CN210023987U

CN210023987U - Gear shaping clamp

Info

Publication number: CN210023987U
Application number: CN201920622830.6U
Authority: CN
Inventors: 张立辉; 易苏军
Original assignee: Zhuzhou Gear Co Ltd
Current assignee: Zhuzhou Gear Co Ltd
Priority date: 2019-04-30
Filing date: 2019-04-30
Publication date: 2020-02-07
Anticipated expiration: 2029-04-30

Abstract

The utility model relates to a gear shaping anchor clamps includes fixing base, elastic sleeve and connecting piece. One end of the fixed seat is provided with a circular truncated cone-shaped convex column and a propping surface which is arranged along the circumferential direction of the convex column and is vertical to the central axis of the convex column. A first scrap discharging through groove is formed in the fixing seat. An opening of the first scrap discharge through groove is positioned on the abutting surface. The elastic sleeve is detachably sleeved on the convex column. The shape of the inner wall of the elastic sleeve is matched with the shape of the side wall of the convex column. The side wall of the elastic sleeve is provided with a second chip removal through groove extending to the abutting surface. The connecting piece is slidably arranged through the fixed seat. One end of the connecting piece is fixedly connected with the elastic sleeve, and the other end of the connecting piece is used for driving the elastic sleeve to slide along the axial direction of the convex column. Wherein the first chip removal through groove is arranged on the opening of the abutting surface and communicated with the second chip removal through groove. Therefore, the gear shaping clamp has higher positioning precision and improves the processing efficiency of the part to be processed.

Description

Gear shaping clamp

Technical Field

The utility model relates to a gear machining technical field especially relates to a gear shaping anchor clamps.

Background

With the continuous development of manufacturing industry, the variety of gears is more and more, and the requirements of the gears on the positioning fixture used in the machining process are higher and higher. Particularly, one end of the inner hole is provided with a disc gear with an inner combination tooth or an inner spline structure, and the inner combination tooth or the inner spline structure of the inner hole of the disc gear is usually processed after being clamped by a triangular chuck. The mode of triangle chuck location, its positioning accuracy is lower relatively, and has the clearance between three jack catch of triangle chuck and the plane screw thread for this clearance is got into very easily to the iron fillings that produce in the course of working, can influence positioning accuracy after using for a long time.

In order to improve the accuracy of positioning the ring gear, a collet-type jig is generally used to position the ring gear. However, in the process of machining the inner coupling teeth or the inner spline structures of the disc gears, the expansion sleeve type clamp has the problem that iron chips generated by machining the inner coupling teeth or the inner spline structures are accumulated, so that the disc gears are stopped to clean the iron chips at intervals when needed in the machining process, and the machining efficiency of the disc gears is greatly influenced.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a gear shaping jig capable of improving the machining efficiency of a disc gear, in order to solve the problem that the conventional expanding sleeve type jig affects the machining efficiency of the disc gear.

A gear shaping clamp, comprising:

the fixing seat is provided with a first scrap discharging through groove, and an opening of the first scrap discharging through groove is positioned on the abutting surface;

the elastic sleeve is detachably sleeved on the convex column, the shape of the inner wall of the elastic sleeve is matched with that of the side wall of the convex column, and the side wall of the elastic sleeve is provided with a second chip removal through groove extending to the abutting surface; and

the connecting piece is in a long strip shape and slidably penetrates through the fixed seat, one end of the connecting piece is fixedly connected with the elastic sleeve, and the other end of the connecting piece is used for driving the elastic sleeve to slide along the axial direction of the convex column;

the first chip removal through groove is formed in the opening in the abutting surface and communicated with the second chip removal through groove.

In one embodiment, the first dust-removing through groove is formed in the outer side surface of the fixing seat.

In one embodiment, the extending direction of the first dust discharge through groove is inclined relative to the axial direction of the convex column.

In one embodiment, the second debris ejection slot is a U-shaped slot.

In one embodiment, the first chip removal is led to the groove and the second chip removal is led to the groove and is a plurality of, and is a plurality of the first chip removal is led to the groove and is a plurality of the second chip removal is led to the groove and follows respectively the circumference of fixing base reaches the circumference interval setting of elastic sleeve, and is a plurality of the first chip removal is led to the groove and is a plurality of the second chip removal leads to the groove one-to-one respectively.

