Deviation detection equipment for gear hobbing machine

Abstract

The invention relates to the technical field of gear hobbing machine deviation detection, and discloses a deviation detection device for a gear hobbing machine, which comprises a gear hobbing machine shell, a power gear and a screw tap rod, and is characterized in that the power gear is rotatably connected to the interior of the gear hobbing machine shell, and the screw tap rod is movably connected to the outer wall of the power gear; a fixing assembly facilitating fixation and disassembly of the power gear and the screw tap rod is arranged between the power gear and the screw tap rod, a detection assembly used for detecting deviation generated in the working process of the screw tap rod is arranged in the gear hobbing machine shell, and through the arrangement of the detection assembly, the purposes of detecting and reminding the position deviation of the screw tap rod are achieved; compared with gear hobbing machine deviation detection equipment in the market, the device detects the position deviation condition of the screw tap rod in real time in the working process of the gear hobbing machine, the screw tap rod does not need to be transferred to independent detection equipment for off-line detection, immediate feedback and monitoring are achieved, the position deviation of the screw tap rod is found in time, and the working efficiency is improved. And an operator can immediately take measures.

Description

Technical Field

[0001] The invention relates to the field of gear hobbing machine deviation detection, and in particular to a deviation detection device for a gear hobbing machine. Background Art

[0002] The deviation detection equipment of the gear hobbing machine mainly detects the gears processed by the gear hobbing machine to determine whether the various parameters of the gears, such as pitch, tooth shape, tooth direction, etc., meet the design requirements and the accuracy range of relevant standards, and promptly discover the deviations generated during the processing so that measures can be taken to adjust and correct them, thereby ensuring the processing accuracy of the gears.

[0003] During the long-term use of the gear hobbing machine, the tool, fixture, workbench, guide rail and other components will be worn due to frequent cutting, friction and collision, such as wear of the cutting edge of the tool, wear of the positioning surface of the fixture, wear of the guide surface of the guide rail, etc. These wears will cause the position of the tap to deviate during the processing. The deviation of the tap will cause the parameters such as the processed gear tooth shape, pitch, tooth direction, etc. to not meet the design requirements, resulting in reduced gear accuracy and affecting the transmission performance and service life of the gear. The deviation detection equipment of the gear hobbing machine on the market is usually set as a separate individual, and it is impossible to perform real-time detection during the operation of the gear hobbing machine. Since it is impossible to detect in real time, it is necessary to transfer the workpiece to a separate detection equipment for detection after the gear hobbing machine is completed, which increases the intermediate operation links and time. , which reduces the overall production efficiency and prolongs the production cycle of the product. At the same time, in the case of non-real-time detection, if deviations have occurred during the gear hobbing process but cannot be discovered and adjusted in time, a batch of products will have the same deviation problem, thereby increasing the number of defective products. On the one hand, the output of a large number of defective products increases material costs; on the other hand, separate detection equipment and additional detection operations, product reprocessing or scrapping will increase production costs. At the same time, because the deviation cannot be detected in real time during the processing process, there is a lag in the feedback on the processing status and problems of the gear hobbing machine. When the problem is discovered, a long time has passed, and it is difficult to trace the specific links and causes of the problem, which is not conducive to timely adjustment of process parameters and equipment status, and causes difficulties for subsequent production improvements and optimizations.

[0004] The gear hobbing machines on the market usually use screws to fix the tap rods. When using screws to fix, the screws need to be tightened or loosened one by one. The operation steps are cumbersome and time-consuming, which reduces the efficiency of equipment maintenance, replacement of tap rods and other operations. At the same time, during the disassembly and assembly process, the staff needs to use tools such as screwdrivers, and need to operate in a relatively narrow or inconvenient space, which increases the difficulty and inconvenience of operation. In addition, during multiple disassembly and assembly, the threads of the screws will wear and slip, resulting in a decrease in the fixing effect, or even an inability to effectively fix, affecting the normal operation and processing accuracy of the equipment. At the same time, when the tap rod needs to be replaced for processing gears of different specifications, the traditional screw fixing method takes a long time to disassemble and assemble, which increases the downtime of the equipment, thereby reducing the overall production efficiency of the gear hobbing machine.

