Auxiliary clamping tool for machining arc tooth connecting chain ring

Abstract

The auxiliary clamping tool comprises a base, a lateral positioning seat arranged at the upper end of the base, a lateral stopping piece, a positioning vertical plate, an auxiliary vertical plate and a longitudinal stopping piece, a V-shaped positioning seat is arranged at the lower end of one side of the lateral positioning seat, and the lateral stopping piece is arranged on the outer side of the V-shaped positioning seat and moves towards the lateral positioning seat. The positioning vertical plate is vertically arranged at one end of the V-shaped positioning seat, the auxiliary vertical plate is vertically arranged at the other end of the V-shaped positioning seat, and the upper end of the auxiliary vertical plate is in threaded connection with the stop bolt; the arc tooth connecting chain ring clamped on the V-shaped positioning seat can abut against the positioning vertical plate through the stop bolt to be transversely positioned, and the longitudinal stop piece is transversely arranged on the side, facing the V-shaped positioning seat, of the lateral positioning seat and can penetrate into an opening of the arc tooth connecting chain ring to longitudinally position the arc tooth connecting chain ring. And errors of the clamping position and angle of the arc tooth connecting chain ring are reduced, and the machining precision is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of arc-tooth chain connectors processing, and particularly relates to an auxiliary clamping tooling for arc-tooth chain connectors processing. Background Art

[0002] The arc-tooth chain connector is an important accessory for connecting mining round-link chains, and particularly plays a key role in heavy machinery and equipment such as scraper conveyors and plough shearers. The arc-tooth chain connector mainly consists of two identical arc-shaped half-rings and a fixing pin. The arc-shaped half-rings are designed with two types of tooth systems, namely internal teeth and external teeth. The tooth profiles in each tooth system have concave and convex circular arcs, and each tooth direction also has a circular arc. This structure greatly increases the contact area between the two half-rings, thereby enhancing the service strength and quality stability of the chain connector.

[0003] In the prior art, when processing the tooth systems on the arc-shaped half-rings of the arc-tooth chain connectors, the processing accuracy has always been a difficult problem in the manufacture of chain connectors. Due to its irregular shape, multiple processes are required. Internal tooth fixtures and internal tooth cutters are used for internal tooth processing, and external tooth fixtures and external tooth cutters are used for external tooth processing. In this way, the arc-tooth chain connectors need to be repeatedly clamped by the internal tooth fixtures and external tooth fixtures. However, when the existing internal tooth fixtures and external tooth fixtures are repeatedly clamped, there will be certain differences in the clamping angles and positions, resulting in a reduction in the processing accuracy of the external teeth and internal teeth of the arc-tooth chain connectors, and it is very easy to cause insufficient meshing between the arc-shaped half-rings of the two arc-tooth chain connectors. Furthermore, during the use of the arc-tooth chain connectors, each tooth is prone to fracture due to uneven force. Summary of the Invention

[0004] In view of this, it is necessary to provide an auxiliary clamping tooling for arc-tooth chain connectors processing to solve the technical problems in the prior art, such as large errors in clamping angles and positions, resulting in low processing accuracy of the external teeth and internal teeth of the arc-tooth chain connectors.

[0005] The technical solution adopted by the present invention to solve its technical problems is: An auxiliary clamping tool for the processing of arc-tooth connecting chain rings, comprising a base, a lateral positioning seat, a lateral stop, a positioning vertical plate, a secondary vertical plate and a longitudinal stop arranged at the upper end of the base. At the lower end of one side of the lateral positioning seat, there is a V-shaped positioning seat for clamping the arc-tooth connecting chain ring. The lateral stop is arranged outside the V-shaped positioning seat and is directly opposite to the lateral positioning seat. The lateral stop can move towards the lateral positioning seat, forming a clamping force therebetween to clamp and fix both sides of the arc-tooth connecting chain ring clamped on the V-shaped positioning seat. The positioning vertical plate is erected at one end of the V-shaped positioning seat and extends upward along the end of the V-shaped positioning seat. The secondary vertical plate is erected at the other end of the V-shaped positioning seat and is directly opposite to the positioning vertical plate. At the upper end of the secondary vertical plate, there is a stop bolt threadedly connected. The axial direction of the stop bolt is directly opposite to the positioning vertical plate and can rotate and move towards the positioning vertical plate to push the arc-tooth connecting chain ring clamped on the V-shaped positioning seat towards the positioning vertical plate, forming a clamping force therebetween. The longitudinal stop is horizontally arranged on the side of the lateral positioning seat facing the V-shaped positioning seat and extends towards the V-shaped positioning seat. It can penetrate into the opening of the arc-tooth connecting chain ring clamped on the V-shaped positioning seat and can move downward to press the arc-tooth connecting chain ring on the V-shaped positioning seat.