In one embodiment, the edge of the abutting surface facing the convex column is recessed to form a diversion groove extending along the circumferential direction of the convex column, and the first and second chip discharge through grooves are communicated with the diversion groove.

In one embodiment, the fixing seat comprises a base and a positioning disc fixed on the base, the base and the positioning disc are coaxially arranged, and the convex column is formed at one end of the positioning disc far away from the base.

In one embodiment, a plurality of first notches and a plurality of second notches are respectively arranged at two ends of the elastic sleeve at intervals along the circumferential direction, the first notches and the adjacent second notches are arranged in a staggered mode, and the axial size of the first notches and the axial size of the second notches along the elastic sleeve are smaller than that of the elastic sleeve.

In one embodiment, the first notch is disposed at a position where the second chip removal through groove is formed in the elastic sleeve, an adjusting groove extending along the axial direction of the elastic sleeve is formed in a position where the outer side surface of the elastic sleeve is opposite to the second notch, and the size of the adjusting groove along the axial direction of the elastic sleeve is the same as the axial size of the elastic sleeve.

In one embodiment, the connecting piece comprises a pull rod and a pressing plate arranged at one end of the pull rod, and one end of the elastic sleeve, which is far away from the abutting surface, can abut against the pressing plate.

In one embodiment, the surface of the pressure plate facing away from the tie rods is convex to form an outer convex surface.

In one embodiment, the edge of the pressure plate is provided with a third chip removal through groove communicated with the second chip removal through groove.

In one embodiment, a convex block is arranged on the side wall of one end of the connecting piece, which is far away from the convex column.

In one embodiment, the side wall of the convex column is provided with a long strip-shaped through hole extending along the axial direction of the convex column, the gear shaping clamp further comprises a fixed connecting rod slidably penetrating through the long strip-shaped through hole, one end of the fixed connecting rod is detachably connected with the elastic sleeve, and the other end of the fixed connecting rod is detachably connected with the connecting piece.

When the gear shaping clamp is used, the part to be machined is sleeved on the elastic sleeve and is in contact with the abutting surface, and the connecting piece moves towards the abutting surface, so that the elastic sleeve expands in an inner hole of the part to be machined, and the part to be machined is positioned and clamped on the gear shaping clamp. Therefore, the arrangement of the elastic sleeve enables the gear shaping clamp to have high radial positioning accuracy. Moreover, when the inner combination teeth or the inner spline structures of the parts to be machined are subjected to gear shaping machining, the generated scrap iron can enter the second chip removal through groove along with the cooling liquid, then flows into the first chip removal through groove from the second chip removal through groove, and is discharged out of the gear shaping clamp through the first chip removal through groove. From this, the setting that first chip removal led to the groove and the logical groove of second chip removal can make the iron fillings that produce in the gear shaping processing continuously discharge, has avoided iron fillings to combine the condition that tooth or internal spline structure department piled up in waiting to process the part, has improved the machining efficiency who waits to process the part effectively. Therefore, the gear shaping clamp has higher positioning precision and improves the processing efficiency of the part to be processed.

Drawings

Fig. 1 is a schematic structural view of a gear shaping jig according to a preferred embodiment of the present invention;

FIG. 2 is a schematic view of the gear shaping fixture shown in FIG. 1 in a state of clamping a part to be machined;

FIG. 3 is a schematic structural view of a fixing seat in the gear shaping fixture shown in FIG. 1;

FIG. 4 is a top view of the fixing base shown in FIG. 3;

FIG. 5 is a schematic view of the structure of the elastic sleeve in the gear shaping fixture of FIG. 1;

FIG. 6 is a cross-sectional view A-A of the elastomeric sleeve of FIG. 5;

FIG. 7 is a schematic view of a connection piece in the gear shaping fixture of FIG. 1;

fig. 8 is a schematic structural view of a pressure plate in the connector shown in fig. 7.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 and 2, a gear shaping fixture 100 according to a preferred embodiment of the present invention includes a fixing base 110, an elastic sleeve 120 and a connecting member 130. The gear shaping fixture 100 is mainly used for positioning a part 200 to be machined with an inner hole in the gear shaping machining process. Specifically, in the present embodiment, the part to be machined 200 is a ring gear.

