CN212734538U

CN212734538U - Clamp for cutting key groove on tooth

Info

Publication number: CN212734538U
Application number: CN202021738115.8U
Authority: CN
Inventors: 任丽波
Original assignee: Ningbo Renying Seiko Co ltd
Current assignee: Ningbo Renying Seiko Co ltd
Priority date: 2020-08-19
Filing date: 2020-08-19
Publication date: 2021-03-19
Anticipated expiration: 2030-08-19

Abstract

The utility model provides a cut keyway anchor clamps to tooth belongs to gear machining's technical field. A fixture for cutting a key slot on a tooth comprises a base, a central shaft and a tooth block; the utility model discloses a be provided with center pin and tooth piece on the base, and be provided with the location tooth towards center pin one side on the tooth piece, can dismantle on the center pin simultaneously and be connected with the compact heap, make a plurality of gears of treating processing can overlap locate on the center pin and compress tightly through the compact heap, the gear of treating processing to each is fixed a position through the location tooth on the tooth piece simultaneously, thereby make the well line of the keyway of the gear after the processing align with well line of dividing in the tooth root or dividing in the tooth top, guarantee gear machining's quality, reduce the defective percentage, also can realize clamping and processing when a plurality of gears of treating processing simultaneously, machining efficiency has both been improved, operator's work burden has been alleviateed, can also avoid the anchor clamps damage problem that easily leads to because of many times clamping, the life of anchor clamps has been prolonged, more do benefit to the processing of gear.

Description

Clamp for cutting key groove on tooth

Technical Field

The utility model relates to a gear machining's technical field specifically relates to a cut keyway anchor clamps to tooth.

Background

In the gear design process, in order to guarantee the stability of being connected between gear and the corresponding gear shaft, can set up the keyway usually on the gear to, in order to improve the homogeneity and the structural strength of gear atress, need align the well separated time of keyway and branch line in the root or the addendum of the gear tooth at present, consequently, guarantee that the accuracy of the keyway of gear for tooth root or addendum position is gear machining's key.

However, the existing gear is processed by using a wire cutting method, if a middle parting line of a tooth root or a tooth top middle parting line of the gear to be processed is not accurately found after the gear to be processed is clamped on a clamp, the middle parting line of the keyway obtained by wire cutting deviates from the middle parting line of the tooth root or the middle parting line of the tooth top, so that the gear is unqualified, the defective rate is high, in addition, the existing clamp for clamping the gear to be processed generally only can clamp one gear to be processed, so that the processing of the gear keyway can only be carried out independently, the processing efficiency is extremely low, a large processing burden is brought to an operator, the clamp needs to be frequently assembled and disassembled, and the service life of the clamp is shortened.

Disclosure of Invention

Aiming at the problems in the prior art, the present invention aims to provide a fixture for cutting a key slot on a gear, which is provided with a base with a central shaft, inner holes of a plurality of gears to be processed are sleeved on the central shaft and are abutted against the base, and an avoidance groove is arranged on the central shaft, so that a wire electrode of a wire cutting device can conveniently pass through and follow-up wire feeding, meanwhile, a tooth block with positioning teeth is arranged on the base and beside the central shaft, the positioning teeth of the tooth block are clamped between gear teeth of the gear to be processed, so as to realize the positioning of the gear to be processed, and accurately find a tooth root dividing line or a tooth top dividing line of the gear to be processed, so that the dividing line of the key slot of the gear to be processed can be aligned with the dividing line in the root or the tooth top dividing line of the gear to be processed, thereby ensuring the quality of the gear processing, reducing the defective rate, and in addition, the height of the tooth block on the base is not, and one side of the central shaft, which is far away from the base, is provided with a pressing block, so that synchronous clamping and synchronous processing of a plurality of gears to be processed are realized, the problem of frequent clamping is avoided, the processing efficiency is improved, the workload is reduced, and the service life of the clamp is prolonged.

