Automatic workpiece clamping device for gear grinding machine

Abstract

The present invention discloses an automatic workpiece clamping device for a gear grinding machine, comprising a top mechanism that is horizontally arranged and connected to a workpiece spindle, an inner cone support that is connected to the top mechanism and arranged at the end of the top mechanism away from the workpiece spindle, and an outer cone spring chuck that is arranged in the inner cone support and cooperates with the top mechanism. The present invention uses a transition connection component to connect the outer cone spring chuck and the pull rod as a whole, and the outer cone spring chuck is driven by a hydraulic cylinder to move forward or backward, clamp or loosen the workpiece spindle, and is convenient for clamping and disassembling the workpiece, and can ensure high clamping accuracy. The parts can also be clamped and loosened at any time during the processing according to requirements, solving the problem that the traditional clamping device uses a fork device to clamp the workpiece, must clamp manually, and has uneven clamping force.

Description

Technical Field

[0001] The invention belongs to the technical field of gear grinding, and in particular relates to an automatic workpiece clamping device for a gear grinding machine. Background Art

[0002] The automatic clamping mechanism of the CNC gear grinding machine is a commonly used clamping component of the machine tool. When processing slender gears and disc teeth, the center of the workpiece needs to be used in conjunction with the fork and the tailstock center to ensure that the workpiece rotation center and the workpiece spindle rotation center are in one line to ensure processing accuracy. Generally speaking, there will always be a rotation processing assembly error in the rotation of the spindle or the center of the workpiece. As the length of the workpiece increases, this error will be magnified. Therefore, only by ensuring that the rotation center of the spindle center and the workpiece rotation center are in a straight line as much as possible can high-precision parts be processed. This clamping method of two centers plus a fork is a commonly used clamping method in gear grinding. There are obvious disadvantages when using this clamping method for clamping: one is that it is easy to clamp eccentrically, affecting the quality of gear grinding; one is that the screws loosen during the grinding process, causing eccentric grinding; the last one is that workers can only manually load and unload the workpiece, and automatic loading and unloading cannot be achieved. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an automatic workpiece clamping device for a gear grinding machine in view of the deficiencies in the above-mentioned prior art. The outer cone spring chuck and the pull rod are connected as a whole by utilizing a transition connection assembly, and the outer cone spring chuck is moved forward or backward under the drive of a hydraulic cylinder to clamp or loosen the workpiece core shaft. The clamping and disassembly of the workpiece is convenient, and a high clamping accuracy can be guaranteed. The parts can also be clamped and loosened at any time during the processing as required, thereby solving the problem that the traditional clamping device uses a fork device to clamp the workpiece, manual clamping is required, and the clamping force is uneven.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: an automatic workpiece clamping device for a gear grinding machine, characterized in that it includes a top mechanism arranged horizontally and connected to the workpiece spindle, an inner cone support connected to the top mechanism and arranged at the end of the top mechanism away from the workpiece spindle, and an outer cone spring chuck arranged in the inner cone support and matched with the top mechanism;

[0005] The top mechanism is connected to the end face of the workpiece spindle through an auxiliary connection component, the top mechanism is connected to the inner cone support through a first connection piece, the top mechanism is connected to the outer cone spring chuck through a transition connection component, and the inner cone support is connected to the outer cone spring chuck through a second connection piece;

[0006] The centering mechanism comprises a horizontally arranged centering point and a pull rod connected to the centering point and used to drive the outer cone spring chuck to move, the pull rod is horizontally arranged at one end of the centering point away from the outer cone spring chuck, and the center axis of the centering point, the center axis of the pull rod and the center axis of the workpiece mandrel coincide with each other;

[0007] The pull rod and the outer cone spring chuck are connected as a whole through a transition connection assembly; the center is connected to the end face of the workpiece spindle through the auxiliary connection assembly, and the inner cone support is connected to the center through the first connecting piece; the end of the pull rod away from the center is connected to a hydraulic cylinder; the outer cone spring chuck is coaxially sleeved between the center and the inner cone support.

[0008] The above-mentioned automatic workpiece clamping device for a gear grinding machine is characterized in that a cover plate is provided on the end surface of the inner cone support away from the workpiece spindle, and the cover plate is connected to the inner cone support through a third connecting member.

[0009] The above-mentioned automatic workpiece clamping device for a gear grinding machine is characterized in that a tapered flange is sleeved between the top and the workpiece spindle, the axis of the tapered flange coincides with the axis of the workpiece core shaft, and the pull rod passes horizontally through the tapered flange.

[0010] The above-mentioned automatic workpiece clamping device for a gear grinding machine is characterized in that: the transition connection assembly includes a transition plate coaxially sleeved on the outer conical spring chuck and matched with the outer conical spring chuck, and a plurality of fourth connecting parts all horizontally arranged and used to connect the pull rod and the transition plate, the transition plate is sleeved on the outside of the outer conical spring chuck, and the outer conical spring chuck and the transition plate are connected by threads; a through hole for the installation of the fourth connecting part is opened on the transition plate; the fourth connecting part horizontally passes through the pull rod and the top in sequence and then extends to the through hole of the transition plate, a guide sleeve is arranged in the top, and the guide sleeve is horizontally arranged between the transition plate and the pull rod.