[0005] Therefore, it is necessary to provide a deviation detection device for a gear hobbing machine, aiming to solve the above problems. Summary of the invention

[0006] In view of the deficiencies in the prior art, an object of the present invention is to provide a deviation detection device for a gear hobbing machine.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a deviation detection device for a gear hobbing machine, comprising a gear hobbing machine housing, a power gear, and a tap rod, wherein the power gear is rotatably connected to the inside of the gear hobbing machine housing, and the tap rod is movably connected to the outer wall of the power gear, and a fixing component is arranged between the power gear and the tap rod for facilitating the fixing and disassembly of the two, and a detection component for detecting deviations generated during the working process of the tap rod is arranged inside the gear hobbing machine housing.

[0008] Preferably, the fixing assembly includes a limit pin, which is slidably connected to one end of the power gear close to the tap rod, a cylindrical slide groove is provided inside the limit pin, a pressing rod is slidably connected inside the cylindrical slide groove, and one end of the pressing rod close to the cylindrical slide groove is symmetrically fixedly connected to a U-shaped positioning column, and the outer walls of the two U-shaped positioning columns are rotatably connected to interference blocks.

[0009] Preferably, the fixing assembly also includes a first return spring, which is arranged inside the cylindrical slide groove, one end of the first return spring is fixedly connected to the outer wall of the pressing rod, and the other end of the first return spring is fixedly connected to the inner wall of the limiting pin, and the end of the limiting pin away from the first return spring is rotatably connected to a rotating ring, the outer wall of the limiting pin is threadedly connected to a threaded ring, and the outer wall of the threaded ring is fixedly connected to an anti-slip rod in a ring-shaped distribution.

[0010] Preferably, the detection component includes a positioning ring, which is fixedly connected to the interior of the gear hobbing machine housing, and the interior of the positioning ring is slidably connected with a cylindrical hollow slider in a ring-shaped distribution, and the interior of the cylindrical hollow slider is slidably connected with a limit rod, and a second return spring is fixedly connected between the limit rod and the cylindrical hollow slider, and the outer wall of the cylindrical hollow slider is sleeved with a first conductive sheet.

[0011] Preferably, the detection assembly also includes a detection block, which is fixedly connected to one end of the cylindrical hollow slider away from the limit rod, and a second conductive sheet is arranged in a ring-shaped manner inside the positioning ring, and an alarm light is arranged inside the gear hobbing machine housing.

[0012] Preferably, the limiting pin slides inside both the power gear and the tap rod at the same time, and a threaded groove is provided on the outer wall of the limiting pin, and the abutment block is slidably connected to the inside of the cylindrical slide groove.

[0013] Preferably, one end of the limiting rod away from the cylindrical hollow slider is fixedly connected to the inside of the positioning ring.

[0014] Preferably, the cylindrical hollow slider is electrically connected to a power source used by the equipment, and the second conductive sheet is electrically connected to an alarm light.

[0015] The present invention provides a deviation detection device for a gear hobbing machine. Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. Through the setting of the detection component, during the working process of the gear hobbing machine, long-term gear processing will cause the position of the tap rod to deviate, and then the tap rod will deviate during rotation. Subsequently, the deviated tap rod will gradually conflict with the detection block, and the detection block that the deviated tap rod conflicts with will gradually compress the second reset spring. At the same time, the detection block will drive the first conductive sheet to gradually conflict with the second conductive sheet. When the first conductive sheet and the second conductive sheet conflict with each other, the second conductive sheet will light up the alarm light, thereby achieving the purpose of detecting and reminding the deviation of the position of the tap rod. Compared with the gear hobbing machine deviation detection equipment on the market, this device can detect the position deviation of the tap rod in real time during the working process of the gear hobbing machine. In this case, there is no need to transfer the tap rod to a separate testing device for offline testing, which realizes instant feedback and monitoring, and timely detects the position deviation of the tap rod. The operator can take immediate measures, such as stopping for adjustment, replacing parts, etc., which helps to prevent the production of a large number of unqualified products, thereby improving the processing quality and precision of the gear. Through real-time monitoring and timely response, intervention can be carried out as soon as the deviation occurs, reducing the large number of defective products caused by the failure to detect the deviation in time, reducing the defective rate and scrap rate, and quickly detecting the deviation and solving the problem, reducing the rework and reprocessing caused by the subsequent discovery of the deviation, shortening the production cycle, and improving production efficiency.