The specific technical scheme is as follows:

a tooth keyway cutting jig having the features comprising:

the positioning caulking groove is arranged beside the central hole and is arranged along the radial direction of the central hole;

the center shaft is provided with a through shaft hole along the axial direction, the lower end of the center shaft is fixedly connected in the center hole, the upper end of the center shaft extends out of the upper end surface of the base, an avoiding groove is formed in the side wall of the center shaft, the avoiding groove penetrates through the side wall of the center shaft along the radial direction of the shaft hole, meanwhile, the end part of the upper end of the center shaft is detachably connected with a pressing block, and a notch corresponding to the avoiding groove is formed in the pressing block;

the tooth piece, the tooth piece sets up perpendicularly on the base, and in the lower extreme embedding location caulking groove of tooth piece, the upper end salient of tooth piece is outside the up end of base to, one side that the tooth piece is close to the center pin is provided with the location tooth.

The tooth cutting key groove clamp is characterized in that two positioning caulking grooves are arranged, the two positioning caulking grooves are arranged along the radial direction of the central hole, and the two positioning caulking grooves are symmetrically arranged relative to the central hole.

The fixture for cutting the key slot on the tooth is characterized in that one side of the base is provided with a reference surface, and the reference surface is a plane.

The tooth cutting key groove clamp is characterized in that a stop block is further arranged on the base, the stop block is arranged beside the positioning caulking groove in parallel, the arrangement direction of the stop block is consistent with that of the positioning caulking groove, meanwhile, a base groove is formed in the base, and the bottom of the stop block is embedded in the base groove.

The tooth cutting keyway fixture comprises a support component, wherein the support component is arranged on the base and is positioned on the side part of the tooth block in the arrangement direction and/or on the side of the tooth block departing from the central hole.

The utility model provides an foretell cut keyway anchor clamps to tooth, wherein, supports tight subassembly and includes to support tight piece, adjusting bolt and fixing bolt, supports to set up the screw thread regulation hole that runs through on the tight piece, and adjusting bolt threaded connection is in screw thread regulation hole and its one end supports and leans on the tooth piece, has seted up the connecting hole on the base, supports tight piece and sets up on the connecting hole to fixing bolt passes behind the connecting hole and supports tight piece and be connected.

The utility model provides an foretell key groove anchor clamps are cut to tooth, wherein, the center pin is including the canned paragraph, location section and the locking section that are the integral type setting, and canned paragraph, location section and locking section are connected with end-to-end form along a direction in proper order, and the cross section of canned paragraph is greater than the cross section of location section, and the cross section of location section is greater than the cross section of locking section to, in the canned paragraph inserted and locates the center hole, the locking section can be dismantled outward and be connected with the compact heap.

The end face of one end, connected with the positioning section, of the fixing section protrudes out of the central hole, and the end face of one end, protruding out of the central hole, of the fixing section is a plane.

In the above fixture for cutting the key slot into the teeth, an inner tool withdrawal groove is formed at the joint between the fixing section and the positioning section of the central shaft.

The utility model provides an foretell key groove anchor clamps are cut to tooth, wherein, locking section and compact heap are threaded connection, are provided with the external screw thread on the outer wall of locking section, the compact heap for with external screw thread fit's nut, and set up the breach of indent on the inner wall of compact heap to, the width of breach is greater than the groove width of dodging the groove.

The positive effects of the technical scheme are as follows:

according to the tooth cutting key groove clamp, the base with the central shaft is arranged, the pressing block is detachably connected to one side, away from the base, of the central shaft, inner holes of a plurality of gears to be machined can be sleeved on the central shaft and locked through the pressing block, the avoiding groove is formed in the central shaft, threading and wire walking of an electrode wire are facilitated through the avoiding groove, meanwhile, the tooth blocks with positioning teeth are arranged on the base, each tooth block to be machined can be positioned by the tooth block with the positioning teeth, the tooth root central parting line or the tooth top central parting line of the gear to be machined can be quickly found, the central parting line of the key groove of the machined gear can be accurately aligned to the tooth root central parting line or the tooth top central parting line, and the accuracy of gear machining is guaranteed; in addition, synchronous clamping and processing of a plurality of gears to be processed are realized, the processing efficiency is improved, the workload is reduced, the problem of short service life of a clamp caused by frequent clamping is avoided, and the gear processing is facilitated.

