CN114406365A

CN114406365A - Gear turning clamp

Info

Publication number: CN114406365A
Application number: CN202111630549.5A
Authority: CN
Inventors: 沈磊; 朱亮; 周裕华
Original assignee: Zhejiang Chiyang Precision Tools Co ltd
Current assignee: Zhejiang Chiyang Precision Tools Co ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-04-29
Anticipated expiration: 2041-12-28
Also published as: CN114406365B

Abstract

The utility model relates to a car tooth anchor clamps, including the anchor clamps main part, the cylindricality spout has been seted up to the coaxial on one side of anchor clamps main part, there is the cover of drawing along the axis sliding connection of cylindricality spout on the cylindricality spout, draw and to dismantle the cover that rises that is connected with and is used for the centre gripping work piece on the cover, first conical surface has been seted up on the circumference outer wall of the cover that rises, set up the second conical surface that matches with first conical surface on the circumference inner wall of cylindricality spout, first conical surface laminates the second conical surface all the time and slides, the connection can be dismantled on pulling the cover to the pull rod, the one end orientation of pull rod is kept away from the cover one side that rises and is stretched out the anchor clamps main part. Pulling the pull rod, the pull rod drives through the pull sleeve that rises to overlap and slide on the second inclined plane to make the cover that rises press from both sides tight pull rod, because the cover circumference inner wall butt that rises on the circumference outer wall of work piece, the clamping-force that the work piece circumferential direction received can be more even, and the work piece is difficult for breaking away from the cover that rises simultaneously, thereby makes the work piece more stable at the in-process of car tooth, improves the precision of work piece car tooth.

Description

Gear turning clamp

Technical Field

The application relates to the field of clamps, in particular to a turning tooth clamp.

Background

The jig is a device for fixing a processing object to occupy a correct position for receiving construction or inspection in a machine manufacturing process. When a workpiece is to be machined, a single workpiece to be machined is usually fixed to a fixture of a machine tool table, and then the workpiece is machined.

As shown in fig. 1, the related art tooling fixture includes a base 3, a driving member 32, and two clamping jaws 31 disposed opposite to each other, where the two clamping jaws 31 are slidably connected to the base 3 along a direction parallel to each other, and the driving member 32 drives the two clamping jaws 31 to slide along a direction of one side approaching to or departing from each other.

The above-mentioned related technical solutions have the following drawbacks: when the tool clamp is used for clamping a workpiece to perform gear turning on the workpiece, the two clamping jaws respectively apply force to clamp the workpiece on two sides of the workpiece, so that when the workpiece rotates to perform gear turning, the precision of the gear turning of the workpiece is reduced due to uneven clamping force applied to the workpiece, and the possibility that the workpiece is separated from the clamping jaws is increased.

Disclosure of Invention

In order to improve the precision of work piece car tooth, this application provides a car tooth anchor clamps.

The application provides a turning tooth anchor clamps adopts following technical scheme:

a lathe tooth clamp comprises a clamp body, wherein a cylindrical sliding groove is coaxially formed in one side face of the clamp body, a pull sleeve is connected to the cylindrical sliding groove in a sliding mode along the axis of the cylindrical sliding groove, an expansion sleeve used for clamping a workpiece is detachably connected to the pull sleeve, the expansion sleeve has deformability, a first conical surface is formed in the circumferential outer wall of the expansion sleeve, a second conical surface matched with the first conical surface is formed in the circumferential inner wall of the cylindrical sliding groove, the end, close to the bottom wall of the cylindrical sliding groove, of the second conical surface is arranged in a flaring mode to the end, far away from the bottom wall of the cylindrical sliding groove, the first conical surface of the expansion sleeve is always attached to the second conical surface of the cylindrical sliding groove to slide, mounting holes with two communicated ends are coaxially formed in the pull sleeve, a pull rod penetrates through the mounting holes and is detachably connected to the pull sleeve, and is slidably connected to the clamp body along the axis direction parallel to the clamp body, one end of the pull rod extends out of the clamp body towards one side far away from the expansion sleeve and supplies an external power source to carry out reciprocating driving, and when the expansion sleeve clamps the workpiece, the circumferential outer wall of the workpiece is tightly attached to the circumferential inner wall of the expansion sleeve.

