A tooth matching clamp for long keyway position degree of shaft parts

Abstract

The application provides a tooth matching clamp for long keyway position degree of shaft parts, which comprises a tooth matching error prevention mechanism, the tooth matching error prevention mechanism comprises a sliding block, the sliding block is installed on a tooth matching seat and can reciprocate in the longitudinal direction; a tooth matching gauge is also installed on the tooth matching seat, and the central axis of the tooth matching gauge is arranged in the longitudinal direction. The longitudinal rear end of the sliding block is provided with an error prevention extension rod, and the error prevention extension rod is arranged in the transverse direction. The tooth matching error prevention mechanism further comprises an error prevention tooth matching seat, the error prevention tooth matching seat is installed on the error prevention extension rod, and an error prevention tooth matching gauge measuring head is further arranged in the error prevention tooth matching seat; the central axis of the error prevention tooth matching gauge measuring head is arranged in the longitudinal direction. The main function of the tooth matching gauge in the device is to match the teeth in the machining process, so as to ensure the accuracy of the long keyway position degree. The main function of the tooth matching error prevention mechanism is to prevent tooth matching errors, and the tooth matching error prevention mechanism can play the role of pre-judgment error prevention.

Description

Technical Field

[0001] This invention belongs to the field of transmission technology, and relates to intermediate shafts, specifically to a gear-aligning fixture for the positional accuracy of long keyways in shaft-type parts. Background Technology

[0002] Due to its high load-bearing capacity and low failure rate, the dual intermediate shaft transmission has become the main type of transmission used in heavy-duty trucks in China. The dual intermediate shaft transmission has a special design structure, and the core technology is gear meshing. The purpose of gear meshing is to ensure that the drive gears of the two intermediate shafts mesh correctly with the main shaft gear at the same time, so that the main shaft gear is coaxial with the main shaft and the load is evenly distributed.

[0003] The manufacturing precision of the intermediate shaft, especially the gear precision, affects the load-bearing capacity of the entire transmission, thus impacting its service life. The positional accuracy of the long keyway on the intermediate shaft body is guaranteed based on the pitch circle tooth width of one gear ring on the intermediate shaft body. Therefore, the positional accuracy of the long keyway on the intermediate shaft body is even more critical. Ensuring the stability of the long keyway positional accuracy during machining has become a crucial issue that urgently needs to be addressed. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to provide a gear-aligning fixture for improving the positional accuracy of long keyways on shaft-type parts, thereby solving the technical problem that the positional accuracy of long keyways on intermediate shafts in dual intermediate shaft structure transmissions needs further improvement.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A tooth-aligning fixture for the positional accuracy of long keyways on shaft parts includes a tooth-aligning anti-misalignment mechanism. The tooth-aligning anti-misalignment mechanism includes a slider, which is mounted on a tooth-aligning seat and is capable of longitudinal reciprocating motion. A tooth-aligning gauge is also mounted on the tooth-aligning seat, and the central axis of the tooth-aligning gauge is arranged along the longitudinal direction.

[0007] The slider is provided with a fault-prevention extension rod at its longitudinal rear end, and the fault-prevention extension rod is arranged along the transverse direction.

[0008] The tooth alignment and error prevention mechanism also includes an error-prevention tooth alignment seat, which is installed on the error-prevention extension rod. An error-prevention tooth alignment gauge probe is also provided inside the error-prevention tooth alignment seat; the central axis of the error-prevention tooth alignment gauge probe is arranged along the longitudinal direction.

[0009] The present invention also has the following technical features:

[0010] Preferably, the error-proof extension rod includes an error-proof extension rod body, on which a longitudinally penetrating error-proof tooth seat strip positioning hole is provided near the right end. An extension rod positioning block is also integrally and horizontally provided on the left end face of the error-proof extension rod body. Multiple extension rod fixing screw holes are provided on the left end face of the error-proof extension rod body along the transverse direction. The multiple extension rod fixing screw holes are arranged on both sides of the extension rod positioning block.

[0011] Specifically, the anti-misalignment gear seat includes an anti-misalignment gear gauge probe positioning seat. The longitudinal front end of the anti-misalignment gear gauge probe positioning seat is also integrally and coaxially provided with an anti-misalignment gear gauge probe through rod and an anti-misalignment gear seat fixing seat. The width of the anti-misalignment gear seat fixing seat is less than or equal to the width of the anti-misalignment gear seat strip positioning hole, and the length of the anti-misalignment gear seat fixing seat is less than the length of the anti-misalignment gear seat strip positioning hole. The length of the anti-misalignment gear seat fixing seat is greater than the width of the anti-misalignment gear seat strip positioning hole.

[0012] The anti-misalignment tooth gauge probe rod is fitted into the anti-misalignment tooth seat strip positioning hole; the anti-misalignment tooth gauge probe positioning seat is located on the longitudinal rear side of the anti-misalignment tooth seat strip positioning hole; the anti-misalignment tooth seat fixing seat is located on the longitudinal front side of the anti-misalignment tooth seat strip positioning hole.

[0013] The anti-misalignment tooth holder fixing seat is also provided with multiple longitudinally penetrating anti-misalignment tooth holder locking screw holes. The anti-misalignment tooth holder is installed on the anti-misalignment extension rod body through the cooperation of the anti-misalignment tooth holder locking screw holes and fastening bolts.

