CN220144921U - Clamp for face gear - Google Patents

Abstract

The utility model discloses a clamp for an end gear, which comprises a clamp body, a base, an end pressing piece and a driving assembly, wherein the clamp body is fixed to a machine tool; the base is fixedly connected with the clamp body, the front end of the base is limited with a reference surface for the end face of the face gear to abut, and the reference surface is convexly provided with positioning convex teeth extending into the tooth gaps; the end press piece comprises a supporting part and a pressing part, wherein the supporting part is positioned at the side of the base, the pressing part is formed by laterally extending the self-supporting part, the pressing part is arranged in a front-back direction in a translatable way, and is arranged in a rotatable way along an axis extending in the front-back direction, so as to have a pressing stroke of translating backwards and rotating towards the base, and a release stroke of translating forwards and/or rotating in a direction away from the base, and in the pressing stroke, the pressing part presses the end gear on a reference surface; the driving component is in driving connection with the end pressing piece. The centering precision of the end face tooth pitch circle is higher, so that the tooth jump precision of the end face gear after processing is higher, and the processing quality of the end face gear is improved integrally.

Description

Clamp for face gear

Technical Field

The utility model relates to the technical field of processing of face gears, in particular to a clamp for a face gear.

Background

Face gears are commonly used in automotive products such as automotive gearboxes. In order to ensure the usability of the motor product, the processing quality of the face gear is required to be high, for example, the roundness, the tooth jump precision, the coaxiality and the like of the face gear after being processed are required to be high. The existing face gear is generally clamped by a three-jaw clamp in the machining process, so that the deformation of the face gear is easily caused in the clamping process, and the machining quality of the face gear is reduced.

Disclosure of Invention

The utility model mainly aims to provide a clamp, which aims to solve the problem that the processing quality of a face gear is reduced due to easy deformation when the face gear is clamped by a traditional three-jaw clamp.

In order to achieve the above object, the present utility model provides a face gear clamp, comprising:

a clamp body extending in a front-rear direction, a rear end of the clamp body being adapted to be fixed to a machine tool;

the base is arranged at the front end of the clamp body in a protruding mode, is fixedly connected with the clamp body, and is provided with a reference surface for the end face of the face gear to abut against, and positioning convex teeth which are used for extending into the tooth gaps of the face gear in a protruding mode;

the end pressing piece is arranged at the front end of the clamp body in a protruding mode, the end pressing piece comprises a supporting portion located at the side of the base and a pressing portion formed by extending laterally from the supporting portion, the pressing portion is arranged in a front-back direction in a translatable mode and is arranged in a rotatable mode along an axis extending in the front-back direction, so that a pressing stroke capable of translating backwards and rotating towards the base and a release stroke capable of translating forwards and/or rotating in a direction away from the base are achieved, and the pressing portion presses an end face gear on the reference surface in the pressing stroke; the method comprises the steps of,

and the driving assembly is arranged on the clamp body and connected with the end pressing piece so as to drive the pressing part to switch between the pressing stroke and the releasing stroke.

Optionally, the base includes:

the fixed seat is detachably connected with the front end of the clamp body;

the calibration ring is detachably connected with the front end of the fixed seat and is positioned in the middle of the fixed seat; the method comprises the steps of,

the reference blocks are distributed at intervals along the peripheral direction of the calibration ring, are detachably connected with the fixing base respectively, and the front end surfaces of the reference blocks form the reference surface.

Optionally, the plurality of reference blocks include at least one first reference block and at least one second reference block, wherein only the reference surface of the second reference block is convexly provided with the positioning convex teeth; and/or the number of the groups of groups,

the positioning convex teeth are arranged in a gradually-enlarged width manner in a direction away from the calibration ring in the radial direction.

Optionally, each of the first reference blocks and each of the second reference blocks are alternately arranged in sequence along the outer circumferential direction of the calibration ring.

Optionally, at least part of the reference blocks are movably arranged along the radial direction of the calibration ring;

one of the fixed seat and the reference block extends along the radial direction of the calibration ring and is provided with a first sliding groove, the other one of the fixed seat and the reference block is provided with a first sliding protrusion, and the first sliding protrusion is in sliding connection with the first sliding groove.