Through adopting above-mentioned technical scheme, through the pulling pull rod, the pull rod drives through drawing the cover and rises the cover and slide on the second inclined plane to make the cover that rises press from both sides tight pull rod, because the cover circumference inner wall butt that rises on the circumference outer wall of work piece, the clamping-force that work piece circumferential direction received can be more even, and the work piece also is difficult for breaking away from the cover that rises simultaneously, thereby makes the work piece more stable at the in-process of car tooth, improves the precision of work piece car tooth.

Preferably, still include butt sleeve and a plurality of transition spacer bush, a plurality of transition spacer bushes are along the circumference direction evenly distributed of cylindricality spout on the cylindricality spout, the both ends of transition spacer bush are fixed respectively on cylindricality spout diapire and on the side of one side of transition spacer bush towards cylindricality spout diapire, the length direction of transition spacer bush is on a parallel with the axis direction of anchor clamps main part, and many transition spacer bushes are all worn to establish and are drawn the cover setting, draw the cover along being on a parallel with the length direction sliding connection of transition spacer bush on many transition spacer bushes, draw the cover to establish and follow the axis direction sliding connection who is on a parallel with the anchor clamps main part and sheathe in the butt, make the butt cover keep away from the one end terminal surface of drawing the cover and be the butt face, when the tight work piece of cover clamp, the one end terminal surface of work piece supports tightly on the butt face.

Through adopting above-mentioned technical scheme, through setting up the butt cover, when can making the work piece by the cover centre gripping that rises, still more the spacing of butt cover, the circumference outer wall homoenergetic that makes the one end terminal surface of work piece and work piece can be restricted, improves the stability of turning tooth anchor clamps centre gripping work piece.

Preferably, still include detection device and a plurality of precision spacer, a plurality of precision spacer along the circumference direction evenly distributed of cylindricality spout on the cylindricality spout, the precision spacer wears to establish and sliding connection is on pulling the cover, when the length direction perpendicular to cylindricality spout diapire of precision spacer and butt cover towards a side of cylindricality spout diapire, the both ends terminal surface of precision spacer supports tightly respectively on the cylindricality spout diapire and the butt cover towards a side of cylindricality spout diapire, detection device is used for detecting whether the clearance appears between the both ends of precision spacer and butt cover and the cylindricality spout diapire.

By adopting the technical scheme, the detection device is used for detecting the verticality of the precision spacer sleeve, and the verticality of the precision spacer sleeve is detected to detect the precision of the workpiece clamped by the expanding sleeve in the clamping state.

Preferably, the plurality of precision spacer bushes and the plurality of transition spacer bushes are arranged at intervals, and the spacing distance between every two adjacent precision spacer bushes is equal to that between every two adjacent transition spacer bushes.

Through adopting above-mentioned technical scheme, can improve and draw the stability of cover in the motion process, the precision spacer bush can be to drawing the cover everywhere and carrying out the precision detection simultaneously, improves the centre gripping precision of turning tooth anchor clamps.

Preferably, the detection device comprises an air supply device and an air pressure detection device, the precision spacer sleeve is provided with a first air path with two communicated ends, the clamp body is provided with a plurality of initial air paths corresponding to the first air paths respectively, the two ends of the initial air paths are communicated with the air supply device and the corresponding first air paths respectively, the air supply device is used for stably inflating the plurality of initial air paths, the pull sleeve is provided with a plurality of second air paths corresponding to the first air paths respectively, when the end faces of the two ends of the precision spacer sleeve are tightly pressed on the bottom wall of the cylindrical chute and the butt sleeve respectively, the two ends of the second air paths are communicated with the first air paths and the mounting hole respectively, the pull rod is in a suspension state in the mounting hole under the inflation action of the air supply device and is not attached to the inner wall of the mounting hole, when the position of the pull sleeve deviates, the pull rod can be attached to the inner wall of a certain position of the mounting hole, and the air pressure detection device is used for detecting air pressure change in the initial air path.

Through adopting above-mentioned technical scheme, when the skew appears in the position of drawing the cover, can exert an influence to the precision of work piece centre gripping, the clearance can appear between certain precision spacer bush and cylindricality spout diapire and the butt cover simultaneously, the air current that air feeder blown off can leak gas before these precision spacer bushes reachd the mounting hole again this moment, the blowing force that leads to each department of pull rod to receive is uneven, can lead to the pull rod no longer unsettled but can the butt on the certain inner wall of mounting hole, atmospheric pressure detection device can detect the atmospheric pressure change in the originated gas circuit, when detecting atmospheric pressure anomaly, just prove that the skew appears in the position of drawing the cover at present, need operating personnel to overhaul the car tooth anchor clamps.

