Worm and gear helical tooth speed reducer for tool magazine

Abstract

The utility model provides a worm and gear helical tooth speed reducer for a tool magazine, and belongs to the technical field of machinery. The speed reducer solves the problem of how to improve the adaptability of the speed reducer. The worm and gear helical tooth speed reducer for the tool magazine comprises a shell internally and rotatably connected with a worm gear, the shell is in threaded connection with a worm gear bearing gland for sealing and covering the worm gear, the worm and gear helical tooth speed reducer for the tool magazine further comprises a support, and the support is provided with a first connecting part and a second connecting part which are arranged back to the shell in a protruding mode. The support is further provided with a limiting groove, the worm gear bearing gland is embedded in the limiting groove, and the support and the shell are fixed in a screwed mode through a fastener. The worm and gear helical tooth speed reducer for the tool magazine is higher in adaptability.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical technology and relates to a worm gear helical gear reducer for a tool magazine. Background Technology

[0002] A tool magazine is a device that provides the tool storage and tool changing capabilities required in automated machining processes. Its automatic tool changing mechanism can store multiple tools and can automatically switch to the corresponding tool for machining operations according to different working conditions. It is a common device in modern industrial production.

[0003] In existing technologies, the housing of a speed reducer is often directly fixed to the machine tool column by screws or bolts, and the output shaft of the speed reducer is connected to the tool magazine for transmission, ensuring that the installation is firm and the transmission is stable. However, with the continuous iteration of technology, the functions of the tool magazine are more comprehensive, but the number of parts to be assembled is also greater, which causes changes in the housing used to load the parts. In addition, the connection between the speed reducer and the machine tool column leaves insufficient space to accommodate the tool magazine, resulting in situations where the speed reducer is not securely assembled or cannot be installed, and its adaptability is poor. Summary of the Invention

[0004] The purpose of this utility model is to address the aforementioned problems in existing technologies by proposing a worm gear helical gear reducer for tool magazines. The technical problem to be solved by this utility model is: how to improve the adaptability of the reducer.

[0005] The objective of this utility model can be achieved through the following technical solution: A worm gear helical gear reducer for a tool magazine includes a housing with a worm gear rotatably connected inside, and a worm gear bearing cover screwed onto the housing to seal the worm gear. The feature is that the worm gear helical gear reducer for a tool magazine further includes a bracket, which has a connecting part one and a connecting part two protruding from the housing, and a limiting groove on the bracket. The worm gear bearing cover is embedded in the limiting groove, and the bracket and the housing are fixed together by fasteners.

[0006] Compared to existing technologies, this worm gear helical gear reducer for tool magazines differs in that: the reducer itself includes a housing and a worm gear installed inside the housing, and a separate bracket is provided on top of this. The bracket is detachably connected to the machine tool column via connecting parts one and two using fasteners, ensuring the stability of the connection between the bracket and the machine tool column. Furthermore, a limiting groove is provided on the bracket. During assembly, the worker can align the worm gear bearing cap on the housing with the limiting groove and insert it. The groove wall restricts the worm gear bearing cap, thus achieving initial positioning of the housing. Then, fasteners are used to screw and lock the bracket and housing together, ensuring that the reducer is firmly positioned on the machine tool column. This minimizes the risk of insecure positioning between the reducer housing and the machine tool column, effectively improving the reducer's adaptability.

[0007] In the aforementioned worm gear helical gear reducer for tool magazines, the support is plate-shaped. One side of the support plate has an outwardly protruding portion along its circumference. A limiting groove is formed within the protruding portion. Several fixing holes are circumferentially formed on the protruding portion, penetrating the other side of the support plate, and these fixing holes are spaced apart circumferentially along the protruding portion. The protruding portion creates the limiting groove on the support, while the fixing holes are located on the protruding portion, preventing the limiting groove and fixing holes from weakening the support structure's strength. During assembly, after the worm gear bearing cap is inserted into the limiting groove within the protruding portion, the reducer can be connected and fixed to the support by screws engaging with the fixing holes and threaded holes on the housing.