[0014] The anti-misalignment gear holder also has a longitudinally penetrating anti-misalignment gear gauge probe through hole, and an anti-misalignment gear gauge probe is installed in the anti-misalignment gear gauge probe through hole; the side of the anti-misalignment gear gauge probe positioning seat also has an anti-misalignment gear gauge probe locking screw hole, and an anti-misalignment gear gauge probe locking bolt is provided in the anti-misalignment gear gauge probe locking screw, which can lock the anti-misalignment gear gauge probe.

[0015] Specifically, the slider includes a slide plate, and the longitudinal rear end of the slide plate has a transversely through extension rod slot that is open at the longitudinal rear end. The interior of the extension rod slot can fit against the outer surface of the extension rod positioning block. The longitudinal rear end of the slide plate has multiple transversely through extension rod mounting screw holes, and the extension rod mounting screw holes correspond one-to-one with the extension rod fixing screw holes. The anti-misoperation extension rod is installed to the extension rod mounting screw hole of the slide plate through the extension rod fixing screw hole.

[0016] The right side of the middle section of the slide plate is provided with a vertically penetrating groove for mounting limit blocks. A pair of limit blocks are also installed in the groove in a mirror-symmetrical manner. The bottom of the groove is also provided with a second mounting hole for the rotating shaft of the slide plate that is transversely penetrating through it.

[0017] The longitudinal front end of the slide plate is also integrally and vertically provided with a tooth gauge connecting rod. The right end of the tooth gauge connecting rod is connected to the longitudinal front end of the slide plate, and the left end of the tooth gauge connecting rod is provided with a tooth gauge slot that is longitudinally through and open on the left.

[0018] Specifically, the tooth-aligning seat includes a tooth-aligning seat body. A longitudinally penetrating slide plate mounting groove is provided on the right side of the tooth-aligning seat body. The width of the slide plate mounting groove in the vertical direction is equal to the height of the slide plate in the vertical direction, and the depth of the slide plate mounting groove in the horizontal direction is equal to the width of the slide plate in the horizontal direction. The slide plate is mounted on the tooth-aligning seat body through the slide plate mounting groove. The slide plate can also move back and forth longitudinally within the slide plate mounting groove relative to the tooth-aligning seat body.

[0019] The gear holder body has a first mounting hole for a rotary shaft in the middle of the bottom of the slide plate mounting groove along the horizontal direction. A rotary shaft is installed in the first mounting hole for the rotary shaft. The gear holder body also has multiple cover plate mounting screw holes on the upper and lower sides of the vertical direction of the slide plate mounting groove along the horizontal direction.

[0020] The front side of the gear mounting body is also provided with a longitudinally penetrating gear gauge mounting hole. A gear gauge is installed in the gear gauge mounting hole. The gear gauge mounting hole and the first mounting hole of the rotary shaft do not contact each other. The central axis of the gear gauge mounting hole and the central axis of the first mounting hole of the rotary shaft are located on the same horizontal plane.

[0021] Specifically, the bottom left side of the gear setter body is also integrally provided with a left side fixing boss of the gear setter body. Multiple vertically penetrating left side fixing waist-shaped holes are provided on the left side fixing boss of the gear setter body. The multiple left side fixing waist-shaped holes of the gear setter body are evenly distributed along the longitudinal direction. The gear setter body is installed on the machine tool worktable through the multiple left side fixing waist-shaped holes of the gear setter body.

[0022] The bottom right side of the gear-setting body is also integrally provided with a right-side fixing boss. Multiple vertically penetrating right-side fixing waist-shaped holes are provided on the right-side fixing boss. The multiple right-side fixing waist-shaped holes are evenly distributed along the longitudinal direction. The gear-setting body is also mounted on the machine tool worktable through the multiple right-side fixing waist-shaped holes.

[0023] The vertical bottom center of the gear holder body is also provided with a longitudinally penetrating square key mounting groove.

[0024] Specifically, the tooth gauge includes a cylindrical tooth gauge body, and an annular groove is provided on the tooth gauge body near the longitudinal front end along the circumferential direction. The annular groove fits into the tooth gauge bayonet, and the tooth gauge can move back and forth along the longitudinal direction under the drive of the tooth gauge connecting rod.

[0025] The longitudinal rear section of the gear guide body is installed in the gear guide mounting hole. The gear guide body can move back and forth longitudinally relative to the gear guide mounting hole. The longitudinal rear end of the gear guide body protrudes from the longitudinal rear side of the gear guide seat body.

[0026] The longitudinal rear end of the tooth gauge body is also provided with a tooth groove contact surface.

[0027] Specifically, the two limiting blocks are provided with transversely penetrating rotary shaft mounting grooves on their adjacent sides, and the inner surfaces of the two rotary shaft mounting grooves form a rotary shaft mating surface.

[0028] The vertical height of the limiting block is equal to the vertical width of the sliding plate mounting groove, the horizontal thickness of the limiting block is equal to the horizontal depth of the limiting block mounting groove, and the vertical width of the limiting block is equal to the vertical length of the limiting block mounting groove.

[0029] Specifically, the rotary shaft includes an integrally formed shaft section mounted inside the gear seat, an eccentric cam, a shaft section mounted inside the cover plate, and a knob shaft section outside the cover plate.

[0030] The mounting shaft section inside the gear seat, the mounting shaft section inside the cover plate, and the knob shaft section outside the cover plate are coaxially arranged.