[0011] The above-mentioned automatic workpiece clamping device for a gear grinding machine is characterized in that: the top point includes a top point portion horizontally arranged and matched with the workpiece core shaft, a mounting portion arranged at the end of the top point portion, and a mounting ring coaxially sleeved on the outside of the mounting portion, the central axis of the top point portion, the central axis of the mounting portion, and the central axis of the mounting ring all coincide with the central axis of the workpiece core shaft, and the top point portion, the mounting portion, and the mounting ring are integrally formed.

[0012] The above-mentioned automatic workpiece clamping device for a gear grinding machine is characterized in that: the end of the top portion away from the mounting portion is a conical structure, and the conical structure cooperates with the top hole on the workpiece core shaft;

[0013] The mounting portion is provided with a plurality of first mounting holes for mounting the guide sleeve, and the plurality of first mounting holes are evenly arranged along the circumferential direction of the mounting portion; the mounting portion is provided with an insertion groove on one side away from the top portion, and the center line of the insertion groove coincides with the center axis of the mounting portion;

[0014] The mounting ring is provided with a plurality of second mounting holes for mounting the fifth connecting member, and the mounting ring is also provided with a plurality of third mounting holes for mounting the sixth connecting member, the second mounting holes and the third mounting holes are evenly arranged along the circumferential direction of the mounting ring, and the second mounting holes and the third mounting holes are staggered; the fifth connecting member and the sixth connecting member are both horizontally arranged between the top and the end face of the workpiece spindle, and the fifth connecting member and the sixth connecting member constitute the auxiliary connecting component.

[0015] The above-mentioned automatic workpiece clamping device for a gear grinding machine is characterized in that: the pull rod includes a horizontally arranged connecting rod section, and a fixed rod section sleeved on the connecting rod section and used to be connected to the outer cone spring chuck, and the connecting rod section and the fixed rod section are integrally formed; the connecting rod section passes through the tapered flange and the mounting ring and then extends into the insertion groove;

[0016] The fixed rod segment is provided with a through hole for installing the fourth connecting member, and the fixed rod segment is arranged in the mounting ring. The fourth connecting member horizontally passes through the through hole on the fixed rod segment and the first mounting hole in sequence, and then extends to the through hole on the transition plate to connect the pull rod, the top and the transition plate.

[0017] The above-mentioned automatic workpiece clamping device for a gear grinding machine is characterized in that: the inner cone support includes a connecting part coaxially arranged with the top end and cooperating with the mounting ring, and a sleeve part horizontally arranged on one side of the connecting part, the sleeve part is arranged on the side of the connecting part away from the pull rod, an auxiliary connecting part is arranged between the connecting part and the sleeve part, and the connecting part, the sleeve part and the auxiliary connecting part are integrally formed.

[0018] The above-mentioned automatic workpiece clamping device for a gear grinding machine is characterized in that: a first insertion hole for the top to pass through is opened in the middle of the connecting part; a plurality of second insertion holes for the first connecting member to be installed are opened on the connecting part, and the plurality of second insertion holes are evenly arranged along the circumferential direction of the connecting part, and the second insertion holes are arranged on the side of the connecting part away from the pull rod;

[0019] The auxiliary connecting part is a truncated cone structure, and a third insertion hole for installing the top and the outer cone spring chuck is provided in the middle of the auxiliary connecting part;

[0020] A fourth insertion hole for installing the top and the outer cone spring chuck is provided in the middle of the sleeve portion, the center lines of the first insertion hole, the third insertion hole and the fourth insertion hole coincide with each other, and the first insertion hole, the third insertion hole and the fourth insertion hole are connected; a fifth insertion hole for installing the third connecting piece is provided on the end surface of the sleeve portion away from the connecting portion, and the plurality of fifth insertion holes are evenly arranged along the circumferential direction of the sleeve portion; a plurality of sixth insertion holes for installing the second connecting piece are also provided on the sleeve portion, and the center lines of the sixth insertion holes are perpendicular to the central axis of the sleeve portion.

[0021] The above-mentioned automatic workpiece clamping device for a gear grinding machine is characterized in that: the outer cone spring chuck comprises a matching portion, a transition portion, a positioning portion, and an enlarged portion arranged in sequence in a direction away from the pull rod, the matching portion and the top portion are arranged coaxially, the transition disk is sleeved on the matching portion, and the matching portion is threadedly connected to the transition disk, and a first positioning hole for the top portion to pass through is opened in the middle of the matching portion;

[0022] The transition portion is coaxially arranged with the top portion, and a second positioning hole for the top portion to pass through is opened in the middle of the transition portion;

[0023] A third positioning hole is provided in the middle of the positioning portion for the top to pass through, and a plurality of fourth positioning holes are provided on the positioning portion to match the sixth insertion hole, the center line of the fourth positioning hole is perpendicular to the center axis of the positioning portion, and the plurality of fourth positioning holes are evenly arranged along the circumferential direction of the positioning portion;

[0024] The enlarged portion is a truncated cone-shaped structure, and a fifth positioning hole for the top to pass through is opened in the middle of the enlarged portion;

[0025] The center lines of the first positioning hole, the second positioning hole, the third positioning hole, and the fifth positioning hole coincide with each other, and the first positioning hole, the second positioning hole, the third positioning hole, and the fifth positioning hole are connected.