[0008] In the aforementioned worm gear helical gear reducer for tool magazines, a clearance notch is provided on the outer wall of the protrusion, and the clearance notch is connected to the limiting groove. It should be noted that an output shaft is rotatably connected within the reducer housing, and a secondary driven gear for transmission is fixedly connected to the output shaft. A gear bearing cover that seals the output shaft is screwed onto the reducer housing. To avoid interference between the gear bearing cover and the protrusion during assembly, this application provides a clearance notch on the protrusion, allowing the gear bearing cover to be inserted into the clearance notch during the insertion of the worm gear bearing cover into the limiting groove, thus preventing interference.

[0009] In the aforementioned worm gear helical gear reducer for a tool magazine, a clearance groove is formed on the side plate of the bracket facing the housing, adjacent to the protrusion. A motor with a drive shaft connected to the worm gear is mounted on the top of the housing, and the motor is embedded in the clearance groove. The motor is connected to a clamping worm gear rotatably connected within the housing, and the power output is achieved through the cooperation of the clamping worm gear and the worm wheel. The clearance groove accommodates the motor, preventing interference between the motor and the bracket.

[0010] In the aforementioned worm gear helical gear reducer for tool magazines, a front deep groove ball bearing and a rear deep groove ball bearing are fixedly installed inside the housing. A clamping worm is rotatably connected inside the housing, which is fixedly connected to the motor drive shaft and meshes with the worm gear. The clamping worm is engaged with the inner rings of the front deep groove ball bearing and the rear deep groove ball bearing, respectively. A front adjusting shim is detachably connected inside the housing on the side of the front deep groove ball bearing opposite to the rear deep groove ball bearing, and a rear adjusting shim is detachably connected inside the housing on the side of the rear deep groove ball bearing opposite to the front deep groove ball bearing. Specifically, the transmission between the motor and the worm gear is achieved through a clamping worm gear rotatably connected within the housing. Furthermore, the rotation of the clamping worm gear is guided and limited by front and rear deep groove ball bearings fixed within the housing, preventing circumferential movement. In addition, it is worth mentioning that this application utilizes front and rear adjusting shims within the housing to make minute adjustments to the position of the clamping worm gear within the housing, thereby eliminating meshing backlash during transmission and ensuring more accurate positioning of the reducer-driven tool magazine.

[0011] In the aforementioned worm gear helical reducer for tool magazines, the support is a rectangular plate arranged vertically. There are two connecting parts, located on opposite sides of the top of the support, each with a connecting hole. A second connecting part is formed on one side of the support, below one of the connecting parts, and also has a connecting hole. The support is initially connected and fixed to the machine tool column through the connecting holes and fasteners on the two connecting parts, and then screwed to the machine tool column through the connecting holes and fasteners on the second connecting part, ensuring that the support and reducer are firmly positioned on the machine tool column.

[0012] In the aforementioned worm gear helical reducer for tool magazines, each of the connecting parts and the side of the bracket facing away from the housing has a reinforcing rib. The top of the bracket has a reinforcing plate fixedly connected to the two connecting parts, and a second reinforcing rib is provided between the reinforcing plate and the side of the bracket facing away from the housing. This ensures higher structural stability between the two connecting parts and the bracket.

[0013] In the aforementioned worm gear helical gear reducer for tool magazines, a secondary drive wheel is rotatably connected within the housing. The outer wall of the secondary drive wheel has an outwardly protruding positioning portion along its circumference. The worm wheel is sleeved on the secondary drive wheel and abuts against the positioning portion. The worm wheel has stepped holes penetrating its two sides. The worm wheel and the positioning portion are bolted together and locked by bolts passing through the stepped holes and the positioning portion. This method of connecting the worm wheel and the secondary drive wheel prevents transmission failure due to wear after prolonged use. It is also worth noting that in this device, when the motor drives the clamping worm to rotate, the clamping worm drives the worm wheel to rotate, and sequentially drives the worm wheel, the secondary drive wheel, and the secondary driven wheel, ultimately achieving transmission through the output shaft.