[0031] The gear-mounting shaft section is rotatably mounted on the gear-mounting body from right to left in the transverse direction via the second mounting hole and the first mounting hole of the rotary shaft.

[0032] The eccentric cam can contact the contact surface of the rotating shaft during rotation, thereby causing the limiting block to drive the slider to reciprocate longitudinally.

[0033] The shaft section is rotatably installed inside the cover plate.

[0034] The outer knob shaft section of the cover plate is located on the outer side of the cover plate.

[0035] Specifically, the cover plate includes a cover plate body, on which a plurality of transverse through-holes for fixing the cover plate are provided, and the cover plate fixing holes and the cover plate mounting holes correspond one-to-one.

[0036] The cover plate body is also provided with a third mounting hole for a rotating shaft that runs horizontally through it, and a mounting shaft section for the cover plate is rotatably installed in the third mounting hole for the rotating shaft.

[0037] The cover plate body can be installed on the right side of the gear seat body through the cover plate fixing screw holes.

[0038] Compared with the prior art, the present invention has the following technical effects:

[0039] (I) The main function of the gear guide in the device of the present invention is to perform gear alignment during the machining process and ensure the accuracy of the position of the long keyway; the main function of the gear alignment error prevention mechanism is to prevent gear alignment errors and play a role in pre-judgment and error prevention; the device ensures the machining accuracy of the position of the long keyway of the intermediate shaft, and is particularly suitable for situations where the position of the long keyway of the intermediate shaft is required to be based on the width of the tooth groove of the pitch circle of the intermediate shaft body gear ring, and its effect is particularly significant, which can ensure the quality of the intermediate shaft product.

[0040] (II) The device in this invention has a reasonable structure, is easy to operate and has a good clamping effect. It is also flexible and convenient to use, has a wide range of applications, high interchangeability, and can be quickly assembled. Actual verification has shown that it has good results and meets the requirements for mass production processing.

[0041] (III) The device in this invention can ensure that the positional accuracy of the long keyway of the intermediate shaft based on the intermediate shaft gear ring is qualified, solves the positional accuracy requirements of the machining process of the long keyway of the intermediate shaft, can ensure batch processing of the long keyway of the intermediate shaft, and the process is stable. It is of great significance for improving the product quality, processing efficiency and cost control of the intermediate shaft. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the device in this invention during tooth alignment.

[0043] Figure 2 This is a schematic diagram of the overall structure of the device in this invention.

[0044] Figure 3 This is a schematic diagram of the tooth alignment and error prevention mechanism in this invention.

[0045] Figure 4 This is a schematic diagram of the anti-misoperation extension rod in this invention.

[0046] Figure 5 This is a schematic diagram of the slider in this invention.

[0047] Figure 6 This is a schematic diagram of the anti-misalignment tooth holder in the present invention.

[0048] Figure 7 This is a schematic diagram of the anti-misalignment tooth gauge probe in this invention.

[0049] Figure 8 This is a schematic diagram of the tooth holder in this invention.

[0050] Figure 9 This is a schematic diagram of the tetragonal bond in this invention.

[0051] Figure 10 This is a schematic diagram of the tooth gauge structure in this invention.

[0052] Figure 11 This is a schematic diagram of the limiting block in this invention.

[0053] Figure 12 This is a schematic diagram of the structure of the rotary shaft in this invention.

[0054] Figure 13 This is a schematic diagram of the cover plate in this invention.

[0055] The meanings of the labels in the figure are as follows: 1-tooth alignment anti-misalignment mechanism, 2-slider, 3-anti-misalignment extension rod, 4-anti-misalignment tooth alignment seat, 5-tooth alignment seat, 6-tooth alignment gauge, 7-limiting block, 8-rotation shaft, 9-cover plate, 10-anti-misalignment tooth alignment gauge probe, 11-indexing circular tooth groove, 12-long keyway, 13-square key.

[0056] 201-Slide plate, 202-Gear gauge connecting rod, 203-Gear gauge bayonet.

[0057] 301 - Anti-misalignment extension rod body, 302 - Anti-misalignment tooth seat strip positioning hole, 303 - Extension rod positioning block, 304 - Extension rod fixing screw hole.

[0058] 401 - Anti-misalignment gear gauge probe positioning seat; 402 - Anti-misalignment gear gauge probe through rod; 403 - Anti-misalignment gear seat fixing seat; 404 - Anti-misalignment gear seat locking screw hole; 405 - Anti-misalignment gear gauge probe through hole.

[0059] 501 - Gear holder body, 502 - Slide plate mounting slot, 503 - First mounting hole for rotary shaft, 504 - Cover plate mounting screw hole, 505 - Gear gauge mounting hole, 506 - Left side fixing boss of gear holder body, 507 - Left side fixing slot of gear holder, 508 - Right side fixing boss of gear holder body, 509 - Right side fixing slot of gear holder, 510 - Square key mounting slot.

[0060] 601 - Gear gauge body, 602 - Annular groove, 603 - Gear groove mating surface.

[0061] 701 - Rotary shaft mounting groove, 702 - Rotary shaft mating surface.

[0062] 801 - Shaft section installed inside the gear holder; 802 - Eccentric cam; 803 - Shaft section installed inside the cover plate; 804 - Shaft section of the knob outside the cover plate.

[0063] 901 - Cover plate body, 902 - Cover plate fixing screw hole, 903 - Third mounting hole for rotating shaft.