Optionally, at least part of the reference blocks are movably arranged in a tangential direction of the calibration ring;

one of the fixed seat and the reference block extends along the tangential direction of the calibration ring and is provided with a second sliding groove, and the other one of the fixed seat and the reference block is provided with a second sliding protrusion which is in sliding connection with the second sliding groove.

Optionally, the orthographic projection of the pressing part on the front end face of the base is staggered with the positioning convex teeth.

Optionally, a channel is penetrated in the middle of the base and the corresponding part of the clamp body along the front-back direction;

the clamp of the face gear further comprises a cover body, wherein the cover body is connected with the base, and covers the front end passage opening of the passage.

Optionally, a mounting cavity is formed inside the fixture body, and the driving assembly includes:

the connecting shaft is arranged in the mounting cavity, and the rear end of the connecting shaft extends out of the mounting cavity and is connected with a linear output shaft of a driver of the machine tool;

the pull sleeve is arranged in the mounting cavity, a shaft hole penetrates through the pull sleeve along the front-back direction, the shaft hole is sleeved on the outer side of the connecting shaft, so that when the connecting shaft is driven to move forwards, the pull sleeve is provided with a threaded hole, and the threaded hole and the shaft hole are arranged at intervals; the method comprises the steps of,

one end of the screw rod is arranged in the mounting cavity and is in threaded connection with the threaded hole, and the other end of the screw rod extends outwards from the mounting cavity and is in transmission connection with the end pressing piece, so that the pressing part is driven to perform the pressing stroke when the pull sleeve moves forwards.

Optionally, the driving assembly further comprises:

the pushing block is movably arranged in the shaft hole along the front-back direction and is positioned at the front side of the connecting shaft, so that when the connecting shaft is driven to move forwards to a set distance, the pushing block is pushed to move forwards; the method comprises the steps of,

and one end of the elastic piece is connected with the pushing block, and the other end of the elastic piece is fixed relative to the clamp body.

In the technical scheme provided by the utility model, the base is fixedly connected with the clamp body, so that the reference surface and the positioning convex teeth are fixed relative to the clamp body; the reference surface is kept in abutting connection with the rear end surface of the face gear, so that the shaft end of the face gear is limited in the backward direction, and the contact area between the reference surface and the face gear is enlarged as much as possible; the positioning convex teeth extend into the tooth gaps of the face gears, and the positioning convex teeth and the tooth gaps are in concave-convex fit, so that the circumferential direction of the face gears is limited, centering clamping can be realized, and the face gears can be prevented from rotating relative to the reference surface; at least the pressing part in the end pressing part is movable relative to the face gear, when the driving assembly drives the pressing part to perform pressing stroke, the pressing part can limit the front direction of the shaft end of the face gear and is matched with the datum plane together to axially clamp the face gear, so that clamping deformation of the face gear in the radial direction is avoided. The clamp for the face gear provided by the utility model has higher centering precision for the pitch circle of the face gear, so that the tooth jump precision of the face gear after processing is higher, and the processing quality of the face gear is improved integrally.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic perspective view of an embodiment of a face gear clamp according to the present utility model;

FIG. 2 is a partially exploded view of the face gear clamp of FIG. 1;

FIG. 3 is a schematic top view of the face gear clamp of FIG. 1 (with the face gear undamped);

FIG. 4 is a schematic cross-sectional view of the structure at A-A in FIG. 3 (clamping face gears);

FIG. 5 is a schematic perspective view of the base of FIG. 1;

fig. 6 is a schematic view of the bottom structure of the reference block of fig. 5.

Reference numerals illustrate:

100 clamp bodies; 110 mounting cavities; a 200 base; 201 a reference plane; 202 positioning convex teeth; 211 fixing seats; 212 a receiving tray; 213 channels; 220 calibration rings; 230 a reference block; 231 a first reference block; 232 a second reference block; 241 a first chute; 242 a first slide tab; 251 a second chute; 252 a second slide; 260 cover body; 300 end pressing piece; 310 a support; 320 press parts; 400 drive assembly; 410 a connecting shaft; 420 pull sleeve; a 421 shaft hole; 422 threaded holes; 430 a screw; 441 push block; 442 elastic members; 443 connecting blocks; 444 guide rod; 500 face gear.