Drawings

Fig. 1 is a structural diagram of an embodiment of a tooth cutting keyway fixture of the present invention;

FIG. 2 is a schematic view of a base according to a preferred embodiment of the present invention;

FIG. 3 is a longitudinal cross-sectional view of a central shaft according to a preferred embodiment of the present invention;

fig. 4 is a cross-sectional view of a central shaft according to a preferred embodiment of the present invention;

fig. 5 is a structural diagram of a pressing block according to a preferred embodiment of the present invention;

FIG. 6 is a view of a tooth block according to a preferred embodiment of the present invention;

fig. 7 is a structural diagram of a tightening assembly according to a preferred embodiment of the present invention.

In the drawings: 1. a base; 11. a central bore; 12. positioning the caulking groove; 13. a reference plane; 14. a base groove; 15. a stopper; 16. connecting holes; 2. a central shaft; 21. a shaft hole; 22. an avoidance groove; 23. a fixed section; 24. a positioning section; 25. a locking section; 26. an inner tool withdrawal groove; 3. a tooth block; 31. positioning teeth; 4. a compression block; 41. a notch; 5. a propping component; 51. a propping block; 52. and adjusting the bolt.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the following embodiments are specifically described with reference to fig. 1 to 7, but the following contents are not intended to limit the present invention.

Fig. 1 is a structural diagram of an embodiment of a fixture for cutting a key groove into teeth of the present invention. As shown in fig. 1, the present embodiment provides a fixture for cutting a tooth into a keyway, including: base 1, center pin 2 and tooth piece 3, center pin 2 installs on base 1, provides the installation carrier for a plurality of gears of treating processing, and tooth piece 3 sets up on base 1 and is located the lateral part of center pin 2 for a plurality of gears of treating processing of installation can pass through tooth piece 3 location on the center pin 2, and the well minute line of the keyway of processing on the gear of treating processing and tooth root or tooth top well minute line alignment provide the condition for guaranteeing.

Fig. 2 is a structural diagram of a base according to a preferred embodiment of the present invention. As shown in fig. 1 and 2, a central hole 11 and a positioning caulking groove 12 are formed in the upper end face of the base 1, and the central hole 11 and the positioning caulking groove 12 both penetrate through the base 1, so that the processing of the central hole 11 and the positioning caulking groove 12 on the base 1 is facilitated, meanwhile, the positioning caulking groove 12 is arranged beside the central hole 11, and the positioning caulking groove 12 is radially arranged along the central hole 11, so that structural components mounted in the subsequent positioning caulking groove 12 can limit the central hole 11 region, and a condition is provided for the subsequent gear block 3 to position a gear to be processed.

FIG. 3 is a longitudinal cross-sectional view of a central shaft according to a preferred embodiment of the present invention; fig. 4 is a cross-sectional view of a central shaft according to a preferred embodiment of the present invention. As shown in fig. 1 to 4, install center pin 2 on base 1 and offer the shaft hole 21 that runs through along its axial, center pin 2's lower extreme fixed connection is in base 1's centre bore 11, the installation of center pin 2 on base 1 has been realized, and, the up end of base 1 is stretched out to center pin 2's upper end is out, the one end that stretches out the up end of base 1 through center pin 2 is for the gear of treating processing provides the installation carrier, treat that the interior jogged joint of the gear of processing locates on the one end that the center pin 2 stretches out the up end of base 1 is out promptly, thereby realized treating the preliminary clamping of the gear of processing. And, offer on the outer wall on the center pin 2 and dodge groove 22, dodge groove 22 along the radial lateral wall that runs through center pin 2 in shaft hole 21 for the lateral wall of center pin 2 is by dodging groove 22 and is separated, thereby has made things convenient for wire electrode's wire electrode to wear and walk the silk, provides the condition for the subsequent keyway of walking the silk cutting gear through the wire electrode, can also prevent to cause the interference to the processing of keyway under the condition that the gear of treating processing provides the support promptly.