[0064] 20101-Extension rod bayonet, 20102-Extension rod mounting screw hole, 20103-Limit block mounting groove, 20104-Second mounting hole for the rotary shaft.

[0065] 40101 - Anti-misalignment gear gauge probe locking screw hole; 40102 - Anti-misalignment gear gauge probe locking bolt.

[0066] The specific content of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Detailed Implementation

[0067] It should be noted that, unless otherwise specified, all equipment and components in this invention are based on known equipment and components in the prior art. For example, the machine tool table is a known machine tool table, the pitch circular tooth groove is a known pitch circular tooth groove, the long keyway is a known long keyway, and the center inspection standard is a known center inspection standard.

[0068] In this invention, the OXYZ coordinate system is a three-dimensional rectangular coordinate system, with the X-axis pointing horizontally to the right; the Y-axis pointing vertically to the rear; and the Z-axis pointing vertically upwards.

[0069] Following the above technical solutions, specific embodiments of the present invention are given below. It should be noted that the present invention is not limited to the following specific embodiments, and all equivalent modifications made based on the technical solutions of this application fall within the protection scope of the present invention.

[0070] Example:

[0071] This embodiment provides a gear-aligning fixture for the positional accuracy of long keyways on shaft-type parts, such as... Figures 1 to 4 As shown, it includes a tooth alignment and error prevention mechanism 1, which includes a slider 2. The slider 2 is mounted on a tooth alignment seat 5 and can reciprocate longitudinally. A tooth alignment gauge 6 is also mounted on the tooth alignment seat 5, and the central axis of the tooth alignment gauge 6 is arranged longitudinally.

[0072] like Figure 2 As shown, the longitudinal rear end of the slider 2 is provided with an anti-error extension rod 3, which is arranged along the transverse direction.

[0073] like Figures 2 to 7 As shown, the tooth alignment mechanism 1 also includes a tooth alignment seat 4, which is mounted on the tooth alignment extension rod 3. The tooth alignment seat 4 is also equipped with a tooth alignment gauge probe 10. The central axis of the tooth alignment gauge probe 10 is arranged along the longitudinal direction.

[0074] As a preferred embodiment of this invention, such as Figure 4As shown, the error-proof extension rod 3 includes an error-proof extension rod body 301. An error-proof toothed seat strip-shaped positioning hole 302 with longitudinal penetration is provided on the error-proof extension rod body 301 near the right end. An extension rod positioning block 303 is also integrally and horizontally provided on the left end face of the error-proof extension rod body 301. Multiple extension rod fixing screw holes 304 are provided on the left end face of the error-proof extension rod body 301 along the horizontal direction. The multiple extension rod fixing screw holes 304 are arranged on both sides of the extension rod positioning block 303.

[0075] As a preferred embodiment of this invention, such as Figure 6 As shown, the anti-misalignment gear seat 4 includes an anti-misalignment gear gauge probe positioning seat 401. The longitudinal front end of the anti-misalignment gear gauge probe positioning seat 401 is also integrally and coaxially provided with an anti-misalignment gear gauge probe through rod 402 and an anti-misalignment gear seat fixing seat 403. The width of the anti-misalignment gear seat fixing seat 403 is less than or equal to the width of the anti-misalignment gear seat strip positioning hole 302, and the length of the anti-misalignment gear seat fixing seat 403 is less than the length of the anti-misalignment gear seat strip positioning hole 302. The length of the anti-misalignment gear seat fixing seat 403 is greater than the width of the anti-misalignment gear seat strip positioning hole 302.

[0076] like Figure 2 As shown, the anti-misalignment tooth gauge probe rod 402 is fitted into the anti-misalignment tooth seat strip positioning hole 302; the anti-misalignment tooth gauge probe positioning seat 401 is located on the longitudinal rear side of the anti-misalignment tooth seat strip positioning hole 302; and the anti-misalignment tooth seat fixing seat 403 is located on the longitudinal front side of the anti-misalignment tooth seat strip positioning hole 302.

[0077] like Figure 2 and Figure 6 As shown, the anti-misalignment tooth holder fixing seat 403 is also provided with multiple longitudinally penetrating anti-misalignment tooth holder locking screw holes 404. The anti-misalignment tooth holder 4 is installed on the anti-misalignment extension rod body 301 through the cooperation of the anti-misalignment tooth holder locking screw holes 404 and the fastening bolts.

[0078] like Figure 2 and Figure 6 As shown, the anti-misalignment gear seat 4 also has a longitudinally penetrating anti-misalignment gear gauge probe through hole 405, and the anti-misalignment gear gauge probe 10 is installed in the anti-misalignment gear gauge probe through hole 405; the side of the anti-misalignment gear gauge probe positioning seat 401 also has an anti-misalignment gear gauge probe locking screw hole 40101, and an anti-misalignment gear gauge probe locking bolt 40102 is provided in the anti-misalignment gear gauge probe locking screw hole 40101, which can lock the anti-misalignment gear gauge probe 10.

[0079] As a preferred embodiment of this invention, such as Figure 5As shown, the slider 2 includes a slide plate 201. The longitudinal rear end of the slide plate 201 has a transversely through extension rod slot 20101 that is open at the longitudinal rear end. The interior of the extension rod slot 20101 can fit against the outer surface of the extension rod positioning block 303. The longitudinal rear end of the slide plate 201 has multiple transversely through extension rod mounting screw holes 20102. The extension rod mounting screw holes 20102 correspond one-to-one with the extension rod fixing screw holes 304. The anti-misoperation extension rod 3 is installed into the extension rod mounting screw holes 20102 of the slide plate 201 through the extension rod fixing screw holes 304.

