Oval wheel grinding jig

Abstract

The application relates to the field of machine tool accessories, and discloses a cycloid wheel hole grinding clamp with higher clamping precision. The cycloid wheel hole grinding clamp is provided with at least six clamping bodies with clamping claws, can effectively clamp and position two pieces of cycloid wheels used in pairs, and can control the opening and closing of all the clamping bodies through the driving mechanism to simultaneously release or clamp the two pieces of cycloid wheels. On one hand, the clamping parts of the clamping claws move synchronously towards the cycloid wheels for clamping, and in the case that the diameters of the cycloid wheels have errors, the two pieces of cycloid wheels can be automatically centered and kept coaxial, so that the clamping precision is guaranteed. On the other hand, the clamping claws corresponding to the two pieces of cycloid wheels are uniformly distributed and synchronously clamped, so that the uniformity of the clamping force applied to the cycloid wheels is guaranteed. On the other hand, the clamping operation of the clamping mechanism can be controlled by regulating the pressure in the lower cavity, the automation degree of the clamp is improved, and the clamping efficiency and precision can be further improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of machine tool accessories, and particularly relates to a cycloid gear hole grinding clamp. BACKGROUND

[0002] Cycloid gear is an important part of a cycloidal pin gear decelerator, such as an RV decelerator. In this type of decelerator, cycloid gears are usually used in pairs, respectively cycloid gear A and cycloid gear B, and the two pieces of cycloid gears are assembled and matched by three crank shafts through needle bearings, and the two pieces of cycloid gears are respectively installed on two eccentric shaft sections of the crank shaft; when the decelerator operates, the three crank shafts rotate simultaneously to drive the two pieces of cycloid gears to swing; in order to ensure the smooth operation of the cycloid gears, the precision requirements of the three bearing holes of each cycloid gear are very high, and the position degree requirements of the corresponding bearing holes of the two pieces of cycloid gears are also very high. At present, the processing procedure of the cycloid gear is to process the outer circle and the gear first, and then process the bearing hole based on the outer circle. The two pieces of cycloid gears can be processed respectively, in order to ensure the consistency of the two pieces of cycloid gears, the method of stacking and processing the bearing holes of the two pieces of cycloid gears at the same time is also adopted.

[0003] After searching, the Chinese utility model patent with the authorized announcement number CN212020414U discloses a cycloid gear hole position honing tool, which comprises a bottom plate, a front clamping module fixed to the front end of the bottom plate, and a rear backstop module fixed to the rear part of the bottom plate; the front clamping module comprises a front base fixed to the bottom plate and a gland matched with the front base, a front base mounting groove and a gland mounting groove are respectively arranged between the front base and the gland, and are respectively used for accommodating a first tongue block and a second tongue block arranged for fixing the cycloid gear; a handle is arranged on the gland for adjusting the front and rear positions of the first tongue block and the second tongue block, and a fine adjustment block is further arranged on the side of the connection part of the front base and the gland for fine adjustment of the position of the tongue block; the rear backstop module comprises a rear base fixed to the bottom plate, and a first backstop and a second backstop are respectively arranged on the two sides of the rear base; the first backstop and the second backstop each comprise a circular arc end matched with two layers of teeth of the cycloid gear; the first backstop and the second backstop on the two sides of the rear backstop module and the first tongue block and the second tongue block on the front clamping module jointly form a three-point positioning system to fix the cycloid gear.

[0004] The above tool has some defects. Firstly, no matter how high the machining precision is, there will be a small size error. The outer circle is used as a reference to machine the bearing hole of the cycloid wheel. When the size of the outer circle is small, the center of the cycloid wheel will be biased to the rear abutment module. When the size of the outer circle is large, the center of the cycloid wheel will be biased to the front clamping module. The position precision error of the cycloid wheel during machining is slightly large, especially when the size of the outer circle of one cycloid wheel is small and the size of the outer circle of the other cycloid wheel is large, the coaxiality error of the centers of the two cycloid wheels is larger. If the position of the rear abutment module is adjusted every time to adapt to the situation, it is very tedious. Secondly, the rear abutment module and the front clamping module actually clamp the two sides of the cycloid wheel, and the clamping force received by the cycloid wheel is not uniform, which may cause a small amount of deformation and affect the machining precision. SUMMARY

[0005] The technical problem to be solved by the present application is to provide a cycloid wheel hole grinding clamp with higher clamping precision.