Additionally, fig. 5 is the utility model relates to a structure diagram of compact heap of preferred embodiment, as shown in fig. 1 and fig. 5, the tip of the upper end of center pin 2 can be dismantled and is connected with compact heap 4, and set up on compact heap 4 and dodge breach 41 that groove 22 corresponds, make and locate the back on center pin 2 at a plurality of gear sleeves of treating processing, the accessible can dismantle compact heap 4 and connect on center pin 2, locate the gear of treating processing on center pin 2 with a plurality of covers through compact heap 4 and compress tightly, prevent that a plurality of gears of treating processing from dropping from center pin 2, the stability of processing has been guaranteed, and, last and the breach 41 of dodging groove 22 corresponding of compact heap 4 can make the wire electrode wear smoothly and walk the silk, even get compact heap 4 and can also avoid disturbing the action of wire electrode when compressing tightly the gear of treating processing, structural design is more reasonable.

Fig. 6 is a structural diagram of a tooth block according to a preferred embodiment of the present invention. As shown in fig. 1 and 6, the tooth block 3 is vertically disposed on the base 1, and the lower end of the tooth block 3 is embedded into the positioning caulking groove 12, and the upper end of the tooth block 3 protrudes out of the upper end surface of the base 1, i.e. the upper end surface of the base 1 is provided with a convex tooth block 3, so that the tooth block 3 can adapt to the structural arrangement of the central shaft 2 protruding out of the base 1, and the tooth block 3 can be ensured to act on each gear to be processed. And, one side that the tooth piece 3 is close to the center pin 2 is provided with location tooth 31, make location tooth 31 on the tooth piece 3 can block into on the center pin 2 between the teeth of a cogwheel of the gear of treating processing of cover establishing, realize the location of the gear of treating processing through the tooth piece 3 promptly, make the gear cover of treating processing locate on the center pin 2 after only need can realize the location through location tooth 31 on the tooth piece 3, make the root of the gear of treating processing divide or the addendum median line can align with the root of the cogwheel of the center pin 2 that dodges groove 22, thereby make the median line of the keyway that the processing obtained on the gear can align with the root of the cogwheel divide or the addendum median line, thereby the accuracy of the processing of gear has been guaranteed, the processing quality has been guaranteed, the defective percentage has been reduced.

More specifically, location caulking groove 12 on base 1 is provided with two, two location caulking grooves 12 all follow the radial arrangement of centre bore 11, and two location caulking grooves 12 are about centre bore 11 symmetrical arrangement, make one side or the optional installation tooth piece 3 in both sides of center pin 2, under the condition of damage such as a location caulking groove 12 because of machining error or wearing and tearing promptly, the location of the gear of treating processing that the cover was established to center pin 2 is realized to another location caulking groove 12 installation tooth piece 3 of accessible, structural adaptability and reliability are higher, it is more reasonable to design.

More specifically, one side of base 1 is provided with reference surface 13, and reference surface 13 is the plane, and at this moment, for the operator's accuracy judge the direction of processing, can make reference surface 13 arrange along the tangential direction of center pin 2, can make things convenient for the operator to install base 1 accuracy on linear cutting equipment fast through the last reference surface 13 of base 1, and the location is more accurate to better promotion gear machining's quality.