[0080] like Figure 5 As shown, a vertically penetrating limit block mounting groove 20103 is provided on the right side of the middle section of the slide plate 201. A pair of limit blocks 7 are also installed in the limit block mounting groove 20103 in a mirror-symmetrical manner. A second mounting hole 20104 for the rotating shaft of the slide plate 201 is also provided at the bottom of the groove of the limit block mounting groove 20103.

[0081] like Figure 5 As shown, the longitudinal front end of the slide plate 201 is also integrally and vertically provided with a tooth gauge connecting rod 202. The right side of the tooth gauge connecting rod 202 is connected to the longitudinal front end of the slide plate 201. The left side of the tooth gauge connecting rod 202 is provided with a longitudinal through tooth gauge slot 203 that is open on the left side.

[0082] As a preferred embodiment of this invention, such as Figure 8 As shown, the tooth setter 5 includes a tooth setter body 501. A longitudinally penetrating slide plate mounting groove 502 is provided on the right side of the tooth setter body 501. The vertical width of the slide plate mounting groove 502 is equal to the vertical height of the slide plate 201, and the horizontal depth of the slide plate mounting groove 502 is equal to the horizontal width of the slide plate 201. The slide plate 201 is mounted on the tooth setter body 501 through the slide plate mounting groove 502. The slide plate 201 can also move back and forth longitudinally within the slide plate mounting groove 502 relative to the tooth setter body 501.

[0083] like Figure 8 As shown, the gear seat body 501 also has a first mounting hole 503 for a rotating shaft in the middle of the bottom of the slide plate mounting groove 502, and a rotating shaft 8 is provided in the first mounting hole 503. The gear seat body 501 also has multiple cover plate mounting screw holes 504 on the upper and lower sides of the vertical direction of the slide plate mounting groove 502 in the horizontal direction.

[0084] like Figure 8As shown, a longitudinally penetrating tooth gauge mounting hole 505 is also provided on the front side of the tooth holder body 501. A tooth gauge 6 is provided in the tooth gauge mounting hole 505. The tooth gauge mounting hole 505 and the first mounting hole 503 of the rotary shaft do not contact each other. The central axis of the tooth gauge mounting hole 505 and the central axis of the first mounting hole 503 of the rotary shaft are located on the same horizontal plane.

[0085] As a preferred embodiment of this invention, such as Figure 8 As shown, a left-side fixing boss 506 is integrally provided on the bottom left side of the gear holder body 501. Multiple vertically penetrating left-side fixing waist-shaped holes 507 are provided on the left-side fixing boss 506. The multiple left-side fixing waist-shaped holes 507 are evenly arranged along the longitudinal direction. The gear holder body 501 is mounted on the machine tool worktable through the multiple left-side fixing waist-shaped holes 507.

[0086] like Figure 8 As shown, a right-side fixing boss 508 is integrally provided on the bottom right side of the gear holder body 501. Multiple vertically penetrating right-side fixing waist-shaped holes 509 are provided on the right-side fixing boss 508. The multiple right-side fixing waist-shaped holes 509 are evenly arranged along the longitudinal direction. The gear holder body 501 is also mounted on the machine tool worktable through the multiple right-side fixing waist-shaped holes 509.

[0087] like Figure 8 As shown, a longitudinally penetrating square key mounting groove 510 is also provided in the middle of the vertical bottom of the tooth holder body 501.

[0088] As a preferred embodiment of this invention, such as Figure 10 As shown, the tooth gauge 6 includes a cylindrical tooth gauge body 601. An annular groove 602 is also provided on the tooth gauge body 601 near the longitudinal front end along the circumferential direction. The annular groove 602 fits into the tooth gauge bayonet 203. The tooth gauge 6 can move back and forth along the longitudinal direction under the drive of the tooth gauge connecting rod 202.

[0089] like Figure 10 As shown, the longitudinal rear section of the gear gauge body 601 is installed in the gear gauge mounting hole 505. The gear gauge body 601 can move back and forth longitudinally relative to the gear gauge mounting hole 505. The longitudinal rear end of the gear gauge body 601 protrudes from the longitudinal rear side of the gear seat body 501.

[0090] like Figure 10 As shown, a tooth groove mating surface 603 is also provided at the longitudinal rear end of the tooth gauge body 601.

[0091] As a preferred embodiment, a horizontally penetrating rotary shaft mounting groove 701 is respectively provided in the middle of the side of the pair of limiting blocks 7 that are close to each other, and the inner surfaces of the two rotary shaft mounting grooves 701 form a rotary shaft mating surface 702.

[0092] The vertical height of the limiting block 7 is equal to the vertical width of the sliding plate mounting groove 502, the horizontal thickness of the limiting block 7 is equal to the horizontal depth of the limiting block mounting groove 20103, and the vertical width of the limiting block 7 is equal to the vertical length of the limiting block mounting groove 20103.

[0093] As a preferred embodiment of this invention, such as Figure 12 As shown, the rotary shaft 8 includes an integrally formed gear seat mounting shaft section 801, an eccentric cam 802, a cover plate mounting shaft section 803, and a cover plate outer knob shaft section 804.