Preferably, a plurality of third gas circuits have been seted up on the butt cover, and a plurality of third gas circuits correspond a plurality of first gas circuits respectively, the one end of third gas circuit extends to on the butt face and communicates with the external world, the other end of third gas circuit is close to first gas circuit setting, and when the both ends terminal surface of precision spacer sleeve supported tightly respectively on the cylindricality spout diapire and the butt was sheathe in, the other end and the first gas circuit intercommunication of third gas circuit, when the tight work piece of cover clamp that rises, the work piece butt is on the butt face and plugs up third gas circuit and external intercommunication department.

Through adopting above-mentioned technical scheme, when the skew appears in the position of work piece, one side of work piece does not laminate completely on the butt face, the air current can flow from certain third gas circuit this moment, the air current that leads to air feeder to blow off more than from second gas circuit one side, thereby make the air current intensity that the second gas circuit blew off weaken, the blowing force that leads to the pull rod to receive everywhere is uneven, make the pull rod no longer unsettled but can the butt on certain inner wall of mounting hole, when detecting atmospheric pressure when unusual, just prove that the skew appears in the position of pulling at present the cover, need operating personnel to overhaul the turning tooth anchor clamps. .

Preferably, the end that first gas circuit was kept away from to the third gas circuit and the end that the originated gas circuit was kept away from to first gas circuit all are equipped with sound generating mechanism, and the sound generating mechanism who is located first gas circuit is located one side that the originated gas circuit was kept away from to the second gas circuit, and when the air current flowed through sound generating mechanism, sound generating mechanism sent sound.

Through adopting above-mentioned technical scheme, when the normal centre gripping of car tooth anchor clamps, when the air current flowed in from originated gas circuit, can not always through the sound generating mechanism of first gas circuit and third gas circuit, so under normal clamping state, sound generating mechanism can not the sound production, the clamping position when the work piece takes place the skew, perhaps draw the position of cover to take place the skew, third gas circuit or first gas circuit gas leakage this moment, the air current can be always through the sound generating mechanism of third gas circuit or first gas circuit after flowing in from originated gas circuit, thereby make sound generating mechanism send out the sound, the operating personnel of being convenient for finds the source of problem fast, make operating personnel can in time maintain it.

Preferably, sound generating mechanism includes limit arris piece and two blocks that hide, shelter from the piece and fix on third gas circuit or first gas circuit, two block leave the slot between the piece and supply the air current to pass through, limit arris piece is fixed on third gas circuit or first gas circuit, limit arris piece is located to correspond and shelters from one side that the piece kept away from initial gas circuit and just sets up to the slot.

Through adopting above-mentioned technical scheme, when the centre gripping position of work piece takes place the skew, when one side of work piece did not laminate completely on the butt face promptly, the air current can flow in the third gas circuit this moment, because sound generating mechanism's setting, the air current can only pass through and blow to limit arris piece from the slot, and the air current can send the arris sound this moment to suggestion operating personnel work piece where does not support tight butt face, the operating personnel of being convenient for adjusts the work piece.

In summary, the present application includes at least one of the following beneficial technical effects:

the workpiece is clamped by the expansion sleeve, so that the clamping force applied to the workpiece in the circumferential direction is uniform, and the workpiece is not easy to separate from the expansion sleeve, so that the workpiece is more stable in the process of gear turning, and the precision of the gear turning of the workpiece is improved;

through setting up precision spacer bush and detection device, when detection device detected atmospheric pressure unusual, just prove that the skew appears in the position of drawing the cover at present, need operating personnel to overhaul the turning tooth anchor clamps.

Drawings

Fig. 1 is an overall structural diagram of the related art.

Fig. 2 is a schematic overall structure diagram of an embodiment of the present application.

Fig. 3 is a sectional view taken along line a-a of fig. 2.

Fig. 4 is an enlarged view at B in fig. 3.