[0014] Compared with existing technologies, this worm gear helical reducer for tool magazines has the following advantages:

[0015] 1. A bracket is added on the basis of the original reducer structure. The reducer housing is connected to the limit groove on the bracket by the worm gear bearing cover and then locked by fastener screws. Under the premise of ensuring that the connection between the two is firm, the bracket is connected and fixed to the machine tool column by fasteners through the first connection part and the second connection part, ensuring the compatibility of the reducer.

[0016] 2. The worm gear used for transmission in the housing is sleeved outside the secondary drive gear and abuts against the positioning part on its outer wall. The bolts and the stepped holes on the worm gear and the positioning holes on the positioning part are used to achieve screw connection and lock, ensuring the installation stability of the worm gear.

[0017] 3. The worm gear and clamping worm are placed at the light load end of the transmission system, while the secondary driving gear and secondary driven gear are placed at the heavy load end of the transmission system, thereby avoiding unnecessary wear of the worm gear and clamping worm and ensuring transmission accuracy. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the worm gear helical gear reducer used in this tool magazine.

[0019] Figure 2 This is a sectional view of the housing and support of the worm gear helical gear reducer used in this tool magazine.

[0020] Figure 3 This is a schematic diagram of the shell structure.

[0021] Figure 4 This is a schematic diagram of the support structure.

[0022] Figure 5 This is a structural schematic diagram of the support structure from another perspective.

[0023] Figure 6This is a sectional view and a partial enlarged view of the housing with the clamping worm gear installed inside.

[0024] Figure 7 This is a sectional view of the worm gear helical reducer used in this tool magazine.

[0025] In the diagram, 1. Housing; 11. Worm gear; 111. Stepped hole; 12. Worm gear bearing cap; 13. Motor; 14. Secondary drive wheel; 141. Positioning part; 15. Gear bearing cap; 16. Secondary driven wheel; 17. Clamping worm; 18. Output shaft; 19. Front deep groove ball bearing; 10. Rear deep groove ball bearing; 2. Bracket; 21. Connecting part; 211. Connecting hole one; 212. Reinforcing rib one; 22. Connecting part two; 221. Connecting hole two; 23. Limiting groove; 24. Protrusion; 241. Fixing hole; 242. Clearance notch; 25. Clearance groove; 26. Reinforcing plate; 261. Reinforcing rib two; 3. Front adjusting shim; 4. Rear adjusting shim. Detailed Implementation

[0026] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0027] like Figure 1 , Figure 6 as well as Figure 7As shown, this worm gear helical reducer for tool magazine includes a housing 1. Inside the housing 1, a clamping worm 17, a secondary drive gear 14, and an output shaft 18 are rotatably connected. More specifically, a worm gear 11 is fixed to the secondary drive gear 14, and a secondary driven gear 16 is fixed to the output shaft 18. A motor 13 is fixedly connected to the outside of the housing 1, and the motor 13 is drivingly connected to the clamping worm 17. The clamping worm 17 and the worm gear 11 mesh with each other through their teeth, and the secondary drive gear 14 and the secondary driven gear 16 mesh with each other through their teeth. This connection relationship enables the sequential transmission of power, which is ultimately output to the outside through the output shaft 18. Regarding the connection of the clamping worm 17, it should be noted that a front deep groove ball bearing 19 and a rear deep groove ball bearing 20 are fixedly arranged opposite each other inside the housing. One end of the clamping worm 17 is fixedly connected to the drive shaft of the motor 13, and the clamping worm 17 and the worm wheel 11 mesh through gear teeth. In addition, the clamping worm 17 is engaged with the inner rings of the front deep groove ball bearing 19 and the rear deep groove ball bearing 20 respectively. In the housing 1, the front adjusting shim 3 is detachably connected to the side of the front deep groove ball bearing 19 opposite to the rear deep groove ball bearing 10, and the rear adjusting shim 4 is detachably connected to the side of the rear deep groove ball bearing 10 opposite to the front deep groove ball bearing 19. In addition, this application makes certain improvements to the connection between the worm gear 11 and the secondary drive wheel 14. In the prior art, the two are connected by a key, which will loosen due to wear after long-term use. In this application, a positioning part 141 protruding outward is formed on the outer edge of the secondary drive wheel 14. The worm gear 11 is connected to the outer side of the secondary drive wheel 14 by a sleeve and abuts against the positioning part 141. A stepped hole 111 is opened on the worm gear 11 and is provided on both sides. A positioning hole is opened on the positioning part 141 and is opposite to the position of the stepped hole 111. The worm gear 11 is positioned on the secondary drive wheel 14 by bolts passing through the stepped hole 111 and screwed into the positioning hole.