[0006] Preferably, at one end of the lateral positioning seat facing the positioning vertical plate, there is a positioning side plate extending upward vertically. The positioning side plate is located inside the positioning vertical plate and is flush with the side vertical surface of the lateral positioning seat contacting the arc-tooth connecting chain ring and is close to the positioning vertical plate.

[0007] Preferably, at one end of the lateral positioning seat facing the secondary vertical plate, there is a secondary side plate extending upward vertically. The secondary side plate is located inside the secondary vertical plate and is flush with the side vertical surface of the lateral positioning seat contacting the arc-tooth connecting chain ring.

[0008] Preferably, on the upper end surface of the end of the lateral positioning seat provided with the secondary side plate, there is an adjustment groove opened parallel to the direction of the positioning side plate. At the lower end of the secondary side plate, there is a clamping seat matching the adjustment groove. The clamping seat is clamped in the adjustment groove and moves along the adjustment groove towards the positioning side plate to adjust the distance between the secondary side plate and the positioning side plate. At the upper end of the clamping seat, there is a locking bolt. The locking bolt penetrates through the clamping seat and can abut against the adjustment groove to lock the secondary side plate.

[0009] Preferably, the lateral stop member includes a first stop arm, a second stop arm, and two lateral clamping hydraulic cylinders. The first stop arm and the second stop arm are respectively vertically arranged on the outer sides of the V-shaped positioning seat. The upper end of the first stop arm faces the positioning side plate, and the upper end of the second stop arm faces the auxiliary side plate. The two lateral clamping hydraulic cylinders are respectively horizontally arranged on the base. The telescopic shafts of the two lateral clamping hydraulic cylinders respectively face the direction of the lateral stop member and are respectively connected to the lower ends of the first stop arm and the second stop arm. The two lateral clamping hydraulic cylinders simultaneously drive the first stop arm and the second stop arm to move towards the lateral positioning seat, so as to form a mutual clamping force between the first stop arm and the positioning side plate and between the second stop arm and the auxiliary side plate, and respectively clamp and fix both sides of the arc tooth connecting link clamped on the V-shaped positioning seat.

[0010] Preferably, the lower ends of the first stop arm and the second stop arm and the telescopic shafts of the lateral clamping hydraulic cylinders are all rotatably connected, and the first stop arm and the second stop arm can respectively rotate around the telescopic shafts of the lateral clamping hydraulic cylinders.

[0011] Preferably, the longitudinal stop member includes a pressing seat, a lifting hydraulic cylinder, and a pressing column. A card slot is longitudinally opened on one side of the lateral positioning seat facing the V-shaped positioning seat. The card slot is opposite to the middle of the V-shaped positioning seat. The pressing seat is clamped in the card slot and can slide up and down along the card slot. The lifting hydraulic cylinder is longitudinally arranged at the lower end of the lateral positioning seat. The telescopic arm of the lifting hydraulic cylinder penetrates the lateral positioning seat and extends into the card slot to be connected to the pressing seat. The pressing column is horizontally arranged on the pressing seat and can horizontally extend into the opening of the arc tooth connecting link clamped on the V-shaped positioning seat along the pressing seat. The lifting hydraulic cylinder drives the pressing seat to move up and down along the card slot. When moving downwards, it can press the arc tooth connecting link clamped on the V-shaped positioning seat onto the V-shaped positioning seat through the pressing column.

[0012] Preferably, a plurality of jacks are horizontally spaced along the direction of the adjustment slot on one side of the pressing seat facing the V-shaped positioning seat, and one end of the pressing column can be inserted into any one of the jacks.

[0013] Preferably, the V-shaped positioning seat is composed of two triangular pads. The two triangular pads are arranged oppositely to form a V-shaped groove, and the distance between the two triangular pads is adjustable.