[0026] Compared with the prior art, the present invention has the following advantages:

[0027] 1. The present invention uses a transition connection assembly to connect the outer cone spring chuck and the pull rod as a whole, and the outer cone spring chuck is moved forward or backward under the drive of the hydraulic cylinder to clamp or loosen the workpiece core shaft. It is convenient to clamp and disassemble the workpiece, and can ensure high clamping accuracy. The parts can also be clamped and loosened at any time during the processing as required, which solves the problem that the traditional clamping device uses a fork device to clamp the workpiece, must clamp manually, and has uneven clamping force.

[0028] 2. The present invention combines an outer cone spring chuck with an inner cone support and utilizes a hydraulic cylinder to drive the outer cone spring chuck to achieve bidirectional movement, thereby completing automatic clamping and loosening of the workpiece, with high clamping accuracy, simple structure, and convenient operation.

[0029] 3. The present invention utilizes a hydraulic cylinder to drive the outer cone spring chuck to move forward or backward. Even if there is a sudden power outage, the outer cone spring chuck can release the workpiece under the automatic pressure relief effect of the hydraulic cylinder, thereby protecting the workpiece from being scrapped due to a sudden power outage, realizing automatic loading and unloading, avoiding the need to adjust the locking screws during loading and unloading in traditional construction, and improving construction efficiency.

[0030] 4. The center fixes the workpiece core shaft in the present invention, and the pull rod and the outer cone spring chuck are connected as a whole through a transition connection assembly, which not only ensures high-precision center positioning, but also enables the outer cone spring chuck to have axial movement.

[0031] In summary, the present invention connects the outer cone spring chuck and the pull rod as a whole by utilizing a transition connection assembly, and realizes the advancement or retreat of the outer cone spring chuck under the drive of the hydraulic cylinder, thereby clamping or loosening the workpiece core shaft, making it convenient to clamp and disassemble the workpiece, and can ensure high clamping accuracy. Parts can also be clamped and loosened at any time during the processing as required, thereby solving the problem that the traditional clamping device uses a fork device to clamp the workpiece, must clamp manually, and has uneven clamping force.

[0032] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of the present invention.

[0034] Figure 2 It is the front view of the top of the present invention.

[0035] Figure 3 It is the left side view of the top of the present invention.

[0036] Figure 4 It is the front view of the inner cone support of the present invention.

[0037] Figure 5 It is the right side view of the inner cone support of the present invention.

[0038] Figure 6 It is a top view of the outer cone spring chuck of the present invention.

[0039] Figure 7 For the present invention Figure 6 AA section view.

[0040] Figure 8 For the present invention Figure 6BB cross-sectional view.

[0041] Description of reference numerals:

[0042] 1—Inner cone support; 1-1—Connecting part; 1-2—Setting part;

[0043] 1-3—first insertion hole; 1-4—fourth insertion hole; 1-5—auxiliary connection part;

[0044] 1-6—second insertion hole; 1-7—third insertion hole; 1-8—fifth insertion hole;

[0045] 1-9—sixth insertion hole; 2—external cone spring chuck; 2-1—matching portion;

[0046] 2-2—transition part; 2-3—positioning part; 2-4—enlarged part;

[0047] 2-5—first positioning hole; 2-6—second positioning hole; 2-7—arc-shaped groove;

[0048] 2-8—third positioning hole; 2-9—fourth positioning hole; 2-10—fifth positioning hole;

[0049] 3—tapered flange; 4—cover plate; 5—top;

[0050] 5-1—top part; 5-2—mounting part; 5-3—mounting ring;

[0051] 5-4—first mounting hole; 5-5—insertion slot; 5-6—second mounting hole;

[0052] 5-7—third mounting hole; 6—pull rod; 6-1—connecting rod section;

[0053] 6-2—fixed rod section; 7—guide sleeve; 8—transition plate;

[0054] 9—workpiece spindle; 10—hexagon socket head screw; 11—hexagon socket cylindrical end set screw. DETAILED DESCRIPTION

[0055] like Figures 1 to 8 As shown, the present invention comprises a top mechanism horizontally arranged and connected to a workpiece spindle, an inner cone support 1 connected to the top mechanism and arranged at an end of the top mechanism away from the workpiece spindle, and an outer cone spring chuck 2 arranged in the inner cone support 1 and matched with the top mechanism;