Referring to fig. 3 and 4, the fixing base 110 mainly plays a role of fixing and supporting. Generally, the fixing base 110 is made of a material with a relatively high strength, such as stainless steel, cast steel, alloy steel, cast iron, etc., so that the fixing base 110 has a relatively high bearing capacity. One end of the fixing base 110 is formed with a truncated cone-shaped convex column 111 and a butting surface 112 which is arranged along the circumferential direction of the convex column 111 and is perpendicular to the central axis of the convex column 111. The fixing base 110 is provided with a first dust discharging through groove 113. The opening of the first dust-removing through groove 113 is located on the abutting surface 112. During the gear shaping process, the fixed seat 110 is fixedly connected with a workbench of a gear shaping machine tool.

Further, in the present embodiment, the fixing base 110 includes a base 114 and a positioning plate 115 fixed to one end of the base 114. The base 114 is coaxially disposed with the puck 115. The positioning plate 115 is formed with a convex column 111 at an end away from the base 114. Specifically, during the gear shaping process, the base 114 is fixedly connected to the table of the gear shaping machine.

The structural characteristics of the mounting block 110 make it unsuitable for machining as a whole during part machining. The fixing seat 110 is divided into the base 114 and the positioning plate 115 to be formed separately, so that the processing difficulty can be reduced, the processing precision can be improved, the material waste is less, and the processing cost is lower.

Further, in the present embodiment, an installation portion 116 is disposed at an end of the fixing base 110 away from the protruding pillar 111 along a circumferential direction of the fixing base 110. When the gear shaping jig 100 is installed, the mounting portion 116 is fixedly connected to a table of the gear shaping machine. Thus, the provision of the mounting portion 116 facilitates the installation of the gear shaping jig 100.

Further, in this embodiment, the gear shaping clamp 100 also includes a threaded fastener 140. The mounting portion 116 is provided with a mounting hole 1161, one end of the threaded fastener 140 penetrates through the mounting hole 1161, and the other end of the threaded fastener is used for being in threaded connection with a workbench of the gear shaping machine tool. When the gear shaping clamp 100 is installed, the gear shaping clamp 100 can be assembled and disassembled only by screwing or unscrewing the threaded fastener 140. The threaded fasteners 140 may be screws, bolts, threaded rods, or the like. In particular, in the present embodiment, the threaded fastener 140 is a screw.

Specifically, the threaded fasteners 140 and the mounting holes 1161 are provided in plural numbers. A plurality of mounting holes 1161 are provided at intervals in the circumferential direction of the fixing base 110. Thus, when the gear shaping jig 100 is mounted, the provision of the plurality of threaded fasteners 140 and the plurality of mounting holes 1161 makes the connection between the gear shaping jig 100 and the table of the gear shaping machine tool more secure, and also makes the gear shaping jig 100 more stable on the gear shaping machine tool.

Referring to fig. 5 and 6, the elastic sleeve 120 is detachably sleeved on the protruding pillar 111. The shape of the inner wall of the elastic sleeve 120 matches the shape of the side wall of the convex column 111. The side wall of the elastic sleeve 120 is provided with a second chip discharging through groove 121 extending to the abutting surface 112.

The elastic sleeve 120 mainly plays a role of fixing and positioning, and is used for fixing and radially positioning the part 200 to be machined. Generally, the elastic sleeve 120 is made of a material having elastic deformation properties, such as spring steel, high carbon steel, or the like. In the gear shaping process, the part 200 to be machined is sleeved on the outer surface of the elastic sleeve 120. Therefore, the outer diameter of the elastic sleeve 120 matches the inner diameter of the tool-less part.

Because the shape of the inner wall of the elastic sleeve 120 is matched with the shape of the side wall of the convex column 111, the inner wall of the elastic sleeve 120 and the side wall of the convex column 111 both have conicity. In the installation process of the part 200 to be machined, after the part 200 to be machined is sleeved on the elastic sleeve 120, the elastic sleeve 120 slides towards the abutting surface 112, and at the moment, the outer diameter of the elastic sleeve 120 is increased under the action of the convex column 111, so that the elastic sleeve 120 and the part 200 to be machined form interference fit, the part 200 to be machined can be radially positioned without a gap through the elastic sleeve 120, and the positioning precision of the gear shaping clamp 100 is greatly improved.