[0014] Preferably, on the other side of the lateral positioning seat, V-shaped positioning seats, lateral stoppers, positioning vertical plates, auxiliary vertical plates, and positioning side plates are symmetrically arranged as well, which can simultaneously fix two arc tooth chain links of the same specification. The card slot runs through both sides of the lateral positioning seat, and the jack runs through both sides of the pressing seat. There are two pressing columns, which are respectively inserted into the jacks on both sides of the pressing seat relatively to simultaneously press down the arc tooth chain links fixed on both sides of the lateral positioning seat. The auxiliary side plate is erected on the upper end of the lateral positioning seat, and both ends of the auxiliary side plate are flush with the side vertical surfaces on both sides of the lateral positioning seat where the V-shaped positioning seats are arranged.

[0015] As can be seen from the above technical solution, the auxiliary clamping tooling for processing the arc tooth chain link provided by this application includes a base, a lateral positioning seat, a lateral stopper, a positioning vertical plate, an auxiliary vertical plate, and a longitudinal stopper arranged on the upper end of the base. At the lower end of one side of the lateral positioning seat, a V-shaped positioning seat for clamping the arc tooth chain link is provided. The lateral stopper is arranged outside the V-shaped positioning seat and is directly opposite to the lateral positioning seat. The lateral stopper can move towards the lateral positioning seat to laterally position the arc tooth chain link clamped on the V-shaped positioning seat. The positioning vertical plate is erected at one end of the V-shaped positioning seat and extends upward along the end of the V-shaped positioning seat. The auxiliary vertical plate is erected at the other end of the V-shaped positioning seat and is directly opposite to the positioning vertical plate. A stop bolt is threadedly connected to the upper end of the auxiliary vertical plate. By the stop bolt, the arc tooth chain link clamped on the V-shaped positioning seat can be pushed towards the positioning vertical plate to laterally position the arc tooth chain link. The longitudinal stopper is horizontally arranged on the side of the lateral positioning seat facing the V-shaped positioning seat and extends towards the V-shaped positioning seat. It can penetrate into the opening of the arc tooth chain link clamped on the V-shaped positioning seat and can move downward to press the arc tooth chain link on the V-shaped positioning seat to longitudinally position the arc tooth chain link. In this way, the arc tooth chain link can be stably fixed on the base, improving the stability of the arc tooth chain link during the processing. Moreover, the positions of the lateral positioning seat and the positioning vertical plate are fixedly set. Each time of clamping, the arc tooth chain link is fixed closely against the lateral positioning seat and the positioning vertical plate, thereby reducing the errors in position and angle during the secondary clamping of the arc tooth chain link, and further improving the processing accuracy of the external teeth and internal teeth of the arc tooth chain link. Also, this auxiliary clamping tooling does not require repeated clamping of the same arc tooth chain link. After one-time clamping is completed, the processing procedures for each mating surface can be completed through a machining center, effectively ensuring the product accuracy, improving the product quality, and accelerating the product manufacturing efficiency. Brief Description of the Drawings

[0016] Figure 1 It is a schematic side view structure diagram of the invention.

[0017] Figure 2 It is a schematic three-dimensional structure diagram of the invention.

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of another angle of the invention.

[0019] Figure 4 It is a schematic diagram of the structure of the lateral stop member of the invention.

[0020] Figure 5 It is a schematic diagram of the structure for clamping the arc-tooth connecting link of the invention.

[0021] Figure 6 It is a schematic diagram of the structure of another angle for clamping the arc-tooth connecting link of the invention.

[0022] Figure 7 、 Figure 8 It is a schematic diagram of the three-dimensional structure in another preferred embodiment of the invention.

[0023] Figure 9 It is a schematic diagram of the top view structure in another preferred embodiment of the invention.

[0024] Figure 10 It is a schematic diagram of the structure for clamping two arc-tooth connecting links simultaneously in another preferred embodiment of the invention.

[0025] In the figure: base 10, lateral positioning seat 20, positioning side plate 21, secondary side plate 22, adjustment slot 23, clamping seat 24, locking bolt 25, card slot 26, lateral stop member 30, first stop arm 31, second stop arm 32, lateral clamping hydraulic cylinder 33, positioning vertical plate 40, secondary vertical plate 50, stop bolt 51, pressure plate 52, longitudinal stop member 60, pressure seat 61, lifting hydraulic cylinder 62, pressure column 63, jack 64, V-shaped positioning seat 70, adjustment bolt 71. Specific embodiments

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings.