More specifically, still be provided with dog 15 on the base 1, dog 15 sets up in location caulking groove 12 side by side, and the direction of arranging of dog 15 is unanimous with the direction of arranging of location caulking groove 12, make after tooth piece 3 inlays and locates in location caulking groove 12, the lateral wall of tooth piece 3 can support and lean on dog 15, make dog 15 can regard as the direction benchmark of tooth piece 3, guarantee the accuracy in tooth piece 3 direction, thereby make the accuracy of the gear clamping direction of treating processing through tooth piece 3 location, gear machining's quality has further been guaranteed. Meanwhile, the base 1 is provided with the base groove 14, the bottom of the stop block 15 is embedded in the base groove 14, the stop block 15 is convenient to install and fix on the base 1 through the base groove 14, and the operation is more convenient.

Fig. 7 is a structural diagram of a tightening assembly according to a preferred embodiment of the present invention. As shown in fig. 1 and 7, the base 1 is further provided with a tightening component 5, the tightening component 5 is located on the side of the tooth block 3 in the arrangement direction and/or on the side of the tooth block 3 departing from the center hole 11, the tightening component 5 can be arranged on the base 1, the side of the tooth block 3 and/or on the side of the center hole 11 is tightly propped through the tightening component 5, the problem of inclination of the tooth block 3 caused by to-be-processed is prevented, the problem of inaccurate positioning of the gear to-be-processed caused by inclination of the tooth block 3 is avoided, and the quality of gear processing is further ensured.

More specifically, the tight subassembly 5 that supports on base 1 includes again supports tight piece 51, adjusting bolt 52 and fixing bolt, support and set up the screw thread regulation hole that runs through on the tight piece 51, adjusting bolt 52 threaded connection supports in the screw thread regulation hole and its one end supports and leans on tooth piece 3, move adjusting bolt 52 through twisting promptly, adjustable adjusting bolt 52 stretches out the outer distance of supporting tight piece 51, thereby adjust adjusting bolt 52 and support tightly the power on tooth piece 3, thereby make tooth piece 3 can stably supported tightly by adjusting bolt 52, the stability of tooth piece 3 installation on base 1 has been guaranteed, thereby the reliability of treating the gear location of processing has been guaranteed. In addition, the base 1 is provided with a connecting hole 16, the abutting block 51 is arranged on the connecting hole 16, and the fixing bolt penetrates through the connecting hole 16 and then is connected with the abutting block 51, namely the connecting hole 16 on the base 1 facilitates the installation of the abutting block 51, so that the abutting block 51 can be connected and fixed after penetrating through the connecting hole 16 only through the fixing bolt, and the installation is convenient.

More specifically, center pin 2 is including being the canned paragraph 23, location section 24 and the locking section 25 that the integral type set up, and the different sections of the center pin 2 of canned paragraph 23, location section 24 and locking section 25 formula as an organic whole have guaranteed center pin 2's structural strength promptly. And, the fixed section 23, the positioning section 24 and the locking section 25 are connected in an end-to-end manner in sequence along one direction, the cross section of the fixed section 23 is larger than that of the positioning section 24, and the cross section of the positioning section 24 is larger than that of the locking section 25, so that the central shaft 2 is of a variable cross-section structure, and the end of the central shaft connected with the central hole 11 of the base 1 is the end with the largest cross section, which can ensure that the contact area with the inner wall of the central hole 11 of the base 1 is the largest, improve the connection stability, and ensure that the central shaft 2 is not completely divided into two parts due to the avoiding groove 22 after the avoiding groove 22 is arranged on the central shaft 2, but is connected through the fixed section 23 with the larger cross section, thereby ensuring. And, the fixed section 23 is inserted and is located in the centre bore 11, and locking section 25 can be dismantled outward and be connected with compact heap 4 for compact heap 4 sets up in the one side that center pin 2 deviates from base 1, thereby makes after 24 overcoat in the location section is equipped with a plurality of gears of treating processing, and the gear of treating processing can be compressed tightly by compact heap 4, has realized that the gear of treating processing is fixed on center pin 2, and it is more convenient to operate.