[0006] The technical solution adopted by the present application to solve the technical problem is: a cycloid wheel hole grinding clamp for clamping and positioning two cycloid wheels used in pairs simultaneously, comprising a base plate, a supporting mechanism and a clamping mechanism; further comprising a driving mechanism;

[0007] The supporting mechanism is arranged on the base plate, and the supporting mechanism has an annular supporting portion. The area on the upper side of the annular supporting portion is a cycloid wheel clamping area;

[0008] The clamping mechanism comprises a clamping body arranged on the upper side of the base plate through a support. The clamping body is provided with a cutting groove which divides the clamping body into an upper clamping portion and a lower clamping portion. One end of the cutting groove close to the supporting mechanism is an open structure, and the other end is a closed structure. The upper clamping portion extends to form a pushing table at one end close to the supporting mechanism;

[0009] The clamping body is at least six. The upper clamping portion of each clamping body is provided with a clamping jaw. The clamping portion of at least three clamping jaws corresponds to the lower part of the cycloid wheel clamping area and is uniformly distributed along the circumference of the cycloid wheel clamping area, and is used for clamping and positioning one cycloid wheel. The clamping portion of at least three clamping jaws corresponds to the upper part of the cycloid wheel clamping area and is uniformly distributed along the circumference of the cycloid wheel clamping area, and is used for clamping and positioning the other cycloid wheel;

[0010] The driving mechanism comprises a driving assembly and a base arranged on the base plate. The driving assembly comprises a piston cavity opened in the base. A piston is arranged in the piston cavity to divide the piston cavity into an upper cavity and a lower cavity. The piston is connected with a piston rod. The upper end of the piston rod penetrates through the top surface of the base and is connected with a driving piece. The driving piece has a driving portion which abuts against the bottom surface of all pushing tables. The pressure in the lower cavity is adjusted. The piston drives the driving piece to move up and down to control the opening and closing of all clamping bodies, so that the clamping portions of all clamping jaws are synchronously away from or close to the cycloid wheel clamping area, and two cycloid wheels are simultaneously released or clamped.

[0011] Further, a pressurizing assembly is arranged on the base plate.

[0012] The bottom plate is provided with a flow channel for connecting the inner cavity of the pressurizing assembly with the lower cavity;

[0013] The inner cavity of the pressurizing assembly, the lower cavity and the flow channel are filled with hydraulic oil, and the pressurizing assembly can push the hydraulic oil into the lower cavity.

[0014] Further, the annular support part is composed of at least three fan-shaped annular support platforms which are arranged in an annular array around the axis of the support mechanism.

[0015] Further, the bottom plate is provided with a first detection air channel, and the support mechanism is provided with a second detection air channel which is in communication with the first detection air channel, and the air outlet of the second detection air channel is located on the fan-shaped annular support platform.

[0016] Further, the end of the cutting groove away from the support mechanism is a "C"-shaped notch, and the "C"-shaped notch is configured to form a structure capable of smooth deformation at the part of the clamping body connecting the upper clamping part and the lower clamping part.

[0017] Further, the support mechanism comprises a lower support base provided on the bottom plate, the lower support base is in a cylindrical shape, an upper support base is provided on the top of the lower support base, and the annular support part is provided on the top surface of the upper support base.

[0018] The clamping body is arranged on the base through the support column;

[0019] The driving member comprises a driving member body which is sleeved on the lower support base, the driving member body is provided with driving claws which are in an "L"-shaped vertical section, the driving claws are at least three and are uniformly distributed around the circumference of the driving member body, the top of the driving claw abuts against the bottom surface of at least one pushing platform, and the top of all the driving claws forms a driving part of the driving member.

[0020] The number of driving assemblies is equal to the number of driving claws, and the piston rod of each driving assembly is connected to the corresponding driving claw.

[0021] Further, the oscillating wheel hole grinding clamp further comprises an axial pressing mechanism, the axial pressing mechanism comprises a connecting column, a pressing cover and a lock catch assembly;

[0022] The connecting column is vertically arranged at the central part of the upper support base and passes through the oscillating wheel clamping area;

[0023] The pressing cover has three processed holes, which are arranged on the upper side of the oscillating wheel clamping area and are used to press the end face of the oscillating wheel;

[0024] The lock catch assembly is used to detachably connect the connecting column and the pressing cover together.