[0027] Please refer to Figures 1 to 3, an embodiment of the present invention provides an auxiliary clamping tooling for the processing of arc-tooth connecting links, including a base 10, a lateral positioning seat 20, a lateral stop 30, a positioning vertical plate 40, a secondary vertical plate 50 and a longitudinal stop 60 arranged at the upper end of the base 10. The base 10 is fixed on the workbench of a full-automatic CNC vertical machining center. The lateral positioning seat 20 is fixedly arranged in the middle of the upper end face of the base 10. At the lower end on one side of the lateral positioning seat 20, there is a V-shaped positioning seat 70 for clamping the arc-tooth connecting link. The V-shaped positioning seat 70 is composed of two triangular pads, which are arranged oppositely and fixed on the upper end face of the base 10, and combined to form an upward-opening V-shaped groove. The lateral stop 30 is arranged outside the V-shaped positioning seat 70, and the lateral stop 30 is directly opposite to the lateral positioning seat 20. The lateral stop 30 can move towards the lateral positioning seat 20, and a clamping force is formed between them to clamp and fix both sides of the arc-tooth connecting link clamped on the V-shaped positioning seat 70. The positioning vertical plate 40 is erected at one end of the V-shaped positioning seat 70 and extends upward along the end of the V-shaped positioning seat 70. The positioning vertical plate 40 is perpendicular to the base 10. The secondary vertical plate 50 is erected at the other end of the V-shaped positioning seat 70 and is directly opposite to the positioning vertical plate 40. At the upper end of the secondary vertical plate 50, there is a stop bolt 51 threadedly connected. The stop bolt 51 passes through the secondary vertical plate 50, its axis is directly opposite to the positioning vertical plate 40, and a pressure plate 52 is arranged at the end of the stop bolt 51 facing the positioning vertical plate 40. By manually rotating the stop bolt 51 to move towards the positioning vertical plate 40, the arc-tooth connecting link clamped on the V-shaped positioning seat 70 can be pushed towards the positioning vertical plate 40 by the pressure plate 52, and a clamping force is formed between the pressure plate 52 and the positioning vertical plate 40. The longitudinal stop 60 is horizontally arranged on the side of the lateral positioning seat 20 facing the V-shaped positioning seat 70 and extends towards the V-shaped positioning seat 70. The longitudinal stop 60 can penetrate into the opening of the arc-tooth connecting link clamped on the V-shaped positioning seat 70 and can move vertically downward along the lateral positioning seat 20 to press the arc-tooth connecting link on the V-shaped positioning seat 70.

[0028] Please continue to refer to Figure 2 and Figure 3, in order to improve the applicability to the processing of arc tooth connecting links of different specifications, a positioning side plate 21 extending upward is vertically arranged at one end of the lateral positioning seat 20 facing the positioning vertical plate 40. The positioning side plate 21 is located inside the positioning vertical plate 40, and is flush with the side vertical surface of the arc tooth connecting link contacted by the lateral positioning seat 20, and is close to the positioning vertical plate 40; a secondary side plate 22 extending upward is vertically arranged at one end of the lateral positioning seat 20 facing the secondary vertical plate 50. The secondary side plate 22 is located inside the secondary vertical plate 50, and is flush with the side vertical surface of the arc tooth connecting link contacted by the lateral positioning seat 20. The height of the positioning vertical plate 40 is lower than the height of the connecting arm of the arc tooth connecting link where the internal teeth are opened to be processed. The positioning side plate 21 is of the same height as the positioning vertical plate 40 and is integrally arranged with the positioning vertical plate 40. The positioning side plate 21 and the positioning vertical plate 40 form an L-shaped stop at the end of the lateral positioning seat 20. The positioning side plate 21 is used for laterally stopping the upper end of the connecting arm of the arc tooth connecting link where the internal teeth are opened to prevent it from tilting towards the lateral positioning seat 20. The height of the secondary side plate 22 is lower than the height of the connecting arm of the arc tooth connecting link where the external teeth are opened to be processed. The secondary side plate 22 is used for laterally stopping the upper end of the connecting arm of the arc tooth connecting link where the external teeth are opened to prevent it from tilting towards the lateral positioning seat 20.