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

Referring to fig. 1 to 6, the clamp for face gear 500 according to the present utility model is mainly used for clamping face gear 500 in a machine tool. It will be appreciated that the machine tool is generally provided with mounting means for clamping by the clamp, the specific form of the mounting means being adapted to different types and specifications of machine tools and being embodied differently, without limitation. In practical application, the mounting component can be represented by a surface to be mounted, a shaft to be mounted, a block to be mounted, a frame to be mounted and the like, and specifically, for example, a machine body fixing frame preset by a machine tool.

The clamp of the face gear 500 is clamped in an installation component of the machine tool, and receives driving force output by a driver such as an oil cylinder of the machine tool, so that automatic clamping and release of the face gear 500 are realized.

In view of the above, in particular, the clamp of the face gear 500 includes a clamp body 100, a base 200, an end pressing member 300, and a driving assembly 400. Wherein the clamp body 100 extends in the front-rear direction, and the rear end of the clamp body 100 is fixed to a machine tool; the base 200 is protruded forward at the front end of the fixture body 100 and is fixedly connected with the fixture body 100, the front end of the base 200 defines a reference surface 201 for the end face of the face gear 500 to abut, and the reference surface 201 is protruded with positioning protruding teeth 202 for extending into the tooth gap of the face gear 500; the end press 300 is convexly arranged at the front end of the fixture body 100, the end press 300 comprises a supporting part 310 positioned at the side of the base 200, and a pressing part 320 formed by extending laterally from the supporting part 310, the pressing part 320 is arranged in a front-back direction in a translation way and is rotatably arranged along an axis extending in the front-back direction so as to have a pressing stroke of translating backwards and rotating towards the base 200, and a releasing stroke of translating forwards and/or rotating in a direction away from the base 200, and the pressing part 320 presses the face gear 500 on the reference surface 201 in the pressing stroke; the driving assembly 400 is disposed on the clamp body 100 and connected to the end press 300 to drive the pressing portion 320 to switch between the pressing stroke and the releasing stroke.

In the technical scheme provided by the utility model, the base 200 is fixedly connected with the clamp body 100, so that the reference surface 201 and the positioning convex teeth 202 are both fixed on the clamp body 100; the reference surface 201 is kept in contact with the rear end surface of the face gear 500, so that the shaft end of the face gear 500 is limited in the backward direction, and the contact area between the reference surface 201 and the face gear 500 is enlarged as much as possible; the positioning convex teeth 202 extend into the tooth gaps of the face gear 500, and the positioning convex teeth 202 and the tooth gaps are matched in a concave-convex manner, so that the circumferential direction of the face gear 500 is limited, centering clamping can be realized, and the face gear 500 can be prevented from rotating relative to the reference surface 201; at least the pressing part 320 in the end pressing part 300 is movable relative to the face gear 500, when the driving assembly 400 drives the pressing part 320 to perform pressing stroke, the pressing part 320 can limit the front direction of the shaft end of the face gear 500 and is matched with the reference surface 201 together to axially clamp the face gear 500, so that clamping deformation of the face gear 500 in the radial direction is avoided. The fixture of the face gear 500 provided by the utility model has higher centering precision on the face tooth pitch circle, so that the tooth jump precision of the face gear 500 after processing is higher, and the processing quality of the face gear 500 is improved integrally.

In this design, the rear end of the fixture body 100 is used for detachably connecting with the mounting component, and the detachable connection manner of the two is not limited, but may be one or more of screw connection, fastening, adhesive fixation, magnetic attraction fixation, sucker fixation, and the like.

The pedestal 200 is provided protruding forward at the front end of the clamp body 100. Specifically, the base 200 may be directly provided on the front surface of the jig body 100, or when the mounting groove is partially formed in the front end of the jig body 100, the base 200 may be at least partially accommodated in the mounting groove. The base 200 is detachably connected with the fixture body 100, so that the machining precision requirement on the fixture body 100 is reduced, and the same fixture body 100 can be used for clamping and fixing gears with different specifications by disassembling and assembling different bases 200.