[0056] The top mechanism is connected to the end face of the workpiece spindle through an auxiliary connection component, the top mechanism is connected to the inner cone support 1 through a first connection piece, the top mechanism is connected to the outer cone spring chuck 2 through a transition connection component, and the inner cone support 1 is connected to the outer cone spring chuck 2 through a second connection piece;

[0057] The centering mechanism comprises a centering tip 5 arranged horizontally and a pull rod 6 connected to the centering tip 5 and used to drive the outer cone spring chuck 2 to move, the pull rod 6 is arranged horizontally at one end of the centering tip 5 away from the outer cone spring chuck 2, and the center axis of the centering tip 5, the center axis of the pull rod 6 and the center axis of the workpiece mandrel 9 coincide with each other;

[0058] The pull rod 6 and the outer cone spring chuck 2 are connected as a whole through a transition connection assembly; the top 5 is connected to the end face of the workpiece spindle through the auxiliary connection assembly, and the inner cone support 1 is connected to the top 5 through the first connecting piece; the end of the pull rod 6 away from the top 5 is connected to a hydraulic cylinder; the outer cone spring chuck 2 is coaxially sleeved between the top 5 and the inner cone support 1.

[0059] In actual use, the present invention connects the outer cone spring chuck 2 and the pull rod 6 as a whole by utilizing a transition connection assembly, and realizes the advancement or retreat of the outer cone spring chuck 2 under the drive of the hydraulic cylinder, thereby clamping or loosening the workpiece core shaft 9, making it convenient to clamp and disassemble the workpiece, and can ensure high clamping accuracy. Parts can also be clamped and loosened at any time during the processing as required, thereby solving the problem that the traditional clamping device uses a fork device to clamp the workpiece, must clamp manually, and has uneven clamping force.

[0060] Among them, by combining the outer cone spring chuck 2 and the inner cone support 1, the outer cone spring chuck 2 is driven by a hydraulic cylinder to achieve bidirectional movement, thereby completing automatic clamping and loosening of the workpiece, with high clamping accuracy, simple structure and convenient operation.

[0061] In addition, the outer cone spring chuck 2 is driven forward or backward by the hydraulic cylinder. Even if there is a sudden power outage, the outer cone spring chuck 2 can release the workpiece under the automatic pressure relief effect of the hydraulic cylinder, thereby protecting the workpiece from being scrapped due to a sudden power outage, realizing automatic loading and unloading, avoiding the need to adjust the locking screws during loading and unloading in traditional construction, and improving construction efficiency.

[0062] It should be noted that the center 5 fixes the workpiece core shaft 9, and the pull rod 6 and the outer cone spring chuck 2 are connected as a whole through a transition connection component, which not only ensures high-precision center positioning, but also enables the outer cone spring chuck 2 to have axial movement.

[0063] In particular, the clamping force of the outer cone spring chuck 2 is uniform and adjustable, and the radial force is generated by the relative movement of the outer cone spring chuck 2 and the inner cone support 1 to clamp the workpiece core shaft 9, and the force is uniform and will not be clamped off. The hydraulic station pressure regulating valve can be adjusted according to the size and weight of the workpiece, thereby adjusting the radial force of the outer cone spring chuck 2. In order to prevent the outer cone spring chuck 2 from rotating, the second connecting member is combined with the fourth positioning hole 2-9 on the outer cone spring chuck 2, so that the outer cone spring chuck 2 can only move axially but not rotate.

[0064] In actual use, the first connecting member, the third connecting member, the fourth connecting member and the fifth connecting member are all made of hexagon socket head screws 10, and the second connecting member and the sixth connecting member are all made of hexagon socket cylindrical end set screws 11.

[0065] It should be noted that the process of automatically clamping a workpiece using the automatic clamping device of the gear grinding machine is as follows:

[0066] Step 1: Install the automatic workpiece clamping device: Use the fifth connecting member and the sixth connecting member to install the automatic workpiece clamping device on the end surface of the workpiece spindle;

[0067] Step 2, adjusting and fixing the position of the gear to be ground: adjusting the center position of the gear to be ground so that the top portion 5-1 is inserted into the top hole of the workpiece mandrel 9, starting the hydraulic cylinder, and the piston rod of the hydraulic cylinder pulls the pull rod 6 to move away from the gear to be ground, and the outer cone spring chuck 2 connected to the pull rod 6 also moves away from the gear to be ground, so that the outer cone spring chuck 2 clamps the workpiece mandrel 9;

[0068] Step 3, replace the gear to be ground: use the grinding wheel to grind the gear to be ground. After grinding, the piston rod of the hydraulic cylinder extends to drive the pull rod 6 to move toward the direction of the gear to be ground, and the outer cone spring chuck 2 connected to the pull rod 6 also moves toward the direction of the gear to be ground, so that the outer cone spring chuck 2 loosens the workpiece core shaft 9; replace the ground gear and replace it with the next gear to be ground, repeat step 2, and continue to process the gear to be ground until all the gears to be ground are completed.