In the present embodiment, a plurality of first notches 122 and a plurality of second notches 123 are respectively disposed at two ends of the elastic sleeve 120 along the circumferential direction at intervals. The first notch 122 and the adjacent second notch 123 are staggered. The first gap 122 and the second gap 123 have a smaller dimension along the axial direction of the elastic sleeve 120 than the axial dimension of the elastic sleeve 120. During the process of clamping or disassembling the part 200 to be machined, along with the sliding of the elastic sleeve 120 towards or away from the abutting surface 112, the size of the first gap 122 and the second gap 123 along the circumferential direction of the elastic sleeve 120 may change. Therefore, the first gap 122 and the second gap 123 are disposed, so that the elastic deformation performance of the elastic sleeve 120 along the radial direction thereof is better.

Specifically, the first notches 122 are respectively corresponding to the second notches 123, and the first notches 122 and the corresponding second notches 123 are staggered. So that the elastic sleeve 120 deforms more uniformly along the radial direction, and the radial positioning effect of the part 200 to be processed is better.

Further, in this embodiment, the first notch 122 is disposed at a position where the elastic sleeve 120 has the second debris discharging through slot 121. The outer side surface of the elastic sleeve 200 is provided with an adjusting groove 124 extending along the axial direction of the elastic sleeve 120 at a position opposite to the second notch 123. The dimension of the adjustment groove 124 in the axial direction of the elastic sleeve 120 is the same as the axial dimension of the elastic sleeve 120. Therefore, the adjusting groove 124 penetrates through the elastic sleeve 120 along the axial direction of the elastic sleeve 120, the second notch 123 is arranged at the position where the second chip removal through groove 121 is not arranged on the elastic sleeve 120, so that the wall thickness of the second notch 123 arranged on the elastic sleeve 120 is larger than that of the first notch 122 arranged on the elastic sleeve, and the wall thickness of the second notch 123 arranged on the elastic sleeve 120 can be reduced by the adjusting groove 124, so that the elastic sleeve 200 can be uniformly elastically deformed along the radial direction of the elastic sleeve, and the radial positioning precision of the gear shaping clamp 100 on the part 200 to be machined is ensured.

Referring also to fig. 7, the connecting member 130 is in the shape of a long strip. The connecting member 130 slidably passes through the fixing base 110. One end of the connecting member 130 is fixedly connected to the elastic sleeve 120, and the other end is used for driving the elastic sleeve 120 to slide along the axial direction of the convex column 111. The connecting member 130 mainly performs connecting and adjusting functions. The connecting member 130 is usually made of a metal material with a relatively strong comprehensive mechanical property, such as carbon steel or alloy steel, so that the connecting member 130 has relatively good tensile strength and torsional rigidity.

In the gear shaping process, one end of the connecting member 130, which is far away from the convex column 14, is in transmission connection with a workbench cylinder of the gear shaping machine, and the workbench cylinder can drive the connecting member 130 to move along the length direction of the connecting member 130, so as to drive the elastic sleeve 120 to slide along the abutting surface 112 facing or back to, so that the outer diameter of the elastic sleeve 120 is expanded or reduced. Specifically, in the gear shaping machine tool, the workbench oil cylinder is in transmission connection with one end of the connecting piece 130 far away from the convex column 111 through a connecting rod.

In the installation process of the part 200 to be processed, after the part 200 to be processed is sleeved on the elastic sleeve 120, the elastic sleeve 120 slides towards the direction of the abutting surface 112 under the driving of the connecting piece 130, and at the moment, the outer diameter of the elastic sleeve 120 is increased under the action of the convex column 111, so that the elastic sleeve 120 and the part 200 to be processed form interference fit, and the part 200 to be processed is more convenient to install. In the process of detaching the to-be-machined part 200, the elastic sleeve 120 slides back to the abutting surface 112 under the driving of the connecting piece 130, and at the moment, the outer diameter of the elastic sleeve 120 is reduced, so that a gap is generated between the to-be-machined part 200 and the elastic sleeve 120, and the to-be-machined part 200 is more convenient to detach. Therefore, the connecting member 130 is provided, so that the part 200 to be processed is more convenient to mount and dismount.

Referring to fig. 1 to 4 again, in the present embodiment, the sidewall of the convex pillar 111 is provided with a long strip-shaped through hole 1111 extending along the axial direction of the convex pillar 111. The gear shaping fixture 100 further includes a fixed connecting rod 150 slidably disposed through the elongated through hole 1111. One end of the fixed link 150 is detachably connected to the elastic sheath 120, and the other end is detachably connected to the connection member 130.