Description of reference numerals: 1. a clamp body; 11. a cylindrical chute; 111. a second tapered surface; 12. pulling the sleeve; 121. a barrel; 1211. a sliding groove; 122. a bottom cover; 1221. a second gas path; 1222. mounting holes; 13. a transition spacer bush; 14. a precision spacer sleeve; 141. a first gas path; 142. receiving the gas circuit; 143. starting a gas circuit; 15. a pull rod; 151. a limiting ring; 152. a first bolt; 16. a butting sleeve; 161. a third gas path; 162. an abutting surface; 163. a movable through groove; 164. a dust cover; 165. a second bolt; 17. expanding sleeves; 171. a sliding block; 172. a first conical surface; 18. a sound producing device; 181. edge blocks; 182. a stop block is shielded; 183. narrow gaps; 2. a workpiece; 3. a base; 31. a clamping jaw; 32. a drive member.

Detailed Description

The present application is described in further detail below with reference to figures 2-4.

The embodiment of the application discloses a turning tooth clamp.

Referring to fig. 2 and 3, a turning tooth clamp of this embodiment includes clamp body 1, and clamp body 1 is cylindricly setting, has seted up cylindricality spout 11 on one of them side of clamp body 1, cylindricality spout 11 and the coaxial setting of clamp body 1, have along being on a parallel with the axis direction sliding connection of clamp body 1 on the cylindricality spout 11 and draw set 12, draw set 12 including end cover 122 and barrel 121, the circumference outer wall of end cover 122 is fixed on the circumference inner wall of barrel 121, end cover 122 and the coaxial setting of barrel 121, end cover 122 is located the one end of barrel 121, barrel 121 along being on a parallel with the axis direction sliding connection of clamp body 1 on cylindricality spout 11.

Referring to fig. 2 and 3, the coaxial mounting hole 1222 of both ends intercommunication of seting up on the end cover 122, can dismantle on the end cover 122 and be connected with pull rod 15, two spacing rings 151 of fixedly connected with are established to the cover on the circumference outer wall of pull rod 15, pull rod 15 wears to stretch the mounting hole 1222 setting, two stoppers are located the both sides and the butt of end cover 122 respectively on end cover 122, be connected with a plurality of first bolts 152 on one of them stopper, the one end of first bolt 152 is worn to stretch and is corresponded stopper and threaded connection on end cover 122, the circumference direction evenly distributed of stopper is followed to a plurality of first bolts 152. One end of the pull rod 15, facing the bottom wall of the cylindrical sliding groove 11, extends to extend out of the clamp body 1, the pull rod 15 can slide on the clamp body 1, and one end of the pull rod 15, extending out of the clamp body 1, is used for applying force by an external power source and reciprocates along the axial direction parallel to the pull rod 15.

Referring to fig. 2 and 3, an expansion sleeve 17 is detachably connected to the cylinder 121, and the expansion sleeve 17 is located on one side of the sleeve far away from the bottom sleeve 122. The side of the sleeve 17 facing the cylinder 121 is uniformly fixed with a plurality of sliding blocks 171 along the circumferential direction, the sliding blocks 171 are arranged in an L shape, one end of each sliding block 171 is vertically fixed on the side of the sleeve 17 facing the cylinder 121, the other end of each sliding block 171 faces the side away from the axis of the sleeve 17, a plurality of sliding grooves 1211 for slidably connecting the sliding blocks 171 are formed in the circumferential inner wall of the cylinder 121 along the circumferential direction, and an entering groove for the sliding blocks 171 to enter the sliding grooves 1211 from the outer side of the cylinder 121 is formed in each sliding groove 1211. When the expansion sleeve 17 is attached, the operator moves the expansion sleeve 17 to cause the sliding blocks 171 to enter the sliding grooves 1211 from the entrance grooves, then rotates the expansion sleeve 17 to cause the plurality of sliding blocks 171 to move to abut against the end walls of the sliding grooves, and then fixes the sliding blocks 171 to the cylinder 121 using the positioning bolts, one ends of which pass through the moving blocks and are screwed to the cylinder 121.

Referring to fig. 2 and 3, a first conical surface 172 is formed on the circumferential outer wall of the expansion sleeve 17, a second conical surface 111 matched with the first conical surface 172 is formed on the circumferential inner wall of the end of the cylindrical sliding chute 11 far away from the bottom wall of the cylindrical sliding chute 11, the end of the second conical surface 111 close to the bottom wall of the cylindrical sliding chute 11 is flared to the end far away from the bottom wall of the cylindrical sliding chute 11, and the first conical surface 172 of the expansion sleeve 17 is always attached to the second conical surface 111 of the cylindrical sliding chute 11 for sliding. The workpiece 2 is placed in the expansion sleeve 17, the expansion sleeve 17 surrounds the workpiece 2, the expansion sleeve 17 has certain deformability, one end, extending out of the clamp body 1, of the pull rod 15 is pulled towards the side far away from the cylindrical sliding groove 11, then the expansion sleeve 17 can gradually shrink towards one side of the workpiece 2 and clamp the workpiece 2, and at the moment, the circumferential outer wall of the workpiece 2 is tightly attached to the circumferential inner wall of the expansion sleeve 17.