[0069] like Figure 1 As shown, in this embodiment, a cover plate 4 is provided on the end surface of the inner cone support 1 away from the workpiece spindle, and the cover plate 4 is connected to the inner cone support 1 through a third connecting member.

[0070] In actual use, the main function of setting the cover plate 4 is to protect against oil pollution. In order to prevent the conical surfaces of the outer conical spring chuck 2 and the top 5 from being contaminated by oil pollution, the cover plate 4 is connected through the third connecting piece to protect against oil mist.

[0071] like Figure 1 As shown, in this embodiment, a tapered flange 3 is sleeved between the tip 5 and the workpiece spindle, the axis of the tapered flange 3 coincides with the axis of the workpiece core shaft 9, and the pull rod 6 passes through the tapered flange 3 horizontally.

[0072] like Figure 1 As shown, in this embodiment, the transition connection assembly includes a transition plate 8 coaxially sleeved on the outer conical spring chuck 2 and matched with the outer conical spring chuck 2, and a plurality of fourth connecting members all horizontally arranged and used to connect the pull rod 6 and the transition plate 8, the transition plate 8 is sleeved on the outside of the outer conical spring chuck 2, and the outer conical spring chuck 2 and the transition plate 8 are connected by threads; a through hole for installing the fourth connecting member is opened on the transition plate 8; the fourth connecting member horizontally passes through the pull rod 6 and the top 5 in turn and then extends to the through hole of the transition plate 8, a guide sleeve 7 is arranged in the top 5, and the guide sleeve 7 is horizontally arranged between the transition plate 8 and the pull rod 6.

[0073] like Figure 1 As shown, when the fourth connecting member passes through the top 5 , it passes through the guide sleeve 7 installed in the top 5 and then extends into the through hole of the transition plate 8 .

[0074] like Figure 2 and Figure 3 As shown, in this embodiment, the tip 5 includes a tip portion 5-1 horizontally arranged and matched with the workpiece core shaft 9, a mounting portion 5-2 arranged at the end of the tip portion 5-1, and a mounting ring 5-3 coaxially sleeved on the outside of the mounting portion 5-2. The center axis of the tip portion 5-1, the center axis of the mounting portion 5-2, and the center axis of the mounting ring 5-3 all coincide with the center axis of the workpiece core shaft 9, and the tip portion 5-1, the mounting portion 5-2, and the mounting ring 5-3 are integrally formed.

[0075] like Figure 2 and Figure 3 As shown, in this embodiment, the end of the top portion 5-1 away from the mounting portion 5-2 is a conical structure, and the conical structure cooperates with the top hole on the workpiece core shaft 9;

[0076] The mounting portion 5-2 is provided with a plurality of first mounting holes 5-4 for mounting the guide sleeve 7, and the plurality of first mounting holes 5-4 are evenly arranged along the circumferential direction of the mounting portion 5-2; the mounting portion 5-2 is provided with an insertion groove 5-5 on a side away from the top portion 5-1, and the center line of the insertion groove 5-5 coincides with the center axis of the mounting portion 5-2;

[0077] The mounting ring 5-3 is provided with a plurality of second mounting holes 5-6 for mounting the fifth connecting member, and the mounting ring 5-3 is also provided with a plurality of third mounting holes 5-7 for mounting the sixth connecting member, the second mounting holes 5-6 and the third mounting holes 5-7 are evenly arranged along the circumferential direction of the mounting ring 5-3, and the second mounting holes 5-6 and the third mounting holes 5-7 are staggered; the fifth connecting member and the sixth connecting member are horizontally arranged between the top 5 and the end face of the workpiece spindle, and the fifth connecting member and the sixth connecting member constitute the auxiliary connecting component.

[0078] In actual use, the main function of the insertion slot 5-5 is to install the connecting rod segment 6-1; Figure 2 and Figure 3 As shown, a groove is opened on the mounting ring 5-3, the second mounting hole 5-6 is opened in the groove, the fifth connecting member is arranged in the second mounting hole 5-6; the sixth connecting member is arranged in the third mounting hole 5-7; the top 5 is connected to the end face of the workpiece spindle through the fifth connecting member and the sixth connecting member, and the precision requirement can be achieved by adjusting the locking force of the fifth connecting member and the sixth connecting member.

[0079] like Figure 1 As shown, in this embodiment, the pull rod 6 includes a horizontally arranged connecting rod segment 6-1, and a fixed rod segment 6-2 sleeved on the connecting rod segment 6-1 and used to be connected to the outer cone spring chuck 2, and the connecting rod segment 6-1 and the fixed rod segment 6-2 are integrally formed; the connecting rod segment 6-1 passes through the tapered flange 3 and the mounting ring 5-3 and then extends into the insertion groove 5-5;

[0080] The fixed rod segment 6-2 is provided with a through hole for installing the fourth connecting member, and the fixed rod segment 6-2 is arranged in the mounting ring 5-3. The fourth connecting member horizontally passes through the through hole on the fixed rod segment 6-2 and the first mounting hole 5-4 in sequence, and then extends to the through hole on the transition plate 8 to connect the pull rod 6, the top 5 and the transition plate 8.