Referring to fig. 2 to 7 again, in order to facilitate the installation and removal of the to-be-machined part 200, the connecting member 130 slides along the axial direction thereof to drive the elastic sleeve 120 to slide, so that the side wall of the elastic sleeve 120 expands or contracts. When the gear shaping clamp 100 is assembled, the convex column 111 is sleeved with the elastic sleeve 120, and after the connecting element 130 is inserted into the fixing base 110, the connecting element 130 is fixedly connected with the elastic sleeve 120 by the fixing connecting rod 150 penetrating through the elongated through hole 1111. Thus, the arrangement of the fixed connection rod 150 facilitates the assembly of the elastic sheath 120 and the connection member 130.

Moreover, the arrangement of the strip-shaped through hole 1111 and the fixed connecting rod 150 can prevent the elastic sleeve 120, the fixed seat 110 and the connecting member 130 from rotating circumferentially, so that the first chip removal through groove 113 and the second chip removal through groove 121 are staggered, thereby effectively ensuring the smoothness of the connecting channel. The fixed connection bar 150 may be a bolt, a screw, a cylindrical pin, etc.

Specifically, the fixed connecting rod 150 is a cylindrical pin. The side wall of the elastic sleeve 120 is provided with a fixing hole 125 at a position opposite to the elongated through hole 1111. The connecting member 130 is provided with a connecting hole 134 at a position opposite to the elongated through hole 1111. The cylindrical pin sequentially penetrates through the fixing hole 125, the elongated through hole 1111 and the connecting hole 134, and is clamped with the fixing hole 125 and the connecting hole 134 respectively. Thus, the fixing link 150 is provided as a cylindrical pin, so that the assembly of the gear shaping jig 100 is more convenient.

Referring to fig. 4 again, the first chip discharging through groove 113 is disposed on the opening of the abutting surface and is communicated with the second chip discharging through groove 121. When the inner combination teeth or the inner spline structure of the part 200 to be machined are subjected to gear shaping, the generated scrap iron enters the second scrap discharging through groove 121 along with the cooling liquid, flows into the first scrap discharging through groove 113 through the second scrap discharging through groove 121, and is discharged out of the gear shaping clamp 100 through the first scrap discharging through groove 113. Consequently, the setting that first chip removal leads to groove 113 and second chip removal leads to groove 121 can make iron fillings continuously discharge, has reduced the probability that takes place the circumstances such as shut down clearance iron fillings effectively for the machining efficiency of treating processing part 200 is higher.

In the present embodiment, the first dust discharging through groove 113 is opened on the outer side surface of the fixing base 110. Thus, the first dust discharge through groove 113 is formed with an opening communicating with the outside of the gear shaping jig 100 on the outer side surface of the fixed base 110. Therefore, compare with the condition that first bits of scraps link groove 113 set up in other positions, first bits of scraps link groove 113 sets up in the lateral surface of fixing base 110, and first bits of scraps link groove 113 is the biggest with the opening of the outside intercommunication one end of gear shaping anchor clamps 100 to make the discharge rate of iron fillings faster. Moreover, the first chip-removing through groove 113 is formed in the outer side surface of the fixing seat 110, so that the first chip-removing through groove 113 can be machined more conveniently.

Referring to fig. 3 again, in the present embodiment, the extending direction of the first dust discharging through slot 113 is inclined relative to the axial direction of the convex pillar 111. Thus, the extending path of the first dust-removing through groove 113 is a straight line or an arc shape that is obliquely arranged with respect to the central axis of the stud 111. Therefore, the extending direction of the first scrap discharging through groove 113 is inclined relative to the axial direction of the convex column 111, so that the scrap iron flows more smoothly in the first scrap discharging through groove 113.

In this embodiment, the second debris discharging through slot 121 is opened on the outer side surface of the side wall of the elastic sleeve 120. Therefore, in the gear shaping process, a channel with two open ends is formed between the second scrap discharge through groove 121 and the inner hole wall of the part 200 to be machined, and scrap iron enters from one end of the channel far away from the abutting surface 112 and enters into the first scrap discharge through groove 113 from one end close to the abutting surface 112. Therefore, the second chip removal through groove 121 is formed in the outer side surface of the side wall of the elastic sleeve 120, so that the flow area of a channel formed between the second chip removal through groove 121 and the inner hole wall of the part 200 to be machined is larger, the discharge speed of the iron chips is higher, and the machining of the second chip removal through groove 121 is more convenient.