Referring to fig. 2 and 3, a plurality of transition spacers 13 are vertically fixed on the bottom wall of the cylindrical sliding chute 11, the length direction of the transition spacers 13 is parallel to the axial direction of the fixture body 1, and the plurality of transition spacers 13 are uniformly distributed on the cylindrical sliding chute 11 along the circumferential direction of the cylindrical sliding chute 11. One end vertical fixation of transition spacer 13 is on the cylindricality spout 11 diapire, and the other end of transition spacer 13 is fixed with butt cover 16, and butt cover 16 sets up with anchor clamps main part 1 is coaxial. Transition spacer 13 wears to establish on end cover 122, and end cover 122 is along being on a plurality of transition spacer 13 of length direction sliding connection who is on a parallel with transition spacer 13, and butt cover 16 is located one side that end cover 122 kept away from cylindricality spout 11 diapire, and cylinder 121 encloses butt cover 16 including, and butt cover 16 is along being on a parallel with the axis direction sliding connection of butt cover 16 on cylinder 121.

Referring to fig. 2 and 3, the side surface of the abutment sleeve 16 away from the bottom sleeve 122 is an abutment surface 162, when the expansion sleeve 17 clamps the workpiece 2, the end surface of the workpiece 2 facing the abutment surface 162 abuts against the abutment surface 162, and the workpiece 2 can be more stably limited under the dual action of the expansion sleeve 17 and the abutment sleeve 16.

Referring to fig. 2 and 3, a movable through groove 163 is coaxially formed in the abutting sleeve 16 for the movement of the pull rod 15, a dust cover 164 is detachably connected to the abutting sleeve 16, a second bolt 165 is connected to the dust cover 164, the second bolt 165 penetrates through the dust cover 164 and is screwed to the abutting sleeve 16, and the dust cover 164 is located on one side of the abutting sleeve 16 far away from the bottom sleeve 122 and blocks the movable through groove 163.

Referring to fig. 2 and 3, the bottom sleeve 122 is provided with a plurality of precision spacers 14 in a penetrating manner and connected in a sliding manner along a direction parallel to the axis of the bottom sleeve 122, the length direction of the precision spacers 14 is parallel to the axis of the bottom sleeve 122, the plurality of precision spacers 14 are uniformly distributed on the bottom sleeve 122 along the circumferential direction of the bottom sleeve 122, the plurality of precision spacers 14 and the plurality of transition spacers 13 are arranged at intervals, and the interval distance between every two adjacent precision spacers 14 and the transition spacers 13 is equal. When the pull sleeve 12 is always coaxially arranged with the clamp body 1 in the moving process, the end surfaces of the two ends of the precision spacer sleeve 14 respectively abut against the bottom wall of the cylindrical sliding chute 11 and the side surface of one side of the abutting sleeve 16 facing the bottom wall of the cylindrical sliding chute 11; when the position of the pull sleeve 12 deviates, the pull sleeve 12 is not coaxially arranged with the clamp body 1, the precision spacer 14 is not perpendicular to the bottom wall of the cylindrical sliding groove 11 and the abutting sleeve 16, and a gap is formed between the precision spacer 14 and the bottom wall of the cylindrical sliding groove 11 or the abutting sleeve 16.

The gear turning clamp is further provided with a detection device, and the detection device is used for detecting the verticality of the precision spacer 14, namely, whether gaps exist between the two ends of the precision spacer 14 and the bottom walls of the abutting sleeves 16 and the cylindrical sliding grooves 11 or not is detected.

Referring to fig. 2 and 3, the detecting device includes an air supply device and an air pressure detecting device (not shown in the figure), a first air path 141 with two ends communicated is provided on the precision spacer 14, a plurality of initial air paths 143 are provided on the fixture body 1, the plurality of initial air paths 143 correspond to the plurality of first air paths 141 respectively, one end of the initial air path 143 is used for communicating with the air supply device, when the pull sleeve 12 and the fixture body 1 are coaxially arranged, the other end of the initial air path 143 is directly communicated with one end of the first air path 141 close to the cylindrical chute 11.