[0081] In actual use, the main function of the pull rod 6 is to realize the linkage between the hydraulic cylinder and the outer cone spring chuck 2. The pull rod 6 and the outer cone spring chuck 2 are connected as a whole. When the pull rod 6 moves left and right under the drive of the hydraulic cylinder, the outer cone spring chuck 2 connected thereto also moves left and right at the same time, providing a basis for automatic loading and unloading of the gear to be ground.

[0082] like Figure 4 and Figure 5 As shown, in this embodiment, the inner cone support 1 includes a connecting portion 1-1 coaxially arranged with the top portion 5-1 and cooperating with the mounting ring 5-3, and a sleeve portion 1-2 horizontally arranged on one side of the connecting portion 1-1, the sleeve portion 1-2 is arranged on the side of the connecting portion 1-1 away from the pull rod 6, an auxiliary connecting portion 1-5 is arranged between the connecting portion 1-1 and the sleeve portion 1-2, and the connecting portion 1-1, the sleeve portion 1-2 and the auxiliary connecting portion 1-5 are integrally formed.

[0083] like Figure 4 and Figure 5 As shown, in this embodiment, a first insertion hole 1-3 for the top 5 to pass through is opened in the middle of the connecting portion 1-1; a plurality of second insertion holes 1-6 for the first connecting member to be installed are opened on the connecting portion 1-1, and the plurality of second insertion holes 1-6 are evenly arranged along the circumferential direction of the connecting portion 1-1, and the second insertion holes 1-6 are arranged on the side of the connecting portion 1-1 away from the pull rod 6;

[0084] The auxiliary connecting part 1-5 is a truncated cone structure, and a third insertion hole 1-7 for installing the tip 5 and the outer cone spring chuck 2 is provided in the middle of the auxiliary connecting part 1-5;

[0085] A fourth insertion hole 1-4 for installing the tip 5 and the outer cone spring chuck 2 is provided in the middle of the sleeve portion 1-2, the center line of the first insertion hole 1-3, the center line of the third insertion hole 1-7 and the center line of the fourth insertion hole 1-4 coincide with each other, and the first insertion hole 1-3, the third insertion hole 1-7 and the fourth insertion hole 1-4 are connected; a fifth insertion hole 1-8 for installing the third connecting piece is provided on the end surface of the sleeve portion 1-2 away from the connecting portion 1-1, and the plurality of fifth insertion holes 1-8 are evenly arranged along the circumferential direction of the sleeve portion 1-2; a plurality of sixth insertion holes 1-9 for installing the second connecting piece are also provided on the sleeve portion 1-2, and the center line of the sixth insertion hole 1-9 is perpendicular to the central axis of the sleeve portion 1-2.

[0086] like Figure 4 and Figure 5As shown, a groove is provided at the connection between the connecting portion 1-1 and the auxiliary connecting portion 1-5, and the second insertion hole 1-6 is arranged in the groove; a plurality of grooves matching the grooves on the mounting ring 5-3 are provided on one side of the connecting portion 1-1 close to the pull rod 6. The plurality of sixth insertion holes 1-9 are evenly arranged along the circumferential direction of the sleeve portion 1-2.

[0087] like Figure 6 , Figure 7 and Figure 8 As shown, in this embodiment, the outer cone spring chuck 2 includes a matching portion 2-1, a transition portion 2-2, a positioning portion 2-3, and an enlarged portion 2-4 which are sequentially arranged in a direction away from the pull rod 6, the matching portion 2-1 and the top portion 5-1 are coaxially arranged, the transition plate 8 is sleeved on the matching portion 2-1, and the matching portion 2-1 is threadedly connected to the transition plate 8, and a first positioning hole 2-5 for the top 5 to pass through is opened in the middle of the matching portion 2-1;

[0088] The transition portion 2-2 is coaxially arranged with the top portion 5-1, and a second positioning hole 2-6 for the top portion 5 to pass through is opened in the middle of the transition portion 2-2;

[0089] A third positioning hole 2-8 is provided in the middle of the positioning portion 2-3 for the top 5 to pass through, and a plurality of fourth positioning holes 2-9 are provided on the positioning portion 2-3 to cooperate with the sixth insertion hole 1-9, and the center line of the fourth positioning hole 2-9 is perpendicular to the center axis of the positioning portion 2-3, and the plurality of fourth positioning holes 2-9 are evenly arranged along the circumferential direction of the positioning portion 2-3;

[0090] The enlarged portion 2-4 is a truncated cone-shaped structure, and a fifth positioning hole 2-10 for the top 5 to pass through is opened in the middle of the enlarged portion 2-4;

[0091] The center line of the first positioning hole 2-5, the center line of the second positioning hole 2-6, the center line of the third positioning hole 2-8, and the center line of the fifth positioning hole 2-10 coincide with each other, and the first positioning hole 2-5, the second positioning hole 2-6, the third positioning hole 2-8, and the fifth positioning hole 2-10 are connected.