Referring to fig. 5 again, in the present embodiment, the second debris discharging through slot 121 is a U-shaped slot. The second chip removal through groove 121 is arranged to be a U-shaped groove, so that the situation that iron chips are jammed when flowing in the second chip removal through groove 121 can be avoided, and the iron chips can flow more smoothly in the second chip removal through groove 121.

In the present embodiment, there are a plurality of first and second

debris discharge slots

113 and 121. The first and second chip discharge through

grooves

113 and 121 are disposed at intervals along the circumferential direction of the fixing base 110 and the circumferential direction of the elastic sleeve 120, respectively. The first chip discharge through slots 113 correspond to the second chip discharge through slots 121 one by one. Therefore, in the gear shaping process, the generated scrap iron can be discharged along a plurality of groups of channels formed by the second scrap discharging through groove 121 and the corresponding first scrap discharging through groove 113, the discharge speed of the scrap iron is effectively improved, the probability that the scrap iron is blocked or even enters the gear shaping clamp 100 is reduced, and the positioning precision of the gear shaping clamp 100 is further ensured.

Referring to fig. 1, fig. 2 and fig. 7 again, in the present embodiment, the connecting member 130 includes a pull rod 131 and a pressing plate 132 disposed at one end of the pull rod 131. One end of the elastic sleeve 120 away from the abutting surface 112 abuts against the pressing plate 132.

When the pull rod 131 drives the pressing plate 132 to move towards the abutting surface 112, so that the pressing plate 132 abuts against one end of the elastic sleeve 120 away from the abutting surface 112, the pressing plate 132 presses the elastic sleeve 120 to expand the outer diameter of the elastic sleeve 120, so as to realize gapless radial positioning of the part 200 to be machined; when the pull rod 131 drives the pressing plate 132 to move back to the abutting surface 112, so that the pressing plate 132 is separated from one end of the elastic sleeve 120 away from the abutting surface 112, the pull rod 131 drives the elastic sleeve 120 to move back to the abutting surface 112, so that the side wall of the elastic sleeve 120 is contracted, and a gap is formed between the part 200 to be processed and the elastic sleeve 120, so that the part 200 to be processed can be conveniently detached. Therefore, the connecting member 130 is provided with the pull rod 131 and the pressing plate 132, so that the part 200 to be processed can be more conveniently assembled and disassembled.

Further, in the present embodiment, the surface of the pressure plate 132 facing away from the pull rod 131 is convexly formed into an outer convex surface 1321. Thus, the end of the pressing plate 132 opposite to the pull rod 131 is high in the middle and low in the periphery. Therefore, the end surface of the pressing plate 132, which faces away from the pull rod 131, is provided with the convex surface 1321, so that the probability of accumulation of iron chips on the pressing plate 132 and other conditions during gear shaping processing is further reduced, the arrangement of the convex surface 1321 is favorable for quick discharge of the iron chips, and the processing efficiency of the part 200 to be processed is effectively ensured.

Referring to fig. 8 again, in the present embodiment, a third debris discharging through slot 1322 is formed at the edge of the pressing plate 132 and is communicated with the second debris discharging through slot 121. Therefore, the third scrap discharge channel 1322, the second scrap discharge channel 121 and the first scrap discharge channel 113 are sequentially communicated to form a scrap discharge passage. The iron pieces generated in the gear shaping process can be discharged along the chip discharge passage. Moreover, the third scrap discharging through groove 1322 enables scrap iron generated in gear shaping to smoothly reach the second scrap discharging through groove 121 and to be discharged through the first scrap discharging through groove 113, so that the third scrap discharging through groove 1322 enables the scrap iron to be discharged more smoothly.

Further, in this embodiment, the radial cross-sectional shape of the third debris ejection slot 1322 is arcuate. The radial cross section of the third chip removal through groove 1322 is arc-shaped, so that the blockage of the iron chip groove when the iron chip groove flows in the third chip removal through groove 1322 can be avoided, and the iron chips can flow more smoothly in the third chip removal through groove 1322.