In practice, the base 200 may be substantially block-shaped, with at least part of its front surface constituting said reference plane 201. Alternatively referring to fig. 2 to 4, in one embodiment, the base 200 includes a fixing base 211, a calibration ring 220, and a plurality of reference blocks 230. Wherein, the fixing base 211 is detachably connected with the front end of the fixture body 100; the calibration ring 220 is detachably connected to the front end of the fixing base 211, and is located in the middle of the fixing base 211; the plurality of reference blocks 230 are arranged at intervals along the peripheral direction of the calibration ring 220, and are detachably connected with the fixing base 211, and the front end surface of each reference block 230 forms the reference surface 201.

In order to increase the adaptation degree between the fixing base 211 and the front end of the fixture body 100, in a further scheme, the base 200 may further include a receiving disc 212, where the receiving disc 212 extends along the front end surface of the fixture body 100 to form a sufficiently large connecting surface for more firmly connecting with the fixture body 100; the fixing base 211 may be connected to a side of the receiving tray 212 opposite to the fixture body 100, and a radial cross-sectional area of the fixing base 211 may be set smaller than a radial cross-sectional area of the receiving tray 212, so as to reduce material consumption, and reduce space occupation of the fixture body 100 in a radial direction, so that enough peripheral space can be reserved for mounting the end pressing member 300.

The fixing base 211 is generally cylindrical, so as to be capable of moving along an arc surface on the outer peripheral side wall thereof, adapting to the outer peripheral shape of the gear, and avoiding interference or constraint on the setting of the end press 300. The fixing base 211 and the plurality of reference blocks 230 are detachably connected and fixed, so that the mounting positions of the reference blocks 230 relative to the fixing base 211, the number of the reference blocks 230, the size of the reference blocks 230, the specification of the reference blocks 230, the mounting mode of the reference blocks 230 and the like can be freely selected and flexibly configured. The fixing base 211 is provided to be able to draw the distance between each reference block 230 and the front end of the jig body 100 and to be able to be mutually fitted with the support portion 310 in the end press 300.

The shape and size of each reference block 230 are kept substantially uniform and are located at the side area of the fixing base 211; the calibration ring 220 is substantially annular, and is located at a middle area of the fixing seat 211, and an outer circumferential sidewall of the calibration ring 220 is adapted to and abutted against a corresponding sidewall of each reference block 230, so that each reference block 230 can be calibrated by the calibration ring 220.

The front end surface of each reference block 230 at least partially constitutes the reference plane 201. The positioning teeth 202 may be disposed in one-to-one correspondence with each tooth space of the face gear 500, but for simplicity, in this embodiment, the number of positioning teeth 202 may be smaller than the number of tooth spaces of the face gear 500, and may be arranged at equal intervals along the circumferential direction of the calibration ring 220 as much as possible.

Further, when the number of the positioning teeth 202 is set to be at least two, the direction of the connecting line between any two of the positioning teeth 202 is not set through the axis of the calibration ring 220, that is, the axis of the end of the face gear 500, so as to avoid that the centering abutment forces between the two positioning teeth 202 are collinear when the two positioning teeth 202 abut against the pitch circle surface of the face gear 500, and the face gear 500 is obviously deformed at the collinear position.

In addition, at least one of the positioning teeth 202 is arranged with a width gradually increasing in a direction away from the calibration ring 220 in a radial direction, so that a structure with a larger width can be formed at the radial outer end of the positioning teeth 202, on one hand, the adaptation degree of tooth gaps with various widths can be increased, on the other hand, a stop in the direction can be formed on the face gear 500 to a certain extent, and the radial limiting effect on the face gear 500 is increased.

In practical applications, the structure of each reference block 230 may be set to be completely consistent, that is, each reference block 230 may be locally provided with a positioning convex tooth 202. Alternatively, referring to fig. 2 and 5, in an embodiment, the plurality of reference blocks 230 includes at least one first reference block 231 and at least one second reference block 232, wherein only the reference surface 201 of the second reference block 232 is provided with the positioning teeth 202. In this way, the reference surface 201 of the first reference block 231 can be completely abutted against the rear end surface corresponding position of the face gear 500, and the abutting area of the two can be increased as much as possible; one or more positioning convex teeth 202 are locally and convexly arranged on the reference surface 201 of the second reference block 232, so that the positioning convex teeth can effectively abut against the corresponding position of the rear end face of the face gear 500, and the purpose of centering and clamping the face gear 500 is realized through the positioning convex teeth 202. The structures between the first reference blocks 231 and/or between the second reference blocks 232 may be identically configured for ease of processing.