[0029] Please refer to Figure 5 and Figure 6When clamping and fixing the arc-toothed chain ring to be processed, the open end of the arc-toothed chain ring is upward, the connecting arm of the arc-toothed chain ring that needs to be provided with inner teeth is directed toward the positioning vertical plate 40, and the connecting arm of the arc-toothed chain ring that needs to be provided with outer teeth is directed toward the auxiliary vertical plate 50, and the arc-toothed chain ring is inserted into the V-shaped groove of the V-shaped positioning seat 70, so that it is placed close to the lateral positioning seat 20, and the connecting arm of the arc-toothed chain ring that needs to be provided with inner teeth is placed on the positioning side plate 21, and the connecting arm of the arc-toothed chain ring that needs to be provided with outer teeth is placed on the auxiliary side plate 22, and the longitudinal stopper 60 is inserted into the opening of the arc-toothed chain ring; the V-shaped groove is used to limit the lower end of the arc-toothed chain ring; the lateral stopper 30 is positioned laterally The seat 20 moves closer, and the arc-toothed chain ring is squeezed against the side wall of the lateral positioning seat 20 by the lateral stopper 30, and the lateral movement of the arc-toothed chain ring is limited by the lateral stopper 30, and the longitudinal stopper 60 is moved downward, and the arc-toothed chain ring is pressed into the V-shaped groove by the longitudinal stopper 60, and the longitudinal stopper 60 is used to limit the longitudinal movement of the arc-toothed chain ring, and the stop bolt 51 is rotated to move toward the positioning vertical plate 40, and the pressure plate 52 at the end of the stop bolt 51 is pressed against the outer side of the connecting arm with external teeth of the arc-toothed chain ring, and the arc-toothed chain ring is pressed toward the positioning vertical plate 40, so that the connecting arm with internal teeth of the arc-toothed chain ring is close to the positioning vertical plate 40 to limit the lateral movement of the arc-toothed chain ring. In this way, through the mutual cooperation of the lateral positioning seat 20, the lateral stopper 30, the positioning vertical plate 40, the auxiliary vertical plate 50 and the longitudinal stopper 60, the arc-toothed chain ring to be processed can be restricted in the six directions of up, down, left, right, front and back, and it can be stably fixed on the base 10, thereby improving the stability of the arc-toothed chain ring during the processing. In addition, the positions of the lateral positioning seat 20 and the positioning vertical plate 40 are fixed. Each time the arc-toothed chain ring is clamped, it is fixed close to the lateral positioning seat 20 and the positioning vertical plate 40, so as to reduce the position and angle errors of the arc-toothed chain ring during the secondary clamping, thereby improving the processing accuracy of the outer teeth and inner teeth of the arc-toothed chain ring.

[0030] Please see Figures 2 to 4, Specifically, the lateral stopper 30 includes a first stopper arm 31, a second stopper arm 32, and two lateral clamping hydraulic cylinders 33. The first stopper arm 31 and the second stopper arm 32 are respectively vertically arranged outside the V-shaped positioning seat 70. The upper end of the first stopper arm 31 is flush with and directly opposite to the positioning side plate 21. The upper end of the second stopper arm 32 is flush with and directly opposite to the auxiliary side plate 22. The two lateral clamping hydraulic cylinders 33 are respectively horizontally arranged on the base 10. The telescopic shafts of the two lateral clamping hydraulic cylinders 33 respectively face the direction of the lateral stopper 30 and are respectively connected to the lower ends of the first stopper arm 31 and the second stopper arm 32. When clamping and fixing the arc-tooth connecting link to be processed, the two lateral clamping hydraulic cylinders 33 simultaneously drive the first stopper arm 31 and the second stopper arm 32 to move towards the lateral positioning seat 20. The connecting arm of the arc-tooth connecting link with internal teeth is squeezed by the first stopper arm 31 towards the positioning side plate 21, forming a mutual clamping force with the positioning side plate 21 to clamp and fix the connecting arm of the arc-tooth connecting link with internal teeth. The connecting arm of the arc-tooth connecting link with external teeth is squeezed by the second stopper arm 32 towards the auxiliary side plate 22, forming a mutual clamping force with the auxiliary side plate 22 to clamp and fix the connecting arm of the arc-tooth connecting link with external teeth. The arc-tooth connecting link is laterally fixed by the first stopper arm 31 and the second stopper arm 32, restricting the lateral movement of the arc-tooth connecting link.

