with their openings and are respectively slidably connected to the knife chain (300); The production method includes: Grooves are made on the first guide rail (210) and the second guide rail (220) by integral machining; after the base plate (100) is fixed to the machine tool (13), semi-circular arc segments and straight segments are assembled on the base plate (100) to form the first guide rail (210), and a pairing mark is set at the joint of adjacent segments. Then, grooves are continuously machined on all segments that constitute the first guide rail (210). After removing the first guide rail (210) from the base plate (100), the second guide rail (220) is formed by assembling semi-circular arc segments and straight line segments on the base plate (100), and markings for matching are set at the joints of adjacent segments. Then, grooves are continuously machined on all segments that constitute the second guide rail (220). After setting pin holes for assembly positioning on the first guide rail (210) and the second guide rail (220), heat treatment is performed; first, each segment of the first guide rail (210) is assembled on the base plate (100) according to the markings, and pin holes are drilled on each segment of the first guide rail (210); Then, according to the markings, each segment of the second guide rail (220) is assembled on the first guide rail (210). The joints of the second guide rail (220) are adjusted to correspond with the joints of the first guide rail (210) by the alignment device, and drill pin holes are provided on each segment of the second guide rail (220). Then the first guide rail (210) and the second guide rail (220) are disassembled into separate parts and sent for heat treatment to harden them; When assembling the cutter chain (300), the length deviation of each cutter claw (310) is controlled; before assembling the cutter chain (300), the actual length of the link portion (311) in each cutter claw (310) is measured, and then the segments are grouped based on the deviation between the actual length and the theoretical length. When assembling the blade chain (300), two blade claws (310) are arranged adjacent to each other in an alternating manner of positive and negative deviation values ​​to reduce the deviation of the total length of the blade chain (300); The first guide rail (210) and the second guide rail (220) are both composed of two semi-circular arc segments and two straight line segments spliced ​​together; the inner and outer contours of the grooves on the semi-circular arc segments are not concentric. When the knife chain (300) moves along the fixed track, the distance at its end will change periodically, and there is a change amount a. On a semi-circular arc segment, the inner and outer contours of the groove are not concentric, and the distance between the centers of the two contours is b, where b > a / 4.

2. The method for manufacturing a chain-type tool magazine according to claim 1, characterized in that, The blade chain (300) includes a plurality of blade claws (310), each blade claw (310) comprising: The link (311) is embedded between the first guide rail (210) and the second guide rail (220); The clamping part (312) extends outward from the outer periphery of the annular guide rail (200) and is used to grip and release the cutting tool; Several of the said claws (310) are connected end to end by the link portion (311) and slide along the groove.

3. The method for manufacturing a chain-type tool magazine according to claim 2, characterized in that, The blade chain (300) also includes: A pin (320) is used to connect two adjacent chain links (311). Roller (330) is movably disposed within the groove; The end of the pin (320) protrudes from the link (311) and is connected to the roller (330).

4. The method for manufacturing a chain-type tool magazine according to claim 3, characterized in that, The driving component also includes: The speed reducer (7) passes through the cover plate (400) and is connected to the annular guide rail (200); The motor (6) is mounted on the reducer (7).

5. The method for manufacturing a chain-type tool magazine according to claim 4, characterized in that, The sprocket (5) is provided with a positioning hole (51) for aligning the tool change position; Several positioning holes (51) are evenly distributed on the same circle, and the center line of the positioning holes (51) coincides with the symmetry plane of the teeth of the sprocket (5).

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