[0092] like Figure 6 , Figure 7 and Figure 8 As shown, a plurality of arc-shaped grooves 2-7 are provided on the outer surface of the transition portion 2-2, and the plurality of arc-shaped grooves 2-7 are evenly arranged along the circumferential direction of the transition portion 2-2.

[0093] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent structural change made to the above embodiment based on the technical essence of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. An automatic workpiece clamping device for a gear grinding machine, characterized in that: It comprises a top mechanism arranged horizontally and connected to a workpiece spindle, an inner cone support (1) connected to the top mechanism and arranged on the end of the top mechanism away from the workpiece spindle, and an outer cone spring chuck (2) arranged in the inner cone support (1) and cooperating with the top mechanism; The top mechanism is connected to the end face of the workpiece spindle via an auxiliary connection component, the top mechanism is connected to the inner cone support (1) via a first connection component, the top mechanism is connected to the outer cone spring chuck (2) via a transition connection component, and the inner cone support (1) is connected to the outer cone spring chuck (2) via a second connection component; The centering mechanism comprises a centering point (5) arranged horizontally and a pull rod (6) connected to the centering point (5) and used to drive the outer cone spring chuck (2) to move, the pull rod (6) being arranged horizontally at one end of the centering point (5) away from the outer cone spring chuck (2), and the center axis of the centering point (5), the center axis of the pull rod (6) and the center axis of the workpiece core shaft (9) are coincident; The pull rod (6) and the outer cone spring chuck (2) are connected as a whole via a transition connection assembly; the center (5) is connected to the end surface of the workpiece spindle via the auxiliary connection assembly, and the inner cone support (1) is connected to the center (5) via the first connection member; the end of the pull rod (6) away from the center (5) is connected to a hydraulic cylinder; the outer cone spring chuck (2) is coaxially sleeved between the center (5) and the inner cone support (1); The transition connection assembly comprises a transition plate (8) coaxially sleeved on the outer conical spring chuck (2) and matched with the outer conical spring chuck (2), and a plurality of fourth connecting members all arranged horizontally and used to connect the pull rod (6) and the transition plate (8), the transition plate (8) being sleeved on the outer side of the outer conical spring chuck (2), the outer conical spring chuck (2) and the transition plate (8) being connected by threads; a through hole for installing the fourth connecting member is provided on the transition plate (8); the fourth connecting member horizontally passes through the pull rod (6) and the top (5) in sequence and then extends into the through hole of the transition plate (8), the top (5) is provided with a guide sleeve (7), and the guide sleeve (7) is arranged horizontally between the transition plate (8) and the pull rod (6); The inner cone support (1) comprises a connecting portion (1-1) coaxially arranged with the top portion (5-1) and cooperating with the mounting ring (5-3), and a sleeve portion (1-2) horizontally arranged on one side of the connecting portion (1-1), the sleeve portion (1-2) being arranged on a side of the connecting portion (1-1) away from the pull rod (6), an auxiliary connecting portion (1-5) being arranged between the connecting portion (1-1) and the sleeve portion (1-2), and the connecting portion (1-1), the sleeve portion (1-2) and the auxiliary connecting portion (1-5) being integrally formed; A first insertion hole (1-3) for the tip (5) to pass through is provided in the middle of the connecting portion (1-1); a plurality of second insertion holes (1-6) for the first connecting member to be installed are provided on the connecting portion (1-1), the plurality of second insertion holes (1-6) being evenly arranged along the circumferential direction of the connecting portion (1-1), and the second insertion holes (1-6) being arranged on a side of the connecting portion (1-1) away from the pull rod (6); The auxiliary connecting portion (1-5) is a truncated cone-shaped structure, and a third insertion hole (1-7) for installing the tip (5) and the outer cone spring chuck (2) is provided in the middle of the auxiliary connecting portion (1-5); A fourth insertion hole (1-4) for mounting the tip (5) and the outer cone spring chuck (2) is provided in the middle of the sleeve portion (1-2), the center line of the first insertion hole (1-3), the center line of the third insertion hole (1-7) and the center line of the fourth insertion hole (1-4) coincide with each other, and the first insertion hole (1-3), the third insertion hole (1-7) and the fourth insertion hole (1-4) are connected; a fifth insertion hole (1-8) for mounting a third connecting member is provided on the end surface of the sleeve portion (1-2) away from the connecting portion (1-1), and the plurality of the fifth insertion holes (1-8) are evenly arranged along the circumferential direction of the sleeve portion (1-2); a plurality of sixth insertion holes (1-9) for mounting the second connecting member are also provided on the sleeve portion (1-2), and the center line of the sixth insertion hole (1-9) is perpendicular to the central axis of the sleeve portion (1-2); The outer cone spring chuck (2) comprises a matching portion (2-1), a transition portion (2-2), a positioning portion (2-3), and an enlarged portion (2-4) which are arranged in sequence in a direction away from the pull rod (6); the matching portion (2-1) and the top portion (5-1) are arranged coaxially; the transition plate (8) is sleeved on the matching portion (2-1), and the matching portion (2-1) and the transition plate (8) are threadedly connected; a first positioning hole (2-5) for the top portion (5) to pass through is opened in the middle of the matching portion (2-1); The transition portion (2-2) is coaxially arranged with the top portion (5-1), and a second positioning hole (2-6) for the top portion (5) to pass through is provided in the middle of the transition portion (2-2); A third positioning hole (2-8) is provided in the middle of the positioning portion (2-3) for the tip (5) to pass through, a plurality of fourth positioning holes (2-9) are provided on the positioning portion (2-3) to match the sixth insertion hole (1-9), a center line of the fourth positioning hole (2-9) is perpendicular to the center axis of the positioning portion (2-3), and the plurality of fourth positioning holes (2-9) are evenly arranged along the circumferential direction of the positioning portion (2-3); The enlarged portion (2-4) is a truncated cone-shaped structure, and a fifth positioning hole (2-10) for the tip (5) to pass through is provided in the middle of the enlarged portion (2-4); The center line of the first positioning hole (2-5), the center line of the second positioning hole (2-6), the center line of the third positioning hole (2-8), and the center line of the fifth positioning hole (2-10) coincide with each other, and the first positioning hole (2-5), the second positioning hole (2-6), the third positioning hole (2-8), and the fifth positioning hole (2-10) are connected.