Referring to fig. 2 and 3, the pull sleeve 12 is provided with a plurality of second air paths 1221, the second air paths 1221 respectively correspond to the first air paths 141, one end of each second air path 1221 is communicated with the mounting hole 1222, and the other end of each second air path 1221 is close to the corresponding first air path 141. The precision spacer 14 is provided with a receiving air passage 142, one end of the receiving air passage 142 is communicated with the first air passage 141, and the other end of the receiving air passage 142 extends to be communicated with the outside. When the pull sleeve 12 and the clamp body 1 are coaxially arranged, one end of the second air passage 1221, which is far away from the mounting hole 1222, is communicated with the first air passage 141 through the receiving air passage 142.

Referring to fig. 2 and 3, a plurality of third air paths 161 are formed in the abutting sleeve 16, the plurality of third air paths 161 correspond to the plurality of first air paths 141 respectively, one end of each third air path 161 extends to the abutting surface 162 and is communicated with the outside, the other end of each third air path 161 is arranged close to the corresponding first air path 141, when the end surfaces of the two ends of the precision spacer sleeve 14 abut against the bottom wall of the cylindrical sliding groove 11 and the abutting sleeve 16 respectively, the other end of each third air path 161 is communicated with the corresponding first air path 141, and when the expansion sleeve 17 clamps the workpiece 2, the side surface of one side of the workpiece 2 abuts against the abutting surface 162 and blocks the communication position between the corresponding third air path 161 and the outside.

Referring to fig. 2 and 3, the air pressure detecting device is used to detect the air pressure change in the starting air path 143.

When the expansion sleeve 17 clamps the workpiece 2, and the pull sleeve 12 is maintained to be coaxial with the fixture body 1, the operator starts the air supply device to inflate the plurality of starting air paths 143, the air flow can flow through the first air path 141, the third air path 161, the receiving air path 142 and the second air path 1221 from the starting air paths 143, and finally blows towards the pull rod 15, the pull rod 15 is blown by the air flow of the plurality of second air paths 1221, the pull rod 15 is in a suspended state in the mounting hole 1222 and is not attached to the inner wall of the mounting hole 1222, and the air pressure value in the starting air path 143 detected by the air pressure detection device is a normal value at this time.

When the position of the pull sleeve 12 deviates, the clamping precision of the workpiece 2 is affected, meanwhile, gaps can occur between some precision spacer sleeves 14 and the bottom wall of the cylindrical sliding chute 11 and between some precision spacer sleeves 16, at this time, air flow blown out by the air supply device can leak before reaching the mounting hole 1222 through the precision spacer sleeves 14, so that the blowing force on each position of the pull rod 15 is unbalanced, the pull rod 15 can be abutted against the inner wall of a certain position of the mounting hole 1222 instead of being suspended, the air pressure change in the initial air passage 143 can be detected by the air pressure detection device, the clamp body 1 is provided with a controller, and when the air pressure detected by the air pressure detection device is out of a normal value range, the controller controls the clamping clamp to stop working automatically. The operator needs to overhaul the gear turning clamp, so that the original clamping precision of the gear turning clamp is restored.

When the position of the workpiece 2 deviates, the side surface of one side of the workpiece 2 is not completely attached to the abutting surface 162, at this time, the airflow may flow out from some third air paths 161, and the airflow blown out by the air supply device is not blown out from the second air path 1221 side, so that the intensity of the airflow blown out by the second air path 1221 is weakened, the blowing force applied to each position of the pull rod 15 is unbalanced, the pull rod 15 is not suspended but abuts against the inner wall of a certain position of the mounting hole 1222, the air pressure detection device may detect the air pressure change in the initial air path 143, and then the controller controls the clamping fixture to stop working automatically.

Referring to fig. 3 and 4, the sound generator 18 is installed at both the end of the third air path 161 away from the first air path 141 and the end of the first air path 141 away from the starting air path 143, the sound generator 18 on the first air path 141 is located at the side of the third air path 161 away from the starting air path 143, and when the airflow flows through the sound generator 18, the sound generator 18 makes a sound.