[0017] Secondly, when the tap rod has position deviation, it can promptly remind the operator to deal with it, avoiding damage to other parts of the gear hobbing machine due to further development of the deviation and extending the service life of the equipment. At the same time, this real-time detection and automatic alarm function improves the automation and intelligence level of the gear hobbing machine and reduces dependence on frequent manual inspections.

[0018] 2. Through the setting of the fixing component, the threaded ring is rotated by the anti-slip rod, so that the threaded ring and the resistance block simultaneously resist the tap rod and the power gear, thereby quickly fixing the tap rod and the power gear. Compared with the traditional screw fixing method, the anti-slip rod is used to rotate the threaded ring to achieve fixation, and the operation steps are relatively simple. Compared with the traditional method of tightening or loosening the screws one by one, it can greatly shorten the disassembly and assembly time, improve work efficiency, and reduce the length of equipment downtime for maintenance or replacement of parts. At the same time, the threaded ring and the resistance block work together to resist and fix, which can provide more uniform and stable clamping force and fixing force, avoiding the problem of loose fixation caused by loosening or uneven tightening of individual screws in screw fixing, thereby better maintaining the relative position stability of the tap rod and the power gear during work, ensuring processing accuracy.

[0019] Secondly, operators do not need to use tools such as screwdrivers to perform multiple screw disassembly and assembly operations, which reduces the difficulty of operation for operators. At the same time, during repeated disassembly and assembly of traditional screws, the screws and screw holes are prone to wear and thread stripping, while this new fixing method avoids frequent screw disassembly and assembly, reduces the loss of related components, and extends the service life and maintenance cycle of equipment components. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the position relationship of the overall device of the present invention;

[0021] Figure 2 It is a cross-sectional view of the overall device of the present invention;

[0022] Figure 3 It is a schematic diagram of the position relationship of the power gear, the tap rod and the fixing assembly of the present invention;

[0023] Figure 4 It is a schematic diagram of the position relationship between the tap rod and the fixing assembly of the present invention;

[0024] Figure 5 For the present invention Figure 4 A magnified view of the structure at center;

[0025] Figure 6 It is a schematic diagram of the position relationship of the columnar slide groove, the pressing rod, the U-shaped positioning column and the abutment block of the present invention;

[0026] Figure 7 It is a schematic diagram of the positional relationship among the gear hobbing machine housing, the tap rod and the detection assembly of the present invention;

[0027] Figure 8 This is a schematic diagram of the position relationship of the detection components of the present invention;

[0028] Fig. 9 For the present invention Figure 8 A magnified view of the structure at B in the middle;

[0029] Fig.10 It is a schematic diagram of the position relationship among the limit rod, the second return spring and the first conductive sheet of the present invention.

[0030] Reference numerals: 11, gear hobbing machine housing; 12, power gear; 13, tap rod;

[0031] The fixing assembly includes: 21, a limiting pin; 22, a cylindrical slide groove; 23, a pressing rod; 24, a U-shaped positioning column; 25, a resisting block; 26, a first return spring; 27, a rotating ring; 28, a threaded ring; 29, an anti-slip rod;

[0032] The detection component includes: 31, a positioning ring; 32, a cylindrical hollow slider; 33, a limit rod; 34, a second return spring; 35, a first conductive sheet; 36, a detection block; 37, a second conductive sheet; 38, an alarm light. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0034] In the description of the present invention, the terms "center", "lateral", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing 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, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0035] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0036] Implementation example Figures 1 to 10As shown, a deviation detection device for a gear hobbing machine provided by an embodiment of the present invention comprises a gear hobbing machine housing 11, a power gear 12, and a tap rod 13. The power gear 12 is rotatably connected to the inside of the gear hobbing machine housing 11, and the tap rod 13 is movably connected to the outer wall of the power gear 12. A fixing component is arranged between the power gear 12 and the tap rod 13 for facilitating the fixing and disassembly of the two. A detection component for detecting the deviation of the tap rod 13 during the working process is arranged inside the gear hobbing machine housing 11.