[0028] Combination Figure 2-4One side of the housing 1 is screwed with a worm gear bearing cap 12 for sealing the worm gear 11 and a gear bearing cap 15 for sealing the secondary driven gear 16. This worm gear helical gear reducer for the tool magazine also includes a bracket 2, which is plate-shaped. One side of the plate has an outwardly protruding portion 24 along its circumference, and a columnar limiting groove 23 is formed within the protruding portion 24 on this side of the bracket 2. Several spaced fixing holes 241 are provided on the protruding portion 24 along its circumference, and all the fixing holes 241 penetrate the other side of the bracket 2. That is, during assembly, the worker can align the worm gear bearing cap 12 with the limiting groove 23 and insert it into it to achieve initial positioning of the bracket 2 and the housing 1. The bracket 2 and the housing 1 are connected and fixed by screws passing through the fixing hole 241 and the threaded hole on the housing 1. It is worth mentioning that a clearance notch 242 is provided on the side wall of the protrusion 24, which is connected to the limiting groove 23. The purpose of the clearance notch 242 is to make way for the gear bearing cover 15, so as to prevent the worm gear bearing cover 12 from not being able to be inserted into the limiting groove 23 due to the presence of the gear bearing cover 15 during the docking process. In addition, the bracket 2 is specifically arranged vertically, and a clearance groove 25 adjacent to the protrusion 24 is also provided at the top of the side plate with the protrusion 24. The setting of the clearance groove 25 can ensure that the motor 13 can be inserted into it during the assembly process, thereby preventing interference between the motor 13 and the bracket 2.

[0029] Combination Figure 6 The bracket 2 has connecting parts 21 protruding outward from the housing 1 on both sides. Both connecting parts 21 are plate-shaped and arranged opposite each other. Each connecting part 21 has a connecting hole 211. The top of the bracket 2 is formed between the two connecting parts 21, and a long strip-shaped reinforcing plate 26 is formed. Each connecting part 21 and the side of the bracket 2 facing away from the housing 1 have triangular reinforcing ribs 212. The reinforcing plate 26 and the side of the bracket 2 facing away from the housing 1 have several triangular reinforcing ribs 261, which are spaced apart along the length of the reinforcing plate 26. On one side of the bracket 2, below one of the connecting parts 21, there is a connecting part 22 protruding outward from the housing 1, and a connecting hole 221 is provided on the connecting part 22. The bracket 2 is screwed to the column of the machine tool through the connecting holes 211 of the two connecting parts 21 and screws, and the connecting holes 221 of the connecting part 22 and screws.