More specifically, the end face of the end, connected with the positioning section 24, of the fixing section 23 of the central shaft 2 is protruded out of the central hole 11, and the end face of the end, protruded out of the central hole 11, of the fixing section 23 is a plane, namely the end face, protruded out of the central hole 11, of the fixing section 23 can protrude out of the upper end face of the base 1, so that the part, used for abutting against the end face of the gear to be processed, is only the end face of the fixing section 23, namely only the end face of the fixing section 23 needs to be subjected to finish machining, compared with the upper end face of the whole base 1 subjected to finish machining, the machining cost is saved, and after machining, an operator only needs to clean the end face of the fixing section 23, compared with the upper end face of the whole base 1, the machining burden of the operator is effectively reduced, and the structural design is more.

More specifically, the junction between the fixed section 23 of center pin 2 and the location section 24 is provided with interior sword groove 26 that moves back for there is the clearance of indent between the terminal surface of the fixed section 23 of center pin 2 and the location section 24, thereby guaranteed that the cover locates the terminal surface that the terminal surface of the gear of treating processing outside the location section 24 can laminate the terminal surface of fixed section 23 completely, prevented because of the unable accurate problem of installing of gear that factors such as the variable cross section department processing defect of center pin 2 leads to, further guaranteed the quality of gear machining.

More specifically, the locking section 25 and the compact heap 4 of center pin 2 are threaded connection, and at this moment, be provided with the external screw thread on the outer wall of locking section 25, compact heap 4 for with thread fit's nut, made things convenient for the dismouting of compact heap 4 on center pin 2 to the gear of treating processing clamping on center pin 2 has been made things convenient for. And, set up indent breach 41 on compact heap 4's the inner wall, and, the width of breach 41 is greater than the groove width of dodging groove 22, can make breach 41 on compact heap 4 even can not correspond completely and dodge groove 22, also can make breach 41 can hold completely and dodge groove 22, can also prevent to block the groove 22 of dodging on the center pin 2 when the skew problem appears in the tightening of compact heap 4, guaranteed to dodge groove 22 and be in not sheltering from the state all the time, thereby avoided compact heap 4 to the interference that the wire electrode walked, structural design is more reasonable.

As a preferred embodiment, the groove length of the positioning caulking groove 12 is greater than the radial length of the tooth block 3 along the central shaft 2, so that the tooth block 3 can move in the positioning caulking groove 12 along the radial direction of the central shaft 2, that is, when the gear to be processed is sleeved on the central shaft 2 or taken down from the central shaft 2, the tooth block 3 can slide to an area far away from the central shaft 2, thereby facilitating the disassembly and assembly of the gear to be processed on the central shaft 2, and when the gear to be processed on the central shaft 2 needs to be positioned, the tooth block 3 can be close to the central shaft 2, so that the positioning teeth 31 on the tooth block 3 are clamped between the teeth of the gear to be processed, thereby realizing the positioning of the gear to be processed, not only facilitating the operation, but also enabling the gear to be adapted to different diameters to be positioned, and having higher adaptability.

As a preferred embodiment, the connecting hole 16 for installing the abutting component 5 on the base 1 is a countersunk hole, and the countersunk end of the connecting hole 16 is located on the lower end surface of the base 1, so that the end of the fixing bolt is located in the countersunk end of the countersunk hole, thereby avoiding the problem that the lower end surface of the base 1 is uneven because the fixing bolt protrudes out of the lower end surface of the base 1, and ensuring the accuracy of clamping the clamp on the wire cutting equipment.