[0031] Please continue to refer to Figure 1 and Figure 2 , the longitudinal stopper 60 includes a pressing seat 61, a lifting hydraulic cylinder 62, and a pressing column 63. A card slot 26 is longitudinally opened on one side of the lateral positioning seat 20 facing the V-shaped positioning seat 70. The card slot 26 is opened in the middle and is directly opposite to the middle of the V-shaped positioning seat 70. The pressing seat 61 is clamped in the card slot 26 and can slide up and down along the card slot 26. The lifting hydraulic cylinder 62 is longitudinally arranged at the lower end of the lateral positioning seat 20. The telescopic arm of the lifting hydraulic cylinder 62 penetrates the lateral positioning seat 20 and extends into the card slot 26, and is fixedly connected to the pressing seat 61. An insertion hole 64 is opened on one side of the pressing seat 61 facing the V-shaped positioning seat 70. The insertion hole 64 is opened parallel to the direction of the lateral stopper 30. One end of the pressing column 63 is detachably inserted into the insertion hole 64, and the other end of the pressing column 63 horizontally extends into the opening of the arc-tooth connecting link inserted on the V-shaped positioning seat 70. The lifting hydraulic cylinder 62 drives the pressing seat 61 to move up and down in the opening of the arc-tooth connecting link along the card slot 26. When moving downward, the arc-tooth connecting link inserted on the V-shaped positioning seat 70 can be pressed down on the V-shaped positioning seat 70 through the pressing column 63 to longitudinally fix the arc-tooth connecting link.

[0032] The lower ends of the first stop arm 31 and the second stop arm 32 and the telescopic shaft of the lateral clamping hydraulic cylinder 33 are all rotatably sleeved and connected. The first stop arm 31 and the second stop arm 32 can respectively rotate around the telescopic shaft of the lateral clamping hydraulic cylinder 33 towards the two ends of the V-shaped positioning seat 70. When clamping the arc tooth connecting link, the first stop arm 31 and the second stop arm 32 can be rotated towards the two ends of the V-shaped positioning seat 70, so that the side of the V-shaped positioning seat 70 facing the first stop arm 31 and the second stop arm 32 is completely open, facilitating the insertion of the arc tooth connecting link on the V-shaped positioning seat 70.

[0033] Please refer to Figure 2 or Figure 6 , further, in order to facilitate the clamping of arc tooth connecting links of different specifications by the auxiliary clamping tooling, an adjustment groove 23 is provided on the upper end surface of one end of the auxiliary side plate 22 provided on the lateral positioning seat 20. The adjustment groove 23 is provided parallel to the positioning side plate 21. A clamping seat 24 matching the adjustment groove 23 is provided at the lower end of the auxiliary side plate 22. The clamping seat 24 is clamped in the adjustment groove 23 and moves along the adjustment groove 23 towards the positioning side plate 21 to adjust the distance between the auxiliary side plate 22 and the positioning side plate 21. A locking bolt 25 is provided at the upper end of the clamping seat 24. The locking bolt 25 passes through the clamping seat 24 and can abut against the adjustment groove 23 to lock the auxiliary side plate 22. A plurality of jacks 64 are provided at intervals along the opening direction of the adjustment groove 23 on the side of the pressing seat 61 facing the V-shaped positioning seat 70. One end of the pressing column 63 can be inserted into any one of the jacks 64. When clamping and fixing arc tooth connecting links of different specifications, the position of the auxiliary side plate 22 can be adjusted according to the distance between the two connecting arms of the arc tooth connecting link provided with external teeth and internal teeth, so that the distance between the auxiliary side plate 22 and the positioning side plate 21 matches the distance between the two connecting arms of the arc tooth connecting link to be processed. The second stop arm 32 can rotate adaptively according to the position of the auxiliary side plate 22. Similarly, the pressing column 63 can also select an appropriate jack 64 to insert according to the opening position of the arc tooth connecting link to be processed.