[0030] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0031] Although this document frequently uses terms such as housing 1, worm gear 11, stepped hole 111, worm gear bearing cover 12, motor 13, secondary drive wheel 14, positioning part 141, gear bearing cover 15, secondary driven wheel 16, clamping worm 17, output shaft 18, front deep groove ball bearing 19, rear deep groove ball bearing 10, bracket 2, connecting part 21, connecting hole one 211, reinforcing rib one 212, connecting part two 22, connecting hole two 221, limiting groove 23, protrusion 24, fixing hole 241, clearance notch 242, clearance groove 25, reinforcing plate 26, reinforcing rib two 261, front adjusting shim 3, and rear adjusting shim 4, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A worm gear helical gear reducer for a tool magazine, comprising a housing (1) internally rotatably connected to a worm gear (11), wherein a worm gear bearing cap (12) is screwed onto the housing (1) to enclose the worm gear (11), characterized in that, The tool magazine worm gear helical gear reducer also includes a bracket (2), which has a connecting part one (21) and a connecting part two (22) protruding from the housing (1) and a limiting groove (23), the worm gear bearing cover (12) is embedded in the limiting groove (23), and the bracket (2) and the housing (1) are fixed by fastener screws.

2. The worm gear helical reducer for a tool magazine according to claim 1, characterized in that, The bracket (2) is plate-shaped. One side of the plate has a protruding part (24) protruding outward along the circumferential direction. The limiting groove (23) is formed in the protruding part (24). The protruding part (24) has a plurality of fixing holes (241) that penetrate the other side of the plate of the bracket (2) along the circumferential direction. The plurality of fixing holes (241) are spaced apart along the circumferential direction of the protruding part (24).

3. The worm gear helical reducer for a tool magazine according to claim 2, characterized in that, The outer wall of the protrusion (24) is provided with a clearance notch (242), and the clearance notch (242) is connected to the limiting groove (23).

4. The worm gear helical reducer for a tool magazine according to claim 2 or 3, characterized in that, The bracket (2) has a relief groove (25) on one side plate facing the housing (1) that is adjacent to the protrusion (24). The top of the housing (1) is connected to a motor (13) whose drive shaft is connected to the worm gear (11). The motor (13) is embedded in the relief groove (25).

5. The worm gear helical reducer for a tool magazine according to claim 4, characterized in that, The housing (1) is fixedly provided with a front deep groove ball bearing (19) and a rear deep groove ball bearing (10). A clamping worm (17) is rotatably connected to the drive shaft of the motor (13) and meshes with the worm gear (11). The clamping worm (17) is respectively engaged with the inner rings of the front deep groove ball bearing (19) and the rear deep groove ball bearing (10). A front adjusting shim (3) is detachably connected to the side of the front deep groove ball bearing (19) opposite to the rear deep groove ball bearing (10) in the housing (1). A rear adjusting shim (4) is detachably connected to the side of the rear deep groove ball bearing (10) opposite to the front deep groove ball bearing (19) in the housing (1).

6. The worm gear helical reducer for a tool magazine according to claim 1, 2, or 3, characterized in that, The bracket (2) is a rectangular plate and is arranged vertically. The first connecting part (21) has two pieces and is located on both sides of the top of the bracket (2) and is arranged opposite to each other. Each first connecting part (21) has a first connecting hole (211). The second connecting part (22) is formed on one side of the bracket (2) and is located below one of the first connecting parts (21). The second connecting part (22) has a second connecting hole (221).

7. The worm gear helical reducer for a tool magazine according to claim 6, characterized in that, Each of the connecting parts (21) and the side plate of the bracket (2) facing away from the housing (1) has a reinforcing rib (212), the top of the bracket (2) has a reinforcing plate (26) fixedly connected to the two connecting parts (21), and the reinforcing plate (26) and the side plate of the bracket (2) facing away from the housing (1) have a reinforcing rib (261).

8. The worm gear helical reducer for a tool magazine according to claim 4, characterized in that, A secondary drive wheel (14) is rotatably connected inside the housing (1). The outer side wall of the secondary drive wheel (14) has a circumferentially protruding positioning part (141). The worm wheel (11) is sleeved on the secondary drive wheel (14) and abuts against the positioning part (141). The worm wheel (11) has a stepped hole (111) that passes through its two sides. The worm wheel (11) and the positioning part (141) are screwed together and locked by bolts passing through the stepped hole (111) and the positioning part (141).

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