[0037] The fixing assembly includes a limit pin 21, which is slidably connected to one end of the power gear 12 close to the tap rod 13. A cylindrical slide groove 22 is provided inside the limit pin 21, and a pressing rod 23 is slidably connected inside the cylindrical slide groove 22. One end of the pressing rod 23 close to the cylindrical slide groove 22 is symmetrically fixedly connected to a U-shaped positioning column 24, and the outer walls of the two U-shaped positioning columns 24 are rotatably connected to a resistance block 25.

[0038] The fixing assembly also includes a first return spring 26, which is arranged inside the cylindrical slide groove 22, one end of the first return spring 26 is fixedly connected to the outer wall of the pressing rod 23, and the other end of the first return spring 26 is fixedly connected to the inner wall of the limiting nail 21, and the end of the limiting nail 21 away from the first return spring 26 is rotatably connected to a rotating ring 27, the outer wall of the limiting nail 21 is threadedly connected to a threaded ring 28, and the outer wall of the threaded ring 28 is fixedly connected to an anti-slip rod 29 in a ring-shaped distribution.

[0039] The detection component includes a positioning ring 31, which is fixedly connected to the inside of the gear hobbing machine housing 11. The inside of the positioning ring 31 is slidably connected with a cylindrical hollow slider 32 in an annular shape. The inside of the cylindrical hollow slider 32 is slidably connected with a limit rod 33. A second return spring 34 is fixedly connected between the limit rod 33 and the cylindrical hollow slider 32. The outer wall of the cylindrical hollow slider 32 is sleeved with a first conductive sheet 35.

[0040] The detection assembly also includes a detection block 36, which is fixedly connected to one end of the cylindrical hollow slider 32 away from the limit rod 33. The interior of the positioning ring 31 is provided with a second conductive sheet 37 in an annular shape, and the interior of the gear hobbing machine housing 11 is provided with an alarm light 38.

[0041] The limiting pin 21 slides inside both the power gear 12 and the tap rod 13 at the same time, and a threaded groove is provided on the outer wall of the limiting pin 21, so that the threaded ring 28 can rotate along the threaded groove of the limiting pin 21, and the resistance block 25 is slidably connected to the inside of the cylindrical slide groove 22, so that the resistance block 25 can move to the inside of the cylindrical slide groove 22.

[0042] One end of the limiting rod 33 away from the cylindrical hollow slider 32 is fixedly connected to the inside of the positioning ring 31 , so that the cylindrical hollow slider 32 always slides inside the positioning ring 31 .

[0043] There is an electrical connection between the cylindrical hollow slider 32 and the power supply used by the device, so that when the power supply of the device is powered on, the cylindrical hollow slider 32 can energize the first conductive sheet 35, and there is an electrical connection between the second conductive sheet 37 and the alarm light 38, so that when the second conductive sheet 37 is powered on, the alarm light 38 can be powered on and light up.

[0044] When the staff needs to fix the power gear 12 and the tap rod 13, the staff first holds the rotating ring 27 to make the limit pin 21 slide along the inside of the power gear 12 and the tap rod 13. After the resistance block 25 moves to the side of the power gear 12 away from the tap rod 13, the staff first pulls the limit pin 21 in the opposite direction, so that the limit pin 21 drives the resistance block 25 to resist the outer wall of the power gear 12. Then the staff starts to rotate the threaded ring 28 in the opposite direction through the anti-slip rod 29, so that the threaded ring 28 gradually resists the outer wall of the tap rod 13 along the outer wall of the limit pin 21. When the threaded ring 28 resists the outer wall of the tap rod 13, the threaded ring 28 and the resistance block 25 both resist the outer wall of the power gear 12 and the tap rod 13, thereby achieving the purpose of quickly fixing the tap rod 13.

[0045] Working principle: In the initial state, the first return spring 26 and the second return spring 34 are not compressed, the first conductive sheet 35 does not conflict with the second conductive sheet 37, the alarm light 38 is not powered on, and the conflict block 25 conflicts with the power gear 12 on the side away from the U-shaped positioning column 24.

