Rotary clamping self-centering tool

Abstract

The invention discloses a rotary clamping self-centering tool. The tool comprises a base and two containing holes, wherein the base comprises a large opening end and a small opening end, and the side wall of the base is provided with the two containing holes; a protruding spigot step is arranged on one side of the chuck and arranged in the small opening end of the base, and a clamping claw is arranged on the other side of the chuck and used for clamping a tool. The outer side face of the positioning disc is a conical face, and the positioning disc is installed from the large opening end of the base and connected with the chuck. The adjusting ring comprises a ring body and connecting blocks, the ring body is arranged on the outer side of the positioning disc in a sleeving mode, the top face of the ring body makes contact with the inner end face of the small opening end of the base, the inner side face of the ring body is a conical face and makes contact with the conical face of the positioning disc, and the two connecting blocks correspond to the two containing holes of the base respectively; one end of the first adjusting lead screw penetrates through one containing hole to be in threaded connection with the corresponding connecting block, and the other end of the first adjusting lead screw is in threaded connection with an adjusting head. One end of the second adjusting lead screw penetrates through the other containing hole to be in threaded connection with the corresponding connecting block, and the other end of the second adjusting lead screw is in threaded connection with an adjusting head. And rapid clamping and rotating of the workpiece are achieved.

Description

Technical Field

[0001] The invention relates to the field of mechanical processing, and in particular to a rotary clamping self-centering tool. Background Art

[0002] In daily production and processing, after the processing content in one direction of the processed parts is completed, the workpiece needs to be rotated to complete the processing content in other directions. In particular, cylindrical parts also involve the requirement that the central axis cannot change after rotation, that is, they must rotate around the central axis of the cylinder.

[0003] In the prior art, the workpiece is often placed on an ordinary three-jaw chuck for rotation processing, but this method cannot achieve the purposes of rapid rotation, automatic centering and positioning after rotation.

[0004] There is no effective solution to the above problems in the prior art. Summary of the invention

[0005] In order to solve the above problems, the present invention provides a rotary clamping self-centering tool, which realizes the clamping and automatic centering of workpieces of different sizes through a rotatable chuck, and completes the clamping and automatic centering of workpieces by rotating the chuck; and controls the adjusting screw to drive the two connecting blocks on the adjusting ring to move toward or away from each other at the same time, thereby completing the tightening or loosening of the chuck, thereby solving the problem that the prior art cannot achieve rapid rotation, automatic centering and positioning after rotation.

[0006] To achieve the above-mentioned purpose, the present invention provides a rotary clamping self-centering tool, comprising: a base, the base comprising a large opening end and a small opening end, and the side wall is provided with two opposite accommodating holes; a chuck, one side of the chuck is provided with a protruding stop step, the stop step is arranged in the small opening end of the base, and the other side is provided with a clamping claw for clamping the tool; a positioning plate, the outer side surface of the positioning plate is a conical surface, the positioning plate is installed from the large opening end of the base and connected to the chuck; an adjusting ring, the adjusting ring comprises a ring body with an opening on one side and two sides of the opening The two connecting blocks extend outward respectively, the ring body is sleeved on the outside of the positioning plate, the top surface contacts the inner end surface of the small opening end of the base, the inner side surface of the ring body is a conical surface and contacts the conical surface of the positioning plate, the two connecting blocks are respectively arranged corresponding to the two accommodating holes of the base, and the two connecting blocks are both provided with threaded holes; one end of the first adjusting screw passes through an accommodating hole and is threadedly connected to the corresponding connecting block, and the other end is threadedly connected to an adjusting head; one end of the second adjusting screw passes through the other accommodating hole and is threadedly connected to the corresponding connecting block, and the other end is threadedly connected to an adjusting head.

[0007] Further optionally, the top surface of the base is provided with a circle of equally divided angle marks along the circumferential direction; the outer side surface of the chuck is provided with an indicator line for aligning with the angle marks to indicate the rotation angle.