Further, the number of the third chip discharge through slots 1322 is plural, and the plural third chip discharge through slots 1322 are arranged along the circumferential direction of the pressure plate 132. And the plurality of third chip discharge through slots 1322 correspond to the plurality of second chip discharge through slots 121 one by one, respectively.

Referring to fig. 7 again, in the present embodiment, a protrusion 133 is disposed on a side wall of the connecting member 130 away from one end of the post 111. When the gear shaping clamp 100 is installed, one end of the connecting piece 130, which is far away from the convex column 111, is in transmission connection with a workbench oil cylinder of a gear shaping machine through a connecting rod, one end of the connecting piece 130 is provided with a convex block 133, a matching structure matched with the convex block 133 is formed at one end of the connecting rod, which is connected with the connecting piece 130, and the convex block 133 is matched with the matching structure, so that the connecting piece 130 can be connected with the connecting rod. Therefore, the protrusion 133 is provided to facilitate the connection between the connection member 130 and the table cylinder.

When the gear shaping clamp 100 is used, the to-be-machined part 200 is sleeved on the elastic sleeve 120 and contacts with the abutting surface 112, and the connecting piece 130 moves towards the abutting surface 112, so that the elastic sleeve 120 is expanded in an inner hole of the to-be-machined part 200, and the to-be-machined part 200 is positioned and clamped on the gear shaping clamp 100. Thus, the provision of the resilient sleeve 120 provides the gear shaping clamp 100 with a high degree of radial positioning accuracy. Moreover, when the internal coupling teeth or the internal spline structure of the part 200 to be machined are subjected to gear shaping, the generated scrap iron enters the second scrap discharging through groove 121 together with the coolant, flows into the first scrap discharging through groove 113 through the second scrap discharging through groove 121, and is discharged out of the gear shaping clamp 100 through the first scrap discharging through groove 113. From this, the setting that first chip removal leads to groove 113 and second chip removal leads to groove 121 can make the iron fillings that produce in the gear shaping processing continuously discharge, has avoided iron fillings to combine the accumulational condition of tooth or internal spline structure department in waiting to process part 200, has improved the machining efficiency who waits to process part 200 effectively. Therefore, the gear shaping clamp 100 has high positioning accuracy and improves the processing efficiency of the part 200 to be processed.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A gear shaping clamp, comprising:

2. The gear shaping clamp of claim 1 wherein the first chip removing through slot opens on an outer side surface of the holder.

3. The gear shaping clamp of claim 2 wherein the direction of extension of the first debris release channel is disposed obliquely to the axial direction of the stud.

4. The gear shaping clamp of claim 1 wherein the second debris ejection channel is a U-shaped channel.

5. The gear shaping clamp of claim 1, wherein the first chip removal through groove and the second chip removal through groove are both multiple, the first chip removal through groove and the second chip removal through groove are respectively arranged along the circumferential direction of the fixing seat and the circumferential direction of the elastic sleeve at intervals, and the first chip removal through groove and the second chip removal through grooves are respectively in one-to-one correspondence.

6. The gear shaping fixture of claim 1, wherein the fixing seat comprises a base and a positioning plate fixed on the base, the base and the positioning plate are coaxially arranged, and the protruding column is formed at one end of the positioning plate far away from the base.

7. The gear shaping fixture of claim 1, wherein a plurality of first notches and a plurality of second notches are respectively formed at two ends of the elastic sleeve at intervals along the circumferential direction, the first notches and the adjacent second notches are arranged in a staggered manner, and the axial size of the first notches and the axial size of the second notches along the elastic sleeve are smaller than that of the elastic sleeve.

8. The gear shaping clamp according to claim 7, wherein the first notch is formed at a position where the second chip removal through groove is formed in the elastic sleeve, an adjusting groove extending in the axial direction of the elastic sleeve is formed in a position where the outer side surface of the elastic sleeve is opposite to the second notch, and the size of the adjusting groove in the axial direction of the elastic sleeve is the same as the axial size of the elastic sleeve.

9. The gear shaping clamp of claim 1, wherein the connecting member comprises a pull rod and a pressing plate arranged at one end of the pull rod, and one end of the elastic sleeve, which is far away from the abutting surface, can abut against the pressing plate.

10. The gear shaping clamp of claim 9 wherein the edge of the pressure plate defines a third chip ejection channel in communication with the second chip ejection channel.