Based on the above, in an embodiment, each of the first reference blocks 231 and each of the second reference blocks 232 are alternately arranged in order along the outer circumferential direction of the calibration ring 220. In this way, the reference surface 201 of the first reference block 231 and the positioning teeth 202 are arranged at regular intervals, which is helpful for the stable and balanced abutting of the face gear 500.

Furthermore, referring to fig. 2 and 6, in one embodiment, at least a portion of the reference blocks 230 are movably disposed along a radial direction of the calibration ring 220;

one of the fixing base 211 and the reference block 230 is provided with a first sliding groove 241 extending along the radial direction of the calibration ring 220, the other is provided with a first sliding protrusion 242, and the first sliding protrusion 242 is slidably connected with the first sliding groove 241. In this way, by adjusting the sliding connection position of the first sliding protrusion 242 at the first sliding groove 241, the relative position between the reference block 230 and the fixing base 211 in the radial direction can be determined, so that the reference block 230 is adapted to the calibration ring 220 of different sizes and/or to the face gear 500 of different sizes.

And/or in an embodiment, at least a portion of the reference blocks 230 are movably adjustable along a tangential direction of the calibration ring 220; one of the fixing base 211 and the reference block 230 is provided with a second sliding groove 251 extending along the tangential direction of the calibration ring 220, the other one is provided with a second sliding protrusion 252, and the second sliding protrusion 252 is slidably connected with the second sliding groove 251. In this way, by adjusting the sliding connection position of the second sliding protrusion 252 at the second sliding groove 251, the tangential relative position between the reference block 230 and the fixing base 211 can be determined, so as to adjust the abutment position of each reference block 230 and the calibration ring 220.

Of course, in other embodiments, at least a portion of the reference blocks 230 may also be provided movably adjustable along the circumference of the calibration ring 220; one of the fixing seat 211 and the reference block 230 extends along the circumferential direction of the calibration ring 220 and is provided with a third sliding groove, and the other one is provided with a third sliding protrusion, and the third sliding protrusion is slidably connected with the third sliding groove. And/or, at least part of the reference blocks 230 may also be provided with an axially movable adjustment along the calibration ring 220; one of the fixing seat 211 and the reference block 230 extends along the axial direction of the calibration ring 220 and is provided with a fourth sliding groove, and the other one is provided with a fourth sliding protrusion, and the fourth sliding protrusion is slidably connected with the fourth sliding groove.

Further, according to any of the above embodiments, the support portion 310 of the end pressing member 300 is generally cylindrical and extends in a longitudinal shape along the axial direction of the jig body 100; the pressing part 320 is generally block-shaped, and the pressing part 320 and the supporting part 310 are rotatably mounted along the front-rear axis; at least the rear end face of the pressing portion 320 is adapted to the shape of the front end face of the face gear 500.

The number of the end pressing members 300 may be set to one or a plurality of the end pressing members may be sequentially arranged at intervals along the outer circumferential direction of the fixing base 211, specifically, for example, three in the illustration of the present embodiment.

Further, in an embodiment, the front projection of the pressing portion 320 on the front end surface of the base 200 is offset from the positioning teeth 202, that is, the rearward pressing force applied by the pressing portion 320 to the face gear 500 is offset from the positioning teeth 202 as much as possible, so that the portion of the face gear 500 directly receiving the force applied by the pressing portion 320 abuts against the reference surface 201 as much as possible, which contributes to stable clamping in the axial direction.

In addition, referring to fig. 3 to 4, in an embodiment, a channel 213 is formed in the middle portion of the base 200 and the corresponding portion of the fixture body 100 along the front-rear direction; the fixture of the face gear 500 further includes a cover 260, where the cover 260 is connected to the base 200, and covers the front end channel 213 of the channel 213. The cover 260 can prevent foreign matters from entering the channel 213, and the cover 260 can provide a larger mounting surface for the calibration ring 220 to firmly mount the calibration ring 220.