[0034] Please refer to Figure 3 , the two triangular pads of the V-shaped positioning seat 70 are arranged oppositely. One of the triangular pads is fixedly arranged on the base 10 close to the positioning vertical plate 40, and the other triangular pad is installed on the base 10 through an adjustment bolt 71, and the position of the triangular pad moving towards the positioning vertical plate 40 can be manually adjusted according to the specification of the arc tooth connecting link to be processed, so as to adjust the distance between the two triangular pads.

[0035] Please refer to Figures 7 to 10, in a preferred embodiment, V-shaped positioning seats 70, lateral stoppers 30, positioning vertical plates 40, auxiliary vertical plates 50, and positioning side plates 21 are symmetrically arranged on the other side of the above-mentioned lateral positioning seat 20. The auxiliary side plate 22 is erected at the upper end of the lateral positioning seat 20, and both ends of the auxiliary side plate 22 are flush with the side vertical surfaces on both sides of the lateral positioning seat 20 where the V-shaped positioning seats 70 are arranged. The clamping grooves 26 are opened through both sides of the lateral positioning seat 20 where the V-shaped positioning seats 70 are arranged, and the jacks 64 are opened through both sides of the pressing seat 61. There are two pressing columns 63, which are respectively inserted into the jacks 64 on both sides of the pressing seat 61 relatively. In this way, when clamping and fixing the arc tooth connecting link to be processed, two arc tooth connecting links of the same specification can be simultaneously clamped on both sides of the lateral positioning seat 20 for parallel fixing to improve the processing efficiency.

[0036] The above-disclosed are only the preferred embodiments of the present invention. Of course, the scope of the rights of the present invention cannot be limited thereby. Those of ordinary skill in the art can understand all or part of the processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. An auxiliary clamping tool for processing arc toothed chain rings, characterized in that: The invention comprises a base, a lateral positioning seat arranged at the upper end of the base, a lateral stopper, a positioning vertical plate, a secondary vertical plate and a longitudinal stopper, wherein a V-shaped positioning seat for clamping an arc toothed chain ring is arranged at the lower end of one side of the lateral positioning seat, the lateral stopper is arranged at the outer side of the V-shaped positioning seat and is directly opposite to the lateral positioning seat, and the lateral stopper can move toward the lateral positioning seat to form a clamping force between each other to clamp and fix the two sides of the arc toothed chain ring clamped on the V-shaped positioning seat, the positioning vertical plate is vertically arranged at one end of the V-shaped positioning seat, and is extended upward along the end of the V-shaped positioning seat, and the secondary vertical plate is vertically arranged The vertical part is arranged at the other end of the V-shaped positioning seat, facing the positioning vertical plate, and a stop bolt is threadedly connected to the upper end of the secondary vertical plate. The axial direction of the stop bolt faces the positioning vertical plate and can be rotated and moved in the direction of the positioning vertical plate to push the arc tooth chain ring clamped on the V-shaped positioning seat against the positioning vertical plate, forming a clamping force between the positioning vertical plate and the positioning vertical plate. The longitudinal stop member is transversely arranged on the side of the lateral positioning seat facing the V-shaped positioning seat and extends in the direction of the V-shaped positioning seat, can be inserted into the opening of the arc tooth chain ring clamped on the V-shaped positioning seat, and can move downward to press the arc tooth chain ring on the V-shaped positioning seat.

2. The auxiliary clamping tool for processing arc toothed chain rings according to claim 1, characterized in that: A positioning side plate extending upward is vertically arranged at one end of the lateral positioning seat facing the positioning vertical plate. The positioning side plate is located on the inner side of the positioning vertical plate and is flush with the side surface of the lateral positioning seat contacting the arc tooth chain ring and close to the positioning vertical plate.

3. The auxiliary clamping tool for processing arc toothed chain rings according to claim 2, characterized in that: An upwardly extending auxiliary side plate is vertically arranged at one end of the lateral positioning seat facing the auxiliary vertical plate. The auxiliary side plate is located on the inner side of the auxiliary vertical plate and is flush with the side surface of the lateral positioning seat contacting the arc tooth connecting chain ring.