[0094] like Figure 12 As shown, the shaft section 801 installed inside the gear seat, the shaft section 803 installed inside the cover plate, and the knob shaft section 804 outside the cover plate are coaxially arranged.

[0095] The gear setter mounting shaft section 801 is rotatably mounted on the gear setter body 501 from right to left in the transverse direction via the second mounting hole 20104 and the first mounting hole 503 of the rotary shaft.

[0096] During rotation, the eccentric cam 802 can contact the contact surface 702 of the rotating shaft, thereby causing the limit block 7 to drive the slider 2 to reciprocate longitudinally.

[0097] The shaft section 803 is rotatably installed inside the cover plate 9.

[0098] like Figure 2 As shown, the outer knob shaft section 804 of the cover plate is located on the outer side of the cover plate 9.

[0099] As a preferred embodiment of this invention, such as Figure 13 As shown, the cover plate 9 includes a cover plate body 901, and a plurality of transversely penetrating cover plate fixing screw holes 902 are provided on the cover plate body 901. The cover plate fixing screw holes 902 and the cover plate mounting screw holes 504 correspond one-to-one.

[0100] like Figure 13 As shown, the cover plate body 901 is also provided with a third mounting hole 903 for a rotating shaft that runs horizontally through it. The inner mounting shaft section 803 of the cover plate is rotatably installed in the third mounting hole 903.

[0101] like Figure 2 As shown, the cover plate body 901 can be installed on the right side of the gear seat body 501 through the cover plate fixing screw hole 902.

[0102] In this embodiment, a square key 13 is provided in the square key mounting slot 510, and the square key 13 is as follows: Figure 9 As shown.

[0103] In this embodiment, the limiting blocks 7 are used in pairs.

[0104] In this embodiment, when the rotary shaft 8 is pre-tightened, it is ensured that the gear gauge 6 presses against the pitch circle groove 11 of a pre-machined gear ring on the intermediate shaft workpiece at its maximum stroke.

[0105] In this embodiment, after adjusting the position of the anti-misalignment gear gauge probe 10 in the transverse and longitudinal directions, the first groove of the long keyway is machined. After the first groove is machined, the rotary shaft 8 is released, so that the gear gauge 6 and the anti-misalignment gear gauge probe 10 move forward synchronously in the longitudinal direction, i.e., away from the intermediate shaft workpiece. Then, the intermediate shaft workpiece is rotated so that the center of the gear gauge 6 coincides with the center of the tooth width of the pitch circle tooth groove 11. The rotary shaft 8 is pre-tightened, and the second groove of the long keyway is machined. The operation is repeated to complete the overall machining of the long keyway.

[0106] In this embodiment, the middle part of the rotary shaft 8, namely the eccentric cam 802, is designed as an eccentric cam structure. When the rotary shaft 8 is pre-tightened, the cam principle is used to realize the functions of pre-tightening and loosening the workpiece tooth groove. The circumferential rotation of the rotary shaft 8 drives a pair of limit blocks 7 to move back and forth in the longitudinal direction. The back and forth movement of the limit blocks 7 in the longitudinal direction drives the slider 2 to move back and forth in the longitudinal direction. The back and forth movement of the slider 2 in the longitudinal direction drives the tooth gauge 6 to move back and forth in the longitudinal direction. The back and forth movement of the tooth gauge 6 in the longitudinal direction realizes the function of tightening and loosening the pitch circle tooth groove 11 of a tooth ring that has been machined on the intermediate shaft workpiece.

[0107] Simultaneously, the longitudinal back-and-forth movement of the slider 2 can also synchronously drive the longitudinal back-and-forth movement of the anti-error extension rod 3. The longitudinal back-and-forth movement of the anti-error extension rod 3 drives the longitudinal back-and-forth movement of the anti-error alignment seat 4. The longitudinal back-and-forth movement of the anti-error alignment seat 4 drives the longitudinal back-and-forth movement of the anti-error alignment gauge probe 10, thereby causing the longitudinal rear end of the anti-error alignment gauge probe 10 to press against the position of the long keyway 12 to be machined on the intermediate shaft workpiece, preventing misalignment of teeth.

[0108] The adjustment method for the device in actual use in this embodiment is as follows (since this fixture is used in conjunction with a center, the adjustment method for the entire process of machining parts will be described):

[0109] Step 1: Move and fix the hydraulic tailstock of the machine tool worktable (i.e., the CNC vertical machining center worktable), clean the iron filings on the machine tool worktable guide rail, and determine and fix the position of the tailstock according to the axial length of the workpiece.

[0110] Step 2: Check the coaxiality of the left and right centers of the machine tool worktable, and use the center inspection standard to confirm whether the two centers are coaxial. The deviation should not exceed 0.01mm within a range of 300mm.

[0111] Step 3: Adjust the vertical height of the gear setter 5 in the gear setter fixture (i.e., adjust the vertical height of the gear setter 6) and fix it; if the part to be machined is a helical tooth, the gear setter 5 needs to be adjusted according to the process so that the center of the tooth groove contact surface 603 of the gear setter 6 and the center of the left and right centers are on the same horizontal plane; if the part to be machined is a straight tooth, without interfering with the tool, the center of the tooth groove contact surface 603 of the gear setter 6 coincides with the center of the tooth width of the pitch circle tooth groove 11.