[0025] Further, the oscillating wheel hole grinding clamp further comprises a circumferential positioning component, the circumferential positioning component comprises a circumferential positioning seat, a seat cover, a first circumferential positioning tongue, a second circumferential positioning tongue and a handle.

[0026] The circumferential positioning seat is arranged on the bottom plate;

[0027] The seat cover is arranged on the circumferential positioning seat, and a tongue groove is arranged between the seat cover and the circumferential positioning seat;

[0028] The first circumferential positioning tongue is telescopically arranged in the tongue groove and corresponds to the lower part of the cycloid wheel clamping area, and is used for cooperating with one of the cycloid wheels to perform circumferential positioning;

[0029] The second circumferential positioning tongue is telescopically arranged in the tongue groove and corresponds to the upper part of the cycloid wheel clamping area, and is used for cooperating with the other cycloid wheel to perform circumferential positioning;

[0030] The handle is swingably arranged on the seat cover and is connected with the first circumferential positioning tongue and the second circumferential positioning tongue through the movable rod, and is used for adjusting the telescopic distance of the first circumferential positioning tongue and the second circumferential positioning tongue and can fix the two.

[0031] The beneficial effects of the present application are that the clamping mechanism includes at least six clamping bodies with clamping claws, and the clamping portions of at least three of the clamping claws correspond to the lower part of the cycloid wheel clamping area and are uniformly distributed along the circumference of the cycloid wheel clamping area, which can effectively clamp and position the cycloid wheel on the lower side; at the same time, the clamping portions of at least three of the clamping claws correspond to the upper part of the cycloid wheel clamping area and are uniformly distributed along the circumference of the cycloid wheel clamping area, which can effectively clamp and position the cycloid wheel on the upper side and ensure the coaxiality of the two cycloid wheels; the driving mechanism arranged can control the opening and closing of all clamping bodies, so that the clamping portions of all clamping claws are simultaneously away from or close to the cycloid wheel clamping area to simultaneously release or clamp the two cycloid wheels; on the one hand, the clamping portions of the clamping claws move towards the cycloid wheel simultaneously for clamping, and in the case that there is an error in the diameter of the cycloid wheel, the two cycloid wheels can also be automatically centered and kept coaxial, which ensures the clamping accuracy; on the other hand, the clamping claws corresponding to the two cycloid wheels are uniformly distributed along the circumference of the cycloid wheel clamping area and are clamped simultaneously, which ensures the uniformity of the clamping force applied to the cycloid wheels; on the other hand, the clamping operation of the clamping mechanism can be controlled by adjusting the pressure in the lower cavity, which improves the degree of automation of the clamp, not only has higher clamping and positioning efficiency, but also is beneficial to accurately controlling the clamping degree, which can further improve the clamping accuracy.

[0032] The other technical features of the present application bring about or directly produce the technical effects, which will be described in detail in the subsequent specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 is a three-dimensional structure schematic diagram of the present application;

[0034] Figure 2 is a cross-sectional structure schematic diagram of the present application;

[0035] Figure 3 This is a top view of the structure of the present invention;

[0036] Figure 4 It is along Figure 3 A partial sectional view of line AA in the middle;

[0037] Figure 5 It is along Figure 3 A partial sectional view of the middle BB line;

[0038] Figure 6 This is a three-dimensional structural schematic diagram of the upper support base in this invention;

[0039] Figure 7 This is a three-dimensional structural schematic diagram of the driving component in this invention;

[0040] Figure 8 This is a state diagram of the clamping of cycloidal wheel A and cycloidal wheel B according to the present invention;

[0041] The markings in the diagram are as follows: 100-base plate, 110-flow channel, 120-pressurization assembly, 210-lower support, 220-upper support, 221-fan-shaped annular support platform, 230-second detection airway, 310-support column, 320-clamping body, 321-groove, 322-upper clamping part, 323-lower clamping part, 324-push platform, 330-gripper, 410-base, 411-lower cavity, 420 - Piston, 430- Piston rod, 440- Drive component, 441- Drive component body, 442- Drive claw, 510- Connecting column, 520- Pressure cap, 530- Locking assembly, 600- Circumferential positioning component, 610- Circumferential positioning seat, 620- Seat cover, 630- First circumferential positioning tongue, 640- Second circumferential positioning tongue, 650- Handle, 700- Cycloidal wheel A, 800- Cycloidal wheel B;

[0042] Figure 8 The hollow arrow indicates the installation direction of cycloidal wheel A, cycloidal wheel B, and the pressure cap. Detailed Implementation

[0043] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the drawings, the same reference numerals denote components with the same or similar functions.