Based on any of the above embodiments, in an embodiment, the fixture body 100 has a mounting cavity 110 formed therein, and the driving assembly 400 includes a connecting shaft 410, a pull sleeve 420, and a screw 430. The connecting shaft 410 is disposed in the mounting cavity 110, and the rear end of the connecting shaft 410 extends out of the mounting cavity 110 and is used for connecting with a linear output shaft of a driver of a machine tool; the pull sleeve 420 is disposed in the mounting cavity 110, the pull sleeve 420 is provided with a shaft hole 421 extending through the pull sleeve 420 in a front-rear direction, the shaft hole 421 is sleeved on the outer side of the connecting shaft 410, so that when the connecting shaft 410 is driven to move forward, the pull sleeve 420 is provided with a threaded hole 422, and the threaded hole 422 and the shaft hole 421 are disposed at intervals; one end of the screw 430 is disposed in the mounting cavity 110 and is in threaded connection with the threaded hole 422, and the other end of the screw extends out from the mounting cavity 110 and is in driving connection with the end pressing member 300, so as to drive the pressing portion 320 to perform the pressing stroke when the pull sleeve 420 moves forward.

Specifically, the fixture body 100 may include at least two bodies, at least one of which is disposed with a recess, and the other of which covers the recess to jointly enclose the mounting cavity 110. The drive assembly 400 may include a power component that directly provides the driving force; or the drive assembly 400 does not include a power component and is coupled to a driver provided to the machine tool to obtain a driving force of the machine tool. The driver of the machine tool can provide linear output driving force or rotary output driving force, and the driving assembly 400 makes corresponding adjustment according to the output form of the driver. Taking the example in which the driver provides a linear output driving force, i.e. the driver comprises a linear output shaft:

the connecting shaft 410 moves back and forth under the drive of the linear output shaft, drives the pull sleeve 420 to synchronously move back and forth, and then drives the screw 430 to move back and forth and rotate along the axis extending in the front-back direction through the threaded connection of the threaded hole 422 and the screw 430, so that the driving of each pressing part 320 is finally realized, and the switching of each pressing part 320 in the pressing stroke and the releasing stroke thereof is realized.

Further, in an embodiment, the driving assembly 400 further includes a pushing block 441 and an elastic member 442, wherein the pushing block 441 is movably disposed in the shaft hole 421 along the front-back direction and is located at the front side of the connecting shaft 410, so that when the connecting shaft 410 is driven to move forward to a set distance, the pushing block 441 is pushed to move forward; one end of the elastic member 442 is connected to the pushing block 441, and the other end is fixed with respect to the clamp body 100. In this way, the forward movement of the connection shaft 410 and the pull sleeve 420 can be divided into free movement before abutting against the push block 441 and elastic movement after abutting against the push block 441, and the elastic member 442, for example, a spring, can realize the forward and backward elastic movement of the connection shaft 410, the pull sleeve 420 and the push block 441 by extending or compressing the same in the forward and backward directions.

The screw 430 may be integrally provided with the support portion 310 of the pressing portion 320, or detachably coupled thereto after being separately provided.

Specifically, the driving assembly 400 may further include a connection block 443 and a guide rod 444, the connection block 443 being connected to the front end of the elastic member 442; the elastic member 442 is provided with a guide hole through in the front-rear direction, or the spiral inner ring of the elastic member 442 provided as a spring directly constitutes the guide hole. The guide rod 444 is connected between the push block 441 and the connection block 443 and is movably connected with the guide hole in the front-rear direction, so that the front-rear telescopic stroke of the elastic member 442 can be accurately guided, and the structural strength of the elastic member 442 can be increased. The connection block 443 may be received within the mounting cavity 110 or into the channel 213. When the connection block 443 is fixedly connected with the jig body 100 or the base 200, the guide rod 444 may be slidably provided in the front-rear direction with respect to the connection block 443; or the guide 444 may be provided to remain fixedly coupled to the connection block 443 when the connection block 443 is slidably disposed in a front-to-rear direction with respect to the clamp body 100 or the base 200.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims (10)