[0112] Step 4: Adjust and fix the longitudinal position of the tooth gauge 6 in the tooth setting fixture, pre-tighten the rotary shaft 8, and ensure that the tooth gauge 6 is pressed against the indexing tooth groove 11 when it is at its maximum stroke in the longitudinal direction. Without moving the tooth setting seat 5 of the tooth setting fixture, loosen the tooth gauge 6, move the tooth setting seat 5 of the tooth setting fixture as a whole towards the workpiece direction by 0.1 to 0.15 mm, and fix the tooth setting seat 5 of the tooth setting fixture.

[0113] Step 5: Check the center height of the front and rear end faces of the gear gauge 6 to ensure that the gear gauge 6 is placed horizontally. The deviation should not exceed 0.01mm, and the deviation from the center height of a pre-machined gear ring should not exceed 0.02mm. That is, adjust the position of the anti-misalignment gear gauge probe 10 in the transverse and longitudinal directions. Finally, perform the machining of the long keyway.

Claims

1. A gear-aligning fixture for the positional accuracy of long keyways on shaft-type parts, characterized in that, The device includes a tooth alignment and anti-misalignment mechanism (1), which includes a slider (2), which is mounted on a tooth alignment seat (5) and is capable of longitudinal reciprocating motion; a tooth alignment gauge (6) is also mounted on the tooth alignment seat (5), and the central axis of the tooth alignment gauge (6) is arranged along the longitudinal direction. The slider (2) is provided with a fault-prevention extension rod (3) at its longitudinal rear end, and the fault-prevention extension rod (3) is arranged along the transverse direction; The tooth alignment anti-misalignment mechanism (1) further includes an anti-misalignment tooth alignment seat (4), which is installed on the anti-misalignment extension rod (3). An anti-misalignment tooth alignment gauge probe (10) is also provided inside the anti-misalignment tooth alignment seat (4). The central axis of the anti-misalignment tooth alignment gauge probe (10) is arranged along the longitudinal direction. The error-proof extension rod (3) includes an error-proof extension rod body (301). An error-proof toothed seat strip-shaped positioning hole (302) is provided on the error-proof extension rod body (301) near the right end. An extension rod positioning block (303) is also integrally and horizontally provided on the left end face of the error-proof extension rod body (301). Multiple extension rod fixing screw holes (304) are provided on the left end face of the error-proof extension rod body (301) along the horizontal direction. The multiple extension rod fixing screw holes (304) are arranged on both sides of the extension rod positioning block (303). The anti-misalignment tooth holder (4) includes an anti-misalignment tooth gauge probe positioning seat (401). The longitudinal front end of the anti-misalignment tooth gauge probe positioning seat (401) is also integrally and coaxially provided with an anti-misalignment tooth gauge probe through rod (402) and an anti-misalignment tooth holder fixing seat (403). The width of the anti-misalignment tooth holder fixing seat (403) is less than or equal to the width of the anti-misalignment tooth holder strip positioning hole (302). The length of the anti-misalignment tooth holder fixing seat (403) is less than the length of the anti-misalignment tooth holder strip positioning hole (302). The length of the anti-misalignment tooth holder fixing seat (403) is greater than the width of the anti-misalignment tooth holder strip positioning hole (302). The anti-misalignment tooth gauge probe rod (402) is fitted into the anti-misalignment tooth seat strip positioning hole (302); the anti-misalignment tooth gauge probe positioning seat (401) is located on the longitudinal rear side of the anti-misalignment tooth seat strip positioning hole (302); the anti-misalignment tooth seat fixing seat (403) is located on the longitudinal front side of the anti-misalignment tooth seat strip positioning hole (302); The anti-misalignment tooth holder fixing seat (403) is also provided with a plurality of longitudinally penetrating anti-misalignment tooth holder locking screw holes (404). The anti-misalignment tooth holder (4) is installed on the anti-misalignment extension rod body (301) through the cooperation of the anti-misalignment tooth holder locking screw holes (404) and fastening bolts. The anti-misalignment gear seat (4) is also provided with a longitudinal through hole (405) for the anti-misalignment gear gauge probe, and the anti-misalignment gear gauge probe (10) is installed in the through hole (405); the side of the anti-misalignment gear gauge probe positioning seat (401) is also provided with an anti-misalignment gear gauge probe locking screw hole (40101), and an anti-misalignment gear gauge probe locking bolt (40102) is provided in the anti-misalignment gear gauge probe locking screw hole (40101), which can lock the anti-misalignment gear gauge probe (10); The slider (2) includes a slide plate (201). The longitudinal rear end of the slide plate (201) is provided with a transversely through extension rod slot (20101) that is open at the longitudinal rear end. The interior of the extension rod slot (20101) can fit with the outer surface of the extension rod positioning block (303). The longitudinal rear end of the slide plate (201) is provided with multiple transversely through extension rod mounting screw holes (20102). The extension rod mounting screw holes (20102) correspond one-to-one with the extension rod fixing screw holes (304). The anti-misoperation extension rod (3) is installed to the extension rod mounting screw hole (20102) of the slide plate (201) through the extension rod fixing screw hole (304). The right side of the middle section of the slide plate (201) is provided with a vertically penetrating limit block mounting groove (20103). A pair of limit blocks (7) are also installed in the limit block mounting groove (20103) in a mirror symmetrical manner. The bottom of the groove of the limit block mounting groove (20103) is also provided with a second mounting hole (20104) for the rotating shaft of the slide plate (201) that is transversely penetrating. The longitudinal front end of the slide plate (201) is also integrally and vertically provided with a tooth gauge connecting