[0044] Combination Figures 1 to 8 As shown, the cycloidal wheel grinding fixture is used to simultaneously clamp and position two cycloidal wheels used in pairs, namely cycloidal wheel A700 and cycloidal wheel B800; the cycloidal wheel grinding fixture includes a base plate 100, a support mechanism, a clamping mechanism and a drive mechanism;

[0045] The support mechanism is used for overall bearing and stable support of two overlapped cycloid wheels; the support mechanism is arranged on the bottom plate 100, and has a ring-shaped support portion for supporting the end face of the cycloid wheel; the height of the cycloid wheel clamping area is equal to the sum of the thicknesses of the two cycloid wheels, and the diameter is equal to the addendum circle diameter of the cycloid wheel;

[0046] The clamping mechanism includes a clamping body 320 arranged on the upper side of the bottom plate 100 through a support column 310, and the clamping body 320 is provided with a cutting groove 321 for cutting the clamping body 320 into an upper clamping portion 322 and a lower clamping portion 323; one end of the cutting groove 321 close to the support mechanism is an open structure, and the other end (far away from the support mechanism) is a closed structure, so that the end of the clamping body 320 close to the support mechanism can be opened and closed; the end of the upper clamping portion 322 close to the support mechanism is extended to form a push table 324, which is used as a force receiving part for opening the upper clamping portion 322 relative to the lower clamping portion 323;

[0047] The clamping body 320 is at least six, and the upper clamping portion 322 of each clamping body 320 is provided with a clamping jaw 330; the clamping portions of at least three clamping jaws 330 correspond to the lower part of the cycloid wheel clamping area and are uniformly distributed along the circumference of the cycloid wheel clamping area, and are used for clamping and positioning one of the cycloid wheels, such as the cycloid wheel A700; the clamping portions of at least three clamping jaws 330 correspond to the upper part of the cycloid wheel clamping area and are uniformly distributed along the circumference of the cycloid wheel clamping area, and are used for clamping and positioning the other cycloid wheel, such as the cycloid wheel B800; the clamping portion of the clamping jaw 330 is the end of the clamping jaw 330 towards the cycloid wheel clamping area, which is usually arc-shaped; after the cycloid wheels are placed in the cycloid wheel clamping area, the clamping portions of at least three clamping jaws 330 can be clamped on the addendum circle of the cycloid wheel to fix and position it; in order to ensure clamping accuracy, it is preferred that after all the clamping jaws 330 are installed in place, the clamping portions of the clamping jaws 330 are uniformly machined to ensure the concentricity of the clamping portions and ensure that all the clamping portions match the circumference of the cycloid wheel clamping area; in order to avoid damaging the tooth structure of the cycloid wheel, the clamping portion of the clamping jaw 330 is usually made of a material softer than the cycloid wheel, and whether the clamping portion of the clamping jaw 330 is hardened can be selected according to specific clamping requirements;

[0048] The driving mechanism comprises a driving assembly and a base 410 arranged on the bottom plate 100; the driving assembly comprises a piston cavity opened in the base 410, the piston cavity is provided with a piston 420 separating the piston cavity into an upper cavity and a lower cavity 411, the piston 420 is connected with a piston rod 430, the upper end of the piston rod 430 is arranged out of the top surface of the base 410 and connected with a driving piece 440, the driving piece 440 is provided with a driving part abutting against the bottom surface of all the push tables 324; the pressure in the lower cavity 411 is controlled, the piston 420 drives the driving piece 440 to move up and down to control the opening and closing of all the clamping bodies 320, so that the clamping parts of all the clamping jaws 330 are synchronously away from or close to the cycloid wheel clamping area, and two cycloid wheels are simultaneously released or clamped.