4. The auxiliary clamping tool for processing arc toothed chain rings according to claim 3, characterized in that: The lateral positioning seat is provided with an adjustment groove on the upper end surface of one end of the secondary side plate, and the adjustment groove is opened parallel to the positioning side plate. The lower end of the secondary side plate is provided with a socket matching the adjustment groove. The socket is clamped in the adjustment groove and moves along the adjustment groove toward the positioning side plate to adjust the distance between the secondary side plate and the positioning side plate. A locking bolt is provided at the upper end of the socket, and the locking bolt passes through the socket and can abut against the adjustment groove to lock the secondary side plate.

5. The auxiliary clamping tool for processing arc toothed chain rings according to claim 4, characterized in that: The lateral stop member includes a first stop arm, a second stop arm and two lateral clamping hydraulic cylinders. The first stop arm and the second stop arm are respectively vertically arranged on the outer sides of the V-shaped positioning seat, the upper end of the first stop arm is opposite to the positioning side plate, and the upper end of the second stop arm is opposite to the auxiliary side plate. The two lateral clamping hydraulic cylinders are respectively transversely arranged on the base, and the telescopic axes of the two lateral clamping hydraulic cylinders are respectively directed toward the lateral stop member and are respectively connected to the lower ends of the first stop arm and the second stop arm. The two lateral clamping hydraulic cylinders simultaneously drive the first stop arm and the second stop arm to move toward the lateral positioning seat, so that mutual clamping force is formed between the first stop arm and the positioning side plate, and between the second stop arm and the auxiliary side plate, so as to clamp and fix the two sides of the arc tooth chain ring clamped on the V-shaped positioning seat.

6. The auxiliary clamping tool for processing arc toothed chain rings according to claim 5, characterized in that: The lower ends of the first stop arm and the second stop arm are rotatably connected to the telescopic shaft of the lateral clamping hydraulic cylinder, and the first stop arm and the second stop arm can rotate around the telescopic shaft of the lateral clamping hydraulic cylinder respectively.

7. The auxiliary clamping tool for processing arc toothed chain rings according to claim 6, characterized in that: The longitudinal stop member includes a pressure seat, a lifting hydraulic cylinder and a pressure column. The lateral positioning seat is longitudinally provided with a slot on one side facing the V-shaped positioning seat, and the slot is opposite to the middle of the V-shaped positioning seat. The pressure seat is clamped in the slot and can slide up and down along the slot. The lifting hydraulic cylinder is longitudinally arranged at the lower end of the lateral positioning seat, and the telescopic arm of the lifting hydraulic cylinder penetrates the lateral positioning seat and extends into the slot to be connected to the pressure seat. The pressure column is transversely arranged on the pressure seat and can extend transversely along the pressure seat into the opening of the arc tooth chain ring clamped on the V-shaped positioning seat. The lifting hydraulic cylinder drives the pressure seat to move up and down along the slot. When moving downward, the arc tooth chain ring clamped on the V-shaped positioning seat can be pressed down on the V-shaped positioning seat through the pressure column.

8. The auxiliary clamping tool for processing arc toothed chain rings according to claim 7, characterized in that: A plurality of insertion holes are arranged at intervals in the horizontal direction along the opening direction of the adjustment groove on one side of the pressure seat facing the V-shaped positioning seat, and one end of the pressure column can be inserted into any one of the insertion holes.

9. The auxiliary clamping tool for processing arc toothed chain rings according to claim 8, characterized in that: The V-shaped positioning seat is composed of two triangular pads, which are arranged opposite to each other and combined to form a V-shaped groove. The distance between the two triangular pads is adjustable.

10. The auxiliary clamping tool for processing arc toothed chain rings according to claim 9, characterized in that: The other side of the lateral positioning seat is also symmetrically provided with a V-shaped positioning seat, a lateral stopper, a positioning vertical plate, a secondary vertical plate, and a positioning side plate, which can simultaneously fix two arc-toothed chain rings of the same specification; the slot is opened through both sides of the lateral positioning seat, and the insertion hole is opened through both sides of the pressure seat; there are two pressure columns, which are respectively inserted into the insertion holes on both sides of the pressure seat to simultaneously press down the arc-toothed chain rings fixed on both sides of the lateral positioning seat; the secondary side plate is vertically arranged at the upper end of the lateral positioning seat, and the two ends of the secondary side plate are respectively flush with the side facades on both sides of the V-shaped positioning seat of the lateral positioning seat.

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