[0046] During operation, if the staff needs to disassemble the tap rod 13, the staff first needs to reversely rotate the threaded ring 28 through the anti-slip rod 29. Since the outer wall of the limiting pin 21 is provided with a threaded groove, the threaded ring 28 then slides along the threaded groove of the outer wall of the limiting pin 21, so that the gap between the threaded ring 28 and the abutment block 25 is slightly larger than the thickness of the power gear 12 and the tap rod 13.

[0047] At this time, the pressing rod 23 is pressed inside the cylindrical slide groove 22, and then the pressing rod 23 compresses the first return spring 26 into the cylindrical slide groove 22. At the same time, the pressing rod 23 drives the U-shaped positioning column 24 to move toward the side of the limiting pin 21 away from the rotating ring 27, and the U-shaped positioning column 24 will drive the outer wall of the interference block 25 to interfere with the limiting pin 21, and then the interference block 25 gradually moves to the inside of the cylindrical slide groove 22. At this time, the end of the interference block 25 away from the U-shaped positioning column 24 cannot interfere with the outer wall of the power gear 12. Then the staff pulls the limiting pin 21 away from the power gear 12 and the tap rod 13 through the rotating ring 27. Because the limiting pin 21 slides inside both the power gear 12 and the tap rod 13 at the same time, the limiting pin 21 is finally disengaged from the inside of the power gear 12 and the tap rod 13, thereby achieving the purpose of quickly releasing the fixed tap rod 13.

[0048] After the limiting pin 21 is separated from the inside of the power gear 12 and the tap rod 13, the first return spring 26 elastically stretches to push the pressing rod 23 to slide along the inside of the cylindrical slide groove 22, and the pressing rod 23 drives the U-shaped positioning column 24 to move synchronously toward the rotating ring 27. Therefore, at this time, the limiting pin 21 drives the resistance block 25 to separate from the inside of the power gear 12 and the tap rod 13, and the movement of the U-shaped positioning column 24 will drive the resistance block 25 to rotate around the U-shaped positioning column 24, and then the end of the resistance block 25 away from the U-shaped positioning column 24 gradually moves out of the cylindrical slide groove 22 for reset.

[0049] When the staff needs to fix the power gear 12 and the tap rod 13, in contrast to the above movement process, the staff first holds the rotating ring 27 to make the limit pin 21 slide along the inside of the power gear 12 and the tap rod 13. After the resistance block 25 moves to the side of the power gear 12 away from the tap rod 13, the staff first pulls the limit pin 21 in the opposite direction, so that the limit pin 21 drives the resistance block 25 to resist the outer wall of the power gear 12. Then the staff begins to rotate the threaded ring 28 in the opposite direction through the anti-slip rod 29, so that the threaded ring 28 gradually resists the outer wall of the tap rod 13 along the outer wall of the limit pin 21. When the threaded ring 28 resists the outer wall of the tap rod 13, the threaded ring 28 and the resistance block 25 both resist the outer wall of the power gear 12 and the tap rod 13, thereby achieving the purpose of quickly fixing the tap rod 13.

[0050] During the operation of the gear hobbing machine, the staff needs to start the equipment and use the power supply first, and then the power gear 12 will gradually drive the tap rod 13 to start rotating. If the position of the tap rod 13 deviates, the outer wall of the offset tap rod 13 will gradually contact the detection block 36, and then the detection block 36 will drive the cylindrical hollow slider 32 to gradually slide along the outer wall of the limit rod 33, and the cylindrical hollow slider 32 will synchronously gradually compress the second return spring 34 toward the limit rod 33;

[0051] Since the cylindrical hollow slider 32 is electrically connected to the power supply of the equipment, and a conductive sheet 35 is sleeved on the outer side of the cylindrical hollow slider 32, after the power supply of the equipment is powered on, the cylindrical hollow slider 32 energizes the first conductive sheet 35. Meanwhile, during the movement of the cylindrical hollow slider 32 toward the positioning ring 31, the cylindrical hollow slider 32 drives the first conductive sheet 35 to move toward the second conductive sheet 37. When the first conductive sheet 35 collides with the second conductive sheet 37, since the second conductive sheet 37 is electrically connected to the alarm light 38, the alarm light 38 is powered on and lights up after the second conductive sheet 37 is powered on, thereby alerting the staff that the tap rod 13 is offset.