2. The automatic workpiece clamping device for a gear grinding machine according to claim 1, characterized in that: A cover plate (4) is provided on the end surface of the inner cone support (1) away from the workpiece spindle, and the cover plate (4) is connected to the inner cone support (1) via a third connecting member.

3. The automatic workpiece clamping device for a gear grinding machine according to claim 1, characterized in that: A tapered flange (3) is sleeved between the center (5) and the workpiece spindle, the axis of the tapered flange (3) coincides with the axis of the workpiece spindle (9), and the pull rod (6) passes through the tapered flange (3) horizontally.

4. The automatic workpiece clamping device for a gear grinding machine according to claim 1, characterized in that: The tip (5) comprises a tip portion (5-1) arranged horizontally and cooperating with a workpiece core shaft (9), a mounting portion (5-2) arranged at the end of the tip portion (5-1), and a mounting ring (5-3) coaxially sleeved on the outside of the mounting portion (5-2); the center axis of the tip portion (5-1), the center axis of the mounting portion (5-2), and the center axis of the mounting ring (5-3) all coincide with the center axis of the workpiece core shaft (9); and the tip portion (5-1), the mounting portion (5-2), and the mounting ring (5-3) are integrally formed.

5. The automatic workpiece clamping device for a gear grinding machine according to claim 4, characterized in that: The end of the top portion (5-1) away from the mounting portion (5-2) is a conical structure, and the conical structure cooperates with the top hole on the workpiece core shaft (9); The mounting portion (5-2) is provided with a plurality of first mounting holes (5-4) for mounting the guide sleeve (7), and the plurality of first mounting holes (5-4) are evenly arranged along the circumferential direction of the mounting portion (5-2); a plug-in slot (5-5) is provided on a side of the mounting portion (5-2) away from the top portion (5-1), and a center line of the plug-in slot (5-5) coincides with a center axis of the mounting portion (5-2); The mounting ring (5-3) is provided with a plurality of second mounting holes (5-6) for mounting a fifth connecting member, and the mounting ring (5-3) is also provided with a plurality of third mounting holes (5-7) for mounting a sixth connecting member, the second mounting holes (5-6) and the third mounting holes (5-7) are evenly arranged along the circumferential direction of the mounting ring (5-3), and the second mounting holes (5-6) and the third mounting holes (5-7) are staggered; the fifth connecting member and the sixth connecting member are both horizontally arranged between the top (5) and the end surface of the workpiece spindle, and the fifth connecting member and the sixth connecting member constitute the auxiliary connecting component.

6. The automatic workpiece clamping device for a gear grinding machine according to claim 3, characterized in that: The pull rod (6) comprises a horizontally arranged connecting rod segment (6-1), and a fixed rod segment (6-2) sleeved on the connecting rod segment (6-1) and used to be connected to the outer cone spring chuck (2), wherein the connecting rod segment (6-1) and the fixed rod segment (6-2) are integrally formed; the connecting rod segment (6-1) passes through the tapered flange (3) and the mounting ring (5-3) and then extends into the insertion slot (5-5); The fixed rod segment (6-2) is provided with a through hole for installing the fourth connecting member. The fixed rod segment (6-2) is arranged in the mounting ring (5-3). The fourth connecting member horizontally passes through the through hole on the fixed rod segment (6-2) and the first mounting hole (5-4) in sequence and then extends into the through hole on the transition plate (8) to connect the pull rod (6), the top end (5) and the transition plate (8).

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