[0049] Specifically, as shown in Figure 1 and Figure 8 The process of simultaneously clamping and positioning the cycloid wheel A 700 and the cycloid wheel B 800 by the cycloid wheel hole grinding clamp is as follows: S1, the lower cavity 411 is pressurized, the piston 420 drives the piston rod 430 and the driving piece 440 to move upwards, and then the driving part of the driving piece 440 lifts the push table 324, so that the upper clamping part 322 is opened relative to the lower clamping part 323, the clamping part of the clamping jaw 330 is lifted and away from the cycloid wheel clamping area, so as to leave a position for two cycloid wheels to be overlapped and placed in the cycloid wheel clamping area; S2, after the two cycloid wheels are placed, the lower cavity 411 is depressurized, due to the decrease of the pressure in the lower cavity 411, under the comprehensive action of the gravity of the piston 420, the piston rod 430 and the driving piece 440 and the elastic restoring force of the clamping body 320, the piston 420, the piston rod 430 and the driving piece 440 move downwards, the upper clamping part 322 is closed relative to the lower clamping part 323, the clamping part of the clamping jaw 330 is reset and clamps and positions the corresponding cycloid wheel, and the degree of depressurization of the lower cavity 411 can control the size of the clamping force of the clamping jaw 330 on the cycloid wheel; then, consistent bearing holes can be honed on the two cycloid wheels; S3, after the bearing hole processing is completed, the driving mechanism can be controlled in the same way as step S1 to release the cycloid wheel, and finally the two cycloid wheels are taken out. Note: during the clamping and positioning process, the contact between the clamping part of the clamping jaw 330 and the cycloid wheel is approximately linear contact, so the clamping part of the clamping jaw 330 is slightly lifted to release the cycloid wheel. The clamping part of the clamping jaw 330 in the drawing is only a schematic structure and does not constitute a limitation on the thickness of the clamping part.

[0050] During the clamping and positioning process, the clamping portions of the at least three clamping claws 330 correspond to the lower part of the cycloid wheel clamping area and are uniformly distributed along the circumference of the cycloid wheel clamping area, so that the cycloid wheel A 700 on the lower side can be effectively clamped and positioned; at the same time, the clamping portions of the at least three clamping claws 330 correspond to the upper part of the cycloid wheel clamping area and are uniformly distributed along the circumference of the cycloid wheel clamping area, so that the cycloid wheel B 800 on the upper side can be effectively clamped and positioned, and the coaxiality of the two cycloid wheels is ensured. Moreover, since the opening and closing of all clamping bodies 320 are controlled by regulating the pressure in the lower cavity 411, the clamping portions of all clamping claws 330 can be synchronized to move away from or close to the cycloid wheel clamping area, so that the two cycloid wheels are simultaneously released or clamped. On the one hand, the clamping portions of the clamping claws 330 move towards the cycloid wheel for clamping at the same time, and in the case of diameter error of the cycloid wheel, the two cycloid wheels can be automatically centered and kept coaxial, ensuring the clamping accuracy; on the other hand, the clamping claws 330 corresponding to the two cycloid wheels are uniformly distributed along the circumference of the cycloid wheel clamping area and are clamped at the same time, ensuring the uniformity of the clamping force applied to the cycloid wheel; on the other hand, the clamping operation of the clamping mechanism can be controlled by regulating the pressure in the lower cavity 411, improving the degree of automation of the clamp, not only the clamping and positioning efficiency is higher, but also the clamping degree can be accurately controlled, which can further improve the clamping accuracy.

[0051] In combination with Figure 1 , Figure 2 and Figure 3 , in some embodiments, the bottom plate 100 is provided with a pressurizing assembly 120; the bottom plate 100 is provided with a flow channel 110 for connecting the inner cavity of the pressurizing assembly 120 with the lower cavity 411; the inner cavity of the pressurizing assembly 120, the lower cavity 411 and the flow channel 110 are filled with hydraulic oil, and the pressurizing assembly 120 can push the hydraulic oil into the lower cavity 411. In this way, the opening and closing of the clamping body 320 can be controlled by transferring pressure to the lower cavity 411 through the oil circuit, and the clamping force of the clamping claw 330 for clamping and fixing the cycloid wheel can be efficiently and accurately controlled. The pressurizing assembly 120 can be of various types, and is preferably an injection cylinder, which includes an injection cylinder barrel and a push injection rod arranged in the injection cylinder barrel, and the inner end of the push injection rod is a piston head.