[0052] After the staff discovers that the tap rod 13 has a fault, they first need to turn off the power supply of the equipment, and the cylindrical hollow slider 32 will be resisted by the second return spring 34 to move away from the limit rod 33. Finally, after the staff replaces the new tap rod 13, the cylindrical hollow slider 32 can still perform real-time detection of the tap rod 13 through the detection block 36.

[0053] For those skilled in the art, although several embodiments and examples of the present invention are described, these embodiments and examples are presented as examples and are not intended to limit the scope of the invention. These new embodiments can be implemented in various other ways, and various omissions, substitutions, and changes can be made without departing from the scope of the subject matter of the invention. These embodiments and their variations are included in the scope and subject matter of the invention, and are included in the invention described in the claims and the scope of their equivalents.

[0054] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A deviation detection device for a gear hobbing machine, comprising a gear hobbing machine housing (11), a power gear (12), and a tap rod (13), wherein the power gear (12) is rotatably connected to the inside of the gear hobbing machine housing (11), and the tap rod (13) is movably connected to the outer wall of the power gear (12), characterized in that: A fixing assembly is provided between the power gear (12) and the tap rod (13) for facilitating the fixing and disassembly of the two, and a detection assembly is provided inside the gear hobbing machine housing (11) for detecting deviations of the tap rod (13) during operation.

2. A deviation detection device for a gear hobbing machine according to claim 1, characterized in that: The fixing assembly comprises a limit pin (21), the limit pin (21) is slidably connected to one end of the power gear (12) close to the tap rod (13), a columnar slide groove (22) is provided inside the limit pin (21), a pressing rod (23) is slidably connected inside the columnar slide groove (22), a U-shaped positioning column (24) is symmetrically fixedly connected to one end of the pressing rod (23) close to the columnar slide groove (22), and the outer walls of the two U-shaped positioning columns (24) are rotatably connected to a resisting block (25).

3. A deviation detection device for a gear hobbing machine according to claim 2, characterized in that: The fixing assembly also includes a first return spring (26), which is arranged inside the cylindrical slide groove (22), one end of the first return spring (26) is fixedly connected to the outer wall of the pressing rod (23), and the other end of the first return spring (26) is fixedly connected to the inner wall of the limiting pin (21), and the end of the limiting pin (21) away from the first return spring (26) is rotatably connected to a rotating ring (27), the outer wall of the limiting pin (21) is threadedly connected to a threaded ring (28), and the outer wall of the threaded ring (28) is annularly distributed and fixedly connected to an anti-slip rod (29).

4. The deviation detection device for a gear hobbing machine according to claim 1, characterized in that: The detection component comprises a positioning ring (31), the positioning ring (31) is fixedly connected to the inside of the gear hobbing machine housing (11), the inside of the positioning ring (31) is slidably connected with a cylindrical hollow slider (32) in an annular distribution, the inside of the cylindrical hollow slider (32) is slidably connected with a limit rod (33), a second return spring (34) is fixedly connected between the limit rod (33) and the cylindrical hollow slider (32), and the outer wall of the cylindrical hollow slider (32) is sleeved with a first conductive sheet (35).

5. The deviation detection device for a gear hobbing machine according to claim 4, characterized in that: The detection assembly also includes a detection block (36), the detection block (36) is fixedly connected to one end of the cylindrical hollow slider (32) away from the limit rod (33), the interior of the positioning ring (31) is provided with second conductive sheets (37) distributed in an annular shape, and the interior of the gear hobbing machine housing (11) is provided with an alarm light (38).

6. The deviation detection device for a gear hobbing machine according to claim 3, characterized in that: The limiting pin (21) slides inside the power gear (12) and the tap rod (13) at the same time, and a threaded groove is provided on the outer wall of the limiting pin (21), and the abutment block (25) is slidably connected to the inside of the columnar slide groove (22).

7. The deviation detection device for a gear hobbing machine according to claim 4, characterized in that: One end of the limiting rod (33) away from the cylindrical hollow slider (32) is fixedly connected to the inside of the positioning ring (31).

8. The deviation detection device for a gear hobbing machine according to claim 5, characterized in that: The cylindrical hollow slider (32) is electrically connected to a power source used by the equipment, and the second conductive sheet (37) is electrically connected to an alarm light (38).

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