rod (202). The right side of the tooth gauge connecting rod (202) is connected to the longitudinal front end of the slide plate (201). The left side of the tooth gauge connecting rod (202) is provided with a longitudinal through tooth gauge slot (203) that is open on the left side. The tooth-aligning seat (5) includes a tooth-aligning seat body (501). A longitudinally penetrating slide plate mounting groove (502) is provided on the right side of the tooth-aligning seat body (501). The vertical width of the slide plate mounting groove (502) is equal to the vertical height of the slide plate (201). The horizontal depth of the slide plate mounting groove (502) is equal to the horizontal width of the slide plate (201). The slide plate (201) is mounted on the tooth-aligning seat body (501) through the slide plate mounting groove (502). The slide plate (201) can also move back and forth longitudinally within the slide plate mounting groove (502) relative to the tooth-aligning seat body (501). The gear seat body (501) also has a first mounting hole (503) for a rotary shaft in the middle of the bottom of the slide plate mounting groove (502) along the horizontal direction. A rotary shaft (8) is provided in the first mounting hole (503). The gear seat body (501) also has multiple cover plate mounting screw holes (504) on the vertical upper and lower sides of the slide plate mounting groove (502) along the horizontal direction. The front side of the gear seat body (501) is also provided with a longitudinal through gear gauge mounting hole (505), and a gear gauge (6) is provided in the gear gauge mounting hole (505). The gear gauge mounting hole (505) and the first mounting hole (503) of the rotary shaft do not contact each other. The central axis of the gear gauge mounting hole (505) and the central axis of the first mounting hole (503) of the rotary shaft are located on the same horizontal plane. The bottom left side of the gear setter body (501) is also integrally provided with a left side fixing boss (506). The left side fixing boss (506) of the gear setter body is provided with multiple vertically penetrating left side fixing waist-shaped holes (507). The multiple left side fixing waist-shaped holes (507) of the gear setter body are evenly arranged along the longitudinal direction. The gear setter body (501) is installed on the machine tool worktable through the multiple left side fixing waist-shaped holes (507). The bottom right side of the gear setter body (501) is also integrally provided with a right side fixing boss (508). The right side fixing boss (508) of the gear setter body is provided with a plurality of vertically penetrating right side fixing waist-shaped holes (509). The plurality of right side fixing waist-shaped holes (509) of the gear setter body are evenly arranged along the longitudinal direction. The gear setter body (501) is also mounted on the machine tool worktable through the plurality of right side fixing waist-shaped holes (509). The vertical bottom center of the gear seat body (501) is also provided with a longitudinally penetrating square key mounting groove (510). The tooth gauge (6) includes a cylindrical tooth gauge body (601). An annular groove (602) is also provided on the tooth gauge body (601) along the circumferential direction near the longitudinal front end. The annular groove (602) and the tooth gauge slot (203) fit together. The tooth gauge (6) can move back and forth along the longitudinal direction under the drive of the tooth gauge connecting rod (202). The longitudinal rear section of the tooth gauge body (601) is installed in the tooth gauge mounting hole (505). The tooth gauge body (601) can move back and forth in the longitudinal direction relative to the tooth gauge mounting hole (505). The longitudinal rear end of the tooth gauge body (601) protrudes from the longitudinal rear side of the tooth seat body (501). The longitudinal rear end of the tooth gauge body (601) is also provided with a tooth groove mating surface (603). The two limiting blocks (7) are provided with transverse through rotary shaft mounting grooves (701) on the middle of their adjacent sides, and the inner surfaces of the two rotary shaft mounting grooves (701) form a rotary shaft mating surface (702). The vertical height of the limiting block (7) is equal to the vertical width of the sliding plate mounting groove (502), the horizontal thickness of the limiting block (7) is equal to the horizontal depth of the limiting block mounting groove (20103), and the vertical width of the limiting block (7) is equal to the vertical length of the limiting block mounting groove (20103). The rotary shaft (8) includes an integrally formed gear seat mounting shaft section (801), an eccentric cam (802), a cover plate mounting shaft section (803), and a cover plate outer knob shaft section (804). The mounting shaft section (801) inside the gear seat, the mounting shaft section (803) inside the cover plate, and the knob shaft section (804) outside the cover plate are coaxially arranged; The gear-mounting shaft section (801) is rotatably mounted on the gear-mounting body (501) from right to left in the transverse direction through the second mounting hole (20104) and the first mounting hole (503) of the rotary shaft. The eccentric cam (802) can contact the contact surface (702) of the rotating shaft during rotation, thereby causing the limiting block (7) to drive the slider (2) to reciprocate longitudinally; The mounting shaft section (803) inside the cover plate is rotatably mounted inside the cover plate (9); The outer knob shaft section (804) of the cover plate is located on the outside of the cover plate (9); The cover plate (9) includes a cover plate body (901), and a plurality of transverse through cover plate fixing screw holes (902) are provided on the cover plate body (901). The cover plate fixing screw holes (902) and the cover plate mounting screw holes (504) correspond one to one. The cover plate body (901) is also provided with a third mounting hole (903) for a rotating shaft that runs horizontally through it. The inner mounting shaft section (803) of the cover plate is rotatably installed in the third mounting hole (903). The cover plate body (901) can be installed on the right side of the toothed seat body (501) through the cover plate fixing screw hole (902).

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