Referring to fig. 3 and 4, the sound generating device 18 includes an edge block 181 and two blocking blocks 182, the two blocking blocks 182 are fixed on the corresponding third air path 161 or the corresponding first air path 141, a narrow gap 183 is formed between the two blocking blocks 182, when the air supply device inflates air toward the starting air path 143, the air flow can only pass through the narrow gap 183 after flowing to the sound generating device 18, the edge block 181 is fixed on the corresponding third air path 161 or the corresponding first air path 141, and the edge block 181 is located on one side of the corresponding blocking block 182 far away from the starting air path 143 and is just opposite to the narrow gap 183.

When the clamping position of the workpiece 2 deviates, that is, when one side of the workpiece 2 is not completely attached to the abutting surface 162, the air flow flows in the third air path 161, due to the arrangement of the sound generating device 18, the air flow can only pass through the narrow slit 183 and blow to the edge block 181, and the air flow can generate edge sound at the moment, so that the operator is prompted as to where the workpiece 2 is not abutted against the abutting surface 162, and the operator can adjust the workpiece 2 conveniently.

When the verticality of the precision spacer 14 changes, the air flow flows to the sounding device 18 corresponding to the first air path 141, so that an operator can conveniently judge where the verticality of the precision spacer 14 deviates, and the operator can conveniently adjust the workpiece 2.

The implementation principle of a car tooth anchor clamps of this application embodiment does: an operator places the workpiece 2 in the expansion sleeve 17, then drives the pull rod 15 to move so that the expansion sleeve 17 clamps the workpiece 2, when the workpiece 2 is in the process of turning teeth, and the clamping precision of the turning tooth clamp does not meet the requirement, the turning tooth clamp can automatically stop working, meanwhile, air is continuously ventilated into the starting air channel 143, the place with precision deviation in the turning tooth clamp can make a sound, and the operator can conveniently adjust the workpiece 2.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a car tooth anchor clamps which characterized in that: comprises a clamp body (1), a cylindrical sliding groove (11) is coaxially arranged on one side surface of the clamp body (1), a pull sleeve (12) is connected to the cylindrical sliding groove (11) in a sliding manner along the axis of the cylindrical sliding groove (11), an expansion sleeve (17) used for clamping a workpiece (2) is detachably connected to the pull sleeve (12), the expansion sleeve (17) has deformability, a first conical surface (172) is arranged on the circumferential outer wall of the expansion sleeve (17), a second conical surface (111) matched with the first conical surface (172) is arranged on the circumferential inner wall of the cylindrical sliding groove (11), one end of the second conical surface (111) close to the bottom wall of the cylindrical sliding groove (11) is arranged in a flaring manner to the end far away from the bottom wall of the cylindrical sliding groove (11), and the first conical surface (172) of the expansion sleeve (17) is always attached to the second conical surface (111) of the cylindrical sliding groove (11) to slide, draw coaxial mounting hole (1222) of seting up both ends intercommunication on cover (12), pull rod (15) are worn to stretch mounting hole (1222) and are set up and can dismantle the connection on drawing cover (12), pull rod (15) are along the axis direction sliding connection who is on a parallel with anchor clamps main part (1) on anchor clamps main part (1), the one end orientation of pull rod (15) is kept away from and is stretched out anchor clamps main part (1) and supply external power source to carry out reciprocating drive on one side of cover (17) that rises, and when cover (17) that rises presss from both sides tight work piece (2), the circumference outer wall of work piece (2) is hugged closely the circumference inner wall of cover (17) that rises.

2. The tooth clamp of claim 1, wherein: the clamp is characterized by further comprising a butt joint sleeve (16) and a plurality of transition spacer bushes (13), wherein the transition spacer bushes (13) are uniformly distributed on the cylindrical sliding groove (11) along the circumferential direction of the cylindrical sliding groove (11), two ends of each transition spacer bush (13) are respectively fixed on the bottom wall of the cylindrical sliding groove (11) and one side face of each transition spacer bush (13) facing the bottom wall of the cylindrical sliding groove (11), the length direction of each transition spacer bush (13) is parallel to the axial direction of the clamp body (1), the transition spacer bushes (13) are arranged in a penetrating manner by a pull sleeve (12), the pull sleeve (12) is connected onto the transition spacer bushes (13) in a sliding manner along the length direction parallel to the transition spacer bushes (13), the pull sleeve (12) is sleeved and connected onto the butt joint sleeve (16) in a sliding manner along the axial direction parallel to the clamp body (1), and one end face, far away from the pull sleeve (12), of the butt joint sleeve (16), is a butt joint face (162), when the expansion sleeve (17) clamps the workpiece (2), one end face of the workpiece (2) abuts against the abutting face (162).