1. A face gear clamp, comprising:

a clamp body extending in a front-rear direction, a rear end of the clamp body being adapted to be fixed to a machine tool;

the base is arranged at the front end of the clamp body in a protruding mode, is fixedly connected with the clamp body, and is provided with a reference surface for the end face of the face gear to abut against, and positioning convex teeth which are used for extending into the tooth gaps of the face gear in a protruding mode;

the end pressing piece is arranged at the front end of the clamp body in a protruding mode, the end pressing piece comprises a supporting portion located at the side of the base and a pressing portion formed by extending laterally from the supporting portion, the pressing portion is arranged in a front-back direction in a translatable mode and is arranged in a rotatable mode along an axis extending in the front-back direction, so that a pressing stroke capable of translating backwards and rotating towards the base and a release stroke capable of translating forwards and/or rotating in a direction away from the base are achieved, and the pressing portion presses an end face gear on the reference surface in the pressing stroke; the method comprises the steps of,

and the driving assembly is arranged on the clamp body and connected with the end pressing piece so as to drive the pressing part to switch between the pressing stroke and the releasing stroke.

2. The face gear clamp of claim 1, wherein the base comprises:

the fixed seat is detachably connected with the front end of the clamp body;

the calibration ring is detachably connected with the front end of the fixed seat and is positioned in the middle of the fixed seat; the method comprises the steps of,

the reference blocks are distributed at intervals along the peripheral direction of the calibration ring, are detachably connected with the fixing base respectively, and the front end surfaces of the reference blocks form the reference surface.

3. The face gear clamp of claim 2, wherein a plurality of said reference blocks include at least a first reference block and at least a second reference block, wherein only said reference surface of said second reference block is convexly provided with said positioning teeth; and/or the number of the groups of groups,

the positioning convex teeth are arranged in a gradually-enlarged width manner in a direction away from the calibration ring in the radial direction.

4. A face gear holder according to claim 3, wherein each of the first reference blocks and each of the second reference blocks are alternately arranged in order along the outer circumferential direction of the calibration ring.

5. The face gear clamp of claim 2, wherein at least a portion of the reference block is movably adjustable along a radial direction of the calibration ring;

one of the fixed seat and the reference block extends along the radial direction of the calibration ring and is provided with a first sliding groove, the other one of the fixed seat and the reference block is provided with a first sliding protrusion, and the first sliding protrusion is in sliding connection with the first sliding groove.

6. A face gear holder as claimed in claim 3, wherein at least part of said reference blocks are movably adjustable in a tangential direction of said calibration ring;

one of the fixed seat and the reference block extends along the tangential direction of the calibration ring and is provided with a second sliding groove, and the other one of the fixed seat and the reference block is provided with a second sliding protrusion which is in sliding connection with the second sliding groove.

7. The face gear clamp of claim 1, wherein the front projection of the press portion on the front face of the base is offset from the positioning teeth.

8. The face gear clamp according to claim 1, wherein a passage is formed in the middle of the base and the corresponding portion of the clamp body in a front-rear direction;

the clamp of the face gear further comprises a cover body, wherein the cover body is connected with the base, and covers the front end passage opening of the passage.

9. The face gear clamp of any one of claims 1 to 8, wherein the clamp body is internally formed with a mounting cavity, the drive assembly comprising:

the connecting shaft is arranged in the mounting cavity, and the rear end of the connecting shaft extends out of the mounting cavity and is connected with a linear output shaft of a driver of the machine tool;

the pull sleeve is arranged in the mounting cavity, a shaft hole penetrates through the pull sleeve along the front-back direction, the shaft hole is sleeved on the outer side of the connecting shaft, so that when the connecting shaft is driven to move forwards, the pull sleeve is provided with a threaded hole, and the threaded hole and the shaft hole are arranged at intervals; the method comprises the steps of,

one end of the screw rod is arranged in the mounting cavity and is in threaded connection with the threaded hole, and the other end of the screw rod extends outwards from the mounting cavity and is in transmission connection with the end pressing piece, so that the pressing part is driven to perform the pressing stroke when the pull sleeve moves forwards.

10. The face gear clamp of claim 9, wherein the drive assembly further comprises:

the pushing block is movably arranged in the shaft hole along the front-back direction and is positioned at the front side of the connecting shaft, so that when the connecting shaft is driven to move forwards to a set distance, the pushing block is pushed to move forwards; the method comprises the steps of,

and one end of the elastic piece is connected with the pushing block, and the other end of the elastic piece is fixed relative to the clamp body.