The fixture for cutting the key slot on the gear comprises a base 1, a central shaft 2 and a gear block 3, wherein the central shaft 2 and the gear block 3 are arranged on the base 1, a positioning tooth 31 facing one side of the central shaft 2 is arranged on the gear block 3, and a pressing block 4 is detachably connected on the central shaft 2, so that a plurality of gears to be processed can be sleeved on the central shaft 2 and pressed by the pressing block 4, each gear to be processed is positioned by the positioning tooth 31 on the gear block 3, and the central line of the gear root or the central line of the gear top of the gear to be processed can be accurately found, so that the central line of the key slot of the processed gear can be aligned with the central line of the tooth root or the central line of the tooth top, the quality of the gear processing is ensured, the defective rate is reduced, and the simultaneous clamping and processing of the plurality of gears to be processed can be realized, the processing efficiency is improved, and the work burden of an, the problem of damage to the clamp caused by repeated clamping can be avoided, the service life of the clamp is prolonged, and the gear machining is facilitated.

The above is only a preferred embodiment of the present invention, and not intended to limit the scope of the invention, and it should be appreciated by those skilled in the art that various equivalent substitutions and obvious changes made in the specification and drawings should be included within the scope of the present invention.

Claims

1. A to tooth keyway cutting anchor clamps, its characterized in that includes:

the positioning embedded groove is arranged beside the central hole and is arranged along the radial direction of the central hole;

the tooth block is vertically arranged on the base, the lower end of the tooth block is embedded into the positioning caulking groove, the upper end of the tooth block protrudes out of the upper end surface of the base, and one side, close to the central shaft, of the tooth block is provided with positioning teeth.

2. The tooth cutting keyway clamp of claim 1, wherein there are two locating keyways, both locating keyways being arranged radially of the central bore, and both locating keyways being arranged symmetrically about the central bore.

3. The key cutting fixture of claim 1, wherein one side of the base is provided with a reference surface, and the reference surface is a flat surface.

4. The tooth cutting key groove clamp according to claim 1, wherein the base is further provided with a stop block, the stop block is arranged beside the positioning caulking groove in parallel, the arrangement direction of the stop block is consistent with that of the positioning caulking groove, meanwhile, the base is provided with a base groove, and the bottom of the stop block is embedded in the base groove.

5. The tooth cutting keyway clamp of claim 1, further comprising a resisting component, wherein the resisting component is arranged on the base and located on a side of the tooth block in the arrangement direction and/or a side of the tooth block facing away from the central hole.

6. The fixture for cutting a key slot into a tooth according to claim 5, wherein the abutting assembly comprises an abutting block, an adjusting bolt and a fixing bolt, a threaded adjusting hole is formed in the abutting block, the adjusting bolt is in threaded connection with the threaded adjusting hole, one end of the adjusting bolt abuts against the tooth block, a connecting hole is formed in the base, the abutting block is arranged on the connecting hole, and the fixing bolt is connected with the abutting block after penetrating through the connecting hole.

7. The opposite-tooth keyway cutting clamp according to claim 1, wherein the central shaft comprises a fixing section, a positioning section and a locking section which are integrally arranged, the fixing section, the positioning section and the locking section are sequentially connected in an end-to-end mode along one direction, the cross section of the fixing section is larger than that of the positioning section, the cross section of the positioning section is larger than that of the locking section, the fixing section is inserted into the central hole, and the locking section is detachably connected with the pressing block.

8. The key slot cutting fixture for teeth of claim 7, wherein an end surface of an end of the fixing section connected to the positioning section protrudes out of the central hole, and an end surface of an end of the fixing section protruding out of the central hole is a plane.

9. The opposite-tooth cutting keyway clamp as set forth in claim 7, wherein an inward receding groove is provided at the junction between the fixing section and the positioning section of the central shaft.

10. The opposite-tooth keyway cutting clamp according to claim 7, wherein the locking section is in threaded connection with the pressing block, an external thread is arranged on the outer wall of the locking section, the pressing block is a nut matched with the external thread, an inward notch is formed in the inner wall of the pressing block, and the width of the notch is larger than the width of the avoiding groove.