3. The tooth clamp of claim 2, wherein: the precision spacer bush structure is characterized by further comprising a detection device and a plurality of precision spacer bushes (14), wherein the precision spacer bushes (14) are evenly distributed on the cylindrical sliding groove (11) along the circumferential direction of the cylindrical sliding groove (11), the precision spacer bushes (14) are arranged in a penetrating mode and are connected to the pull bush (12) in a sliding mode, when the length direction of the precision spacer bushes (14) is perpendicular to the bottom wall of the cylindrical sliding groove (11) and the abutting bush (16) faces one side face of the bottom wall of the cylindrical sliding groove (11), end faces of two ends of the precision spacer bushes (14) are abutted to the bottom wall of the cylindrical sliding groove (11) and the abutting bush (16) faces one side face of the bottom wall of the cylindrical sliding groove (11), and the detection device is used for detecting whether gaps occur between two ends of the precision spacer bushes (14) and the abutting bush (16) and the bottom wall of the cylindrical sliding groove (11).

4. The tooth clamp according to claim 3, wherein: the multiple precision spacer bushes (14) and the multiple transition spacer bushes (13) are arranged at intervals, and the spacing distance between every two adjacent precision spacer bushes (14) and the transition spacer bushes (13) is equal.

5. The tooth clamp according to claim 3, wherein: the detection device comprises an air supply device and an air pressure detection device, a first air path (141) with two communicated ends is arranged on the precision spacer sleeve (14), a plurality of starting air paths (143) are arranged on the clamp body (1), the starting air paths (143) correspond to the first air paths (141) respectively, two ends of each starting air path (143) are communicated with the air supply device and the corresponding first air path (141) respectively, the air supply device is used for stably inflating the starting air paths (143), a plurality of second air paths (1221) are arranged on the pull sleeve (12), the second air paths (1221) correspond to the first air paths (141) respectively, when end faces at two ends of the precision spacer sleeve (14) are abutted against the bottom wall of the cylindrical sliding groove (11) and the abutting sleeve (16) respectively, two ends of each second air path (1221) are communicated with the first air path (141) and the mounting hole (1222) respectively, the pull rod (15) is in a suspended state in the mounting hole (1222) under the inflation action of the air supply device and is not attached to the inner wall of the mounting hole (1222), when the position of the pull sleeve (12) deviates, the pull rod (15) is attached to one inner wall of the mounting hole (1222), and the air pressure detection device is used for detecting the air pressure change in the starting air path (143).

6. The tooth clamp according to claim 5, wherein: the utility model discloses a precision spacer sleeve (14) and the butt joint cover (16) of the precision workpiece, including butt joint cover (16), butt joint cover (16) is last to have seted up a plurality of third gas circuits (161), and a plurality of third gas circuits (161) correspond a plurality of first gas circuits (141) respectively, the one end of third gas circuit (161) extends to on butt joint face (162) and communicates with the external world, the other end of third gas circuit (161) is close to first gas circuit (141) and sets up, and when the both ends terminal surface of precision spacer sleeve (14) supported tightly respectively on cylindricality spout (11) diapire and butt joint cover (16), the other end and the first gas circuit (141) intercommunication of third gas circuit (161), when the tight work piece (2) of cover (17) clamp work piece (2) that rises, work piece (2) butt is on butt joint face (162) and is stopped up third gas circuit (161) and external intercommunication department.

7. The tooth clamp of claim 6, wherein: one end that first gas circuit (141) was kept away from in third gas circuit (161) and the one end that initial gas circuit (143) was kept away from in first gas circuit (141) all are equipped with sound generating mechanism (18), and sound generating mechanism (18) that are located first gas circuit (141) are located one side that initial gas circuit (143) was kept away from in second gas circuit (1221), and when sound generating mechanism (18) were flowed through to the air current, sound generating mechanism (18) sounded.

8. The tooth clamp of claim 7, wherein: sound generating mechanism (18) are including limit arris piece (181) and two dog (182) of hiding, dog (182) are fixed on third gas circuit (161) or on first gas circuit (141), leave slot (183) confession air current between two dog (182) and pass through, limit arris piece (181) are fixed on third gas circuit (161) or on first gas circuit (141), limit arris piece (181) are located to correspond and hide one side that dog (182) kept away from initial gas circuit (143) and just to slot (183) setting.