[0052] In combination with Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6 and Figure 8 , in some embodiments, the upper support seat 220 has a bowl-shaped structure, which includes an upper support seat bottom plate and an upper support seat cylinder wall formed by extending the edge of the upper support seat bottom plate upward, and the upper support seat cylinder wall is usually provided with a hollow structure. The structure of the upper support seat 220 is simple and easy to manufacture, which can not only effectively support the cycloid wheel, but also can hold the cutting chips generated during machining in the inner cavity.

[0053] In combination Figure 6 and Figure 8 As shown in FIG. 13, in some embodiments, the annular support portion is composed of at least three fan-shaped annular support tables 221 arranged in a circular array around the axis of the support mechanism. By supporting the cycloid gear with the plurality of discrete fan-shaped annular support tables 221, more than three statically determinate supports can be formed compared with the annular support surface, thereby avoiding the problem of unstable support caused by insufficient flatness accuracy of the annular support surface. Moreover, the contact area and pressure distribution of the support can be effectively controlled to avoid the problem of local stress concentration, which is conducive to improving the accuracy of subsequent machining of the cycloid gear.

[0054] In combination Figure 2 and Figure 6 As shown in FIG. 14, on the basis of the previous embodiment, a first detection air channel is provided in the bottom plate 100, and a second detection air channel 230 is provided in the support mechanism and is in communication with the first detection air channel. The air outlet of the second detection air channel 230 is located on the fan-shaped annular support table 221. After the cycloid gear hole clamp clamps the cycloid gear, air is supplied to the first detection air channel, and the air tightness at the air outlet of the second detection air channel 230 is detected, so as to determine whether the cycloid gear is effectively attached to the fan-shaped annular support table 221.

[0055] In combination Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown in FIG. 15, in some embodiments, the end of the cutting groove 321 away from the support mechanism is a “C”-shaped notch. The “C”-shaped notch is configured to form a structure capable of smooth deformation at the position where the clamping body 320 connects the upper clamping portion 322 and the lower clamping portion 323. The smooth deformation means that the position where the clamping body 320 connects the upper clamping portion 322 and the lower clamping portion 323 can continuously and gradually deform during the opening and closing process. The “C”-shaped notch can avoid the problem of stress concentration at the end due to the existence of sharp corners while achieving the closure of the end of the cutting groove 321 away from the support mechanism, thereby enhancing the structural strength of the clamping body 320 and making the clamping body 320 not prone to cracking or damage after multiple opening and closing.

[0056] In combination Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 7 and Figure 8As shown in the drawings, in some embodiments, the support mechanism includes a lower support seat 210 arranged on the base plate 100, the lower support seat 210 is cylindrical, an upper support seat 220 is arranged on the top of the lower support seat 210, and an annular support part is arranged on the top surface of the upper support seat 220; the clamping body 320 is arranged on the base 410 through the support column 310; the driving member 440 includes a driving member body 441 sleeved on the lower support seat 210, a driving claw 442 with a vertical section in the shape of "L" is arranged on the driving member body 441, the driving claw 442 is at least three and is uniformly distributed around the circumference of the driving member body 441, the top of the driving claw 442 abuts against the bottom surface of at least one push table 324, and the top of all the driving claws 442 constitutes a driving part of the driving member 440; the number of driving assemblies is equal to the number of driving claws 442, and the piston rod 430 of each driving assembly is connected to the corresponding driving claw 442. In this way, the driving member 440 with a rotational symmetry structure can be formed, the rigidity and movement accuracy of the driving member 440 are improved, the synchronism and uniformity of force of each clamping body 320 during the opening and closing process of the driving clamping body 320 are ensured, and the accuracy of the clamping jaw 330 clamping the cycloidal gear is further improved.

[0057] In combination with Figure 1 , Figure 2 , Figure 3 and Figure 8 As shown in the drawings, in some embodiments, the cycloidal gear hole grinding clamp further includes an axial pressing mechanism, the axial pressing mechanism includes a connecting column 510, a gland 520 and a lock catch assembly 530; the connecting column 510 is vertically arranged at the central part of the upper support seat 220 and penetrates through the cycloidal gear clamping area; the gland 520 has three through holes processed, which are arranged on the upper side of the cycloidal gear clamping area and used for pressing the end face of the cycloidal gear; the lock catch assembly 530 is used for detachably connecting the connecting column 510 and the gland 520 together. The axial pressing mechanism can provide reliable axial clamping force for the cycloidal gear, which is beneficial to improve the rigidity of the cycloidal gear with a thin sheet structure and ensure the accuracy of the bearing hole honing on the cycloidal gear. The detachable connection means that the connection relationship between the connecting column 510 and the gland 520 can be repeatedly disassembled, which can be realized by screw connection, bolt connection, buckle connection and the like. The lock catch assembly 530 generally includes a locking screw connected with the connecting column 510 and a hook rotatably arranged on the gland 520 through a screw column; the hook can be hooked on the locking screw.

[0058] In combination with Figure 1 , Figure 2 , Figure 3 and Figure 8 Figure 1 Figure 2 Figure 3 Figure 8As shown, in some embodiments, the cycloid wheel hole grinding clamp further comprises a circumferential positioning component 600, which comprises a circumferential positioning seat 610, a seat cover 620, a first circumferential positioning tongue 630, a second circumferential positioning tongue 640 and a handle 650; the circumferential positioning seat 610 is arranged on the bottom plate 100; the seat cover 620 is arranged on the circumferential positioning seat 610, and a tongue groove is arranged between the circumferential positioning seat 610 and the seat cover 620; the first circumferential positioning tongue 630 is telescopically arranged in the tongue groove and corresponds to the lower part of the cycloid wheel clamping area, and is used for circumferential positioning with one of the cycloid wheels; the second circumferential positioning tongue 640 is telescopically arranged in the tongue groove and corresponds to the upper part of the cycloid wheel clamping area, and is used for circumferential positioning with the other cycloid wheel; the handle 650 is swingably arranged on the seat cover 620 and connected with the first circumferential positioning tongue 630 and the second circumferential positioning tongue 640 through a movable rod, and is used for adjusting the telescopic distance of the first circumferential positioning tongue 630 and the second circumferential positioning tongue 640 and fixing the two. The circumferential positioning component 600 can circumferentially position the cycloid wheel A 700 and the cycloid wheel B 800 and make them staggered by an angle of 360° / cycloid wheel tooth number, which meets the processing requirements of the cycloid wheel and further improves the clamping and positioning effect of the cycloid wheel hole grinding clamp, so as to improve the machining precision of the subsequent bearing hole honing. A first slot is usually arranged on the seat cover 620 along the telescopic direction of the first circumferential positioning tongue 630 and the second circumferential positioning tongue 640, a second slot is arranged on the handle 650 and crosses the first slot, and the movable rod is arranged through the first slot and the second slot. A third slot is usually arranged on the handle 650, a locking block is arranged in the third slot, and the locking block can limit the swing of the handle 650 in cooperation with the seat cover 620.

Claims

1. A cycloid wheel hole grinding clamp for clamping and positioning two cycloid wheels used in pairs simultaneously, comprising a base plate (100), a supporting mechanism and a clamping mechanism; characterized in that: Also include driving mechanism; The support mechanism includes a lower support seat (210) arranged on the bottom plate (100), the lower support seat (210) is cylindrical, and the upper support seat (210) is provided with an upper support seat (220) on the top; The support mechanism has an annular support part, which is arranged on the top surface of the upper support seat (220), and the area on the upper side of the annular support part is a cycloidal gear clamping area; The clamping mechanism includes a clamping body (320) arranged on the upper side of the bottom plate (100), and the clamping body (320) is provided with a cutting groove (321) which is cut into an upper clamping part (322) and a lower clamping part (323); The one end of the cutting groove (321) close to the support mechanism is an open structure, and the other end is a closed structure; The one end of the upper clamping part (322) close to the support mechanism extends to form a push table (324); The clamping body (320) is at least six, and the upper clamping part (322) of each clamping body (320) is provided with a clamping jaw (330); The clamping part of at least three clamping jaws (330) corresponds to the lower part of the cycloidal gear clamping area and is uniformly distributed along the circumference of the cycloidal gear clamping area, which is used for clamping and positioning one of the cycloidal gears; The clamping part of at least three clamping jaws (330) corresponds to the upper part of the cycloidal gear clamping area and is uniformly distributed along the circumference of the cycloidal gear clamping area, which is used for clamping and positioning another cycloidal gear; The driving mechanism includes a driving assembly, a driving member (440) and a base (410) arranged on the bottom plate (100); The clamping body (320) is arranged on the base (410) through the support column (310); The driving assembly includes a piston cavity opened in the base (410), and a piston (420) is arranged in the piston cavity to separate the piston cavity into an upper cavity and a lower cavity (411); The piston (420) is connected with a piston rod (430), and the upper end of the piston rod (430) penetrates out of the top surface of the base (410) and is connected with the driving member (440); The driving member (440) has a driving part abutting against the bottom surface of all the push tables (324); The driving member (440) includes a driving member body (441) sleeved on the lower support seat (210), and a driving claw (442) with a vertical section in the shape of "L" is arranged on the driving member body (441); There are at least three driving claws (442) which are uniformly distributed around the circumference of the driving member body (441), and the top of the driving claw (442) abuts against the bottom surface of at least one push table (324); The top of all the driving claws (442) constitutes the driving part of the driving member (440); The number of driving assemblies is equal to the number of driving claws (442), and the piston rod (430) of each driving assembly is connected with each driving claw (442) one by one; The pressure in the lower cavity (411) is controlled, the driving member (440) is driven to move up and down by the piston (420), the opening and closing of all clamping bodies (320) are controlled, the clamping parts of all clamping jaws (330) are simultaneously away from or close to the cycloidal gear clamping area, and two cycloidal gears are released or clamped.

2. The trochoid wheel lapping jig according to claim 1, wherein: A pressurizing assembly (120) is arranged on the bottom plate (100); A flow channel (110) is arranged in the bottom plate (100) to communicate the inner cavity of the pressurizing assembly (120) with the lower cavity (411); The inner cavity of the pressurizing assembly (120), the lower cavity (411) and the flow channel (110) are filled with hydraulic oil, and the pressurizing assembly (120) can push the hydraulic oil into the lower cavity (411).

3. The trochoid wheel lapping jig of claim 1 wherein: The annular support part is composed of at least three fan-shaped annular support platforms (221) arranged in an annular array around the axis of the support mechanism.

4. The trochoid wheel hone jig of claim 3 wherein: The bottom plate (100) is provided with a first detection air channel, and the support mechanism is provided with a second detection air channel (230) in communication with the first detection air channel, and the air outlet of the second detection air channel (230) is on the fan-shaped annular support platform (221).

5. The trochoid wheel hone jig of claim 1 wherein: The end of the cutting groove (321) away from the support mechanism is a "C" shaped notch, which is configured to form a structure capable of smooth deformation at the part where the clamping body (320) connects the upper clamping part (322) and the lower clamping part (323).

6. The trochoid wheel lapping jig according to any one of claims 1 to 5, characterized in that: The axial compression mechanism includes a connecting column (510), a gland (520) and a lock catch assembly (530); The connecting column (510) is vertically arranged at the central part of the upper support seat (220) and passes through the cycloidal gear clamping area; The gland (520) has three through holes, which are arranged on the upper side of the cycloidal gear clamping area and used to compress the end face of the cycloidal gear; The lock catch assembly (530) is used to detachably connect the connecting column (510) and the gland (520).

7. The trochoid wheel lapping jig of claim 6 wherein: The circumferential positioning component (600) includes a circumferential positioning seat (610), a seat cover (620), a first circumferential positioning tongue (630), a second circumferential positioning tongue (640) and a handle (650); The circumferential positioning seat (610) is arranged on the bottom plate (100); The seat cover (620) is arranged on the circumferential positioning seat (610), and a tongue groove is arranged between the seat cover (620) and the circumferential positioning seat (610); The first circumferential positioning tongue (630) is telescopically arranged in the tongue groove and corresponds to the lower part of the cycloidal gear clamping area, and is used to cooperate with one of the cycloidal gears for circumferential positioning; The second circumferential positioning tongue (640) is telescopically arranged in the tongue groove and corresponds to the upper part of the cycloidal gear clamping area, and is used to cooperate with the other cycloidal gear for circumferential positioning; The handle (650) is swingably arranged on the seat cover (620) and connected with the first circumferential positioning tongue (630) and the second circumferential positioning tongue (640) through the movable rods, respectively, and is used to adjust the telescopic distance of the first circumferential positioning tongue (630) and the second circumferential positioning tongue (640) and fix them.

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