[0008] Further optionally, the bottom surface of the chuck is provided with a plurality of first fixing holes; the positioning plate is provided with a plurality of second fixing holes, and the plurality of second fixing holes are arranged one-to-one corresponding to the plurality of first fixing holes; one end of the fixing member passes through the second fixing hole and is connected to the corresponding first fixing hole.

[0009] Further optionally, the external threads of the first adjusting screw and the second adjusting screw are both trapezoidal threads.

[0010] Further optionally, the threaded holes of the two connecting blocks are left-handed trapezoidal threads and right-handed trapezoidal threads respectively.

[0011] Further optionally, an opening is provided in the middle of the chuck; a through hole is provided in the middle of the positioning plate, a positioning ring extends from the edge of the through hole, the positioning ring can be inserted into the opening of the chuck, and the outer side surface of the positioning ring contacts the inner side surface of the opening of the chuck.

[0012] Further optionally, the chuck includes three clamping jaws.

[0013] Further optionally, the outer end surface of the adjusting head is provided with a hexagonal countersunk hole.

[0014] Further optionally, the accommodating hole is a countersunk hole near the outer side surface of the base for accommodating the adjusting head.

[0015] The above technical scheme has the following beneficial effects: it can realize rapid clamping and automatic centering of cylindrical workpieces; it can realize rotation and positioning of clamped workpieces at any angle around the axis; it can realize rapid tightening, rapid rotation and rapid loosening of workpieces, reducing clamping and alignment time; it has a simple structure, is easy to manufacture and has strong universality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the rotary clamping self-centering tooling provided by an embodiment of the present invention;

[0018] Figure 2 is a schematic diagram of the three-dimensional structure of the rotary clamping self-centering tooling provided by an embodiment of the present invention from another perspective;

[0019] Figure 3 is a schematic structural diagram of a base provided by an embodiment of the present invention;

[0020] Figure 4 is a schematic structural diagram of a chuck provided by an embodiment of the present invention;

[0021] Figure 5 is a structural schematic diagram of a chuck provided by an embodiment of the present invention from another perspective;

[0022] Figure 6 is a schematic structural diagram of a positioning plate provided in an embodiment of the present invention;

[0023] Figure 7 is a schematic structural diagram of an adjustment ring provided by an embodiment of the present invention;

[0024] Figure 8 It is a partial assembly schematic diagram provided by an embodiment of the present invention;

[0025] Fig. 9 is a schematic cross-sectional structure diagram of a rotary clamping self-centering tooling provided by an embodiment of the present invention;

[0026] Fig.10 It is a schematic diagram of the top view of the structure of the rotary clamping self-centering tool provided by an embodiment of the present invention;

[0027] Fig.11 It is a schematic diagram of the side structure of the rotary clamping self-centering tooling provided in an embodiment of the present invention.

[0028] Figure markings: 1-base; 101-accommodating hole; 102-angle mark; 2-chuck; 201-clamping claw; 202-stop step; 203-first fixing hole; 204-indicator line; 3-positioning plate; 301-second fixing hole; 302-positioning ring; 4-adjusting ring; 401-ring body; 402-connecting block; 403-threaded hole; 5-first adjusting screw; 6-second adjusting screw; 7-adjusting head; 8-fixing piece. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] In order to solve the problem that the workpiece cannot be quickly rotated, clamped and self-centered in the prior art, an embodiment of the present invention provides a rotating clamping self-centering tool, including: a base 1, the base 1 includes a large opening end and a small opening end, and the side wall is provided with two opposite accommodating holes 101; a chuck 2, one side of the chuck 2 is provided with a protruding stop step 202, the stop step 202 is arranged in the small opening end of the base 1, and the other side is provided with a clamping claw 201 for clamping the tool; a positioning plate 3, the outer side surface of the positioning plate 3 is a conical surface, the positioning plate 3 is installed from the large opening end of the base 1, and is connected to the chuck 2; an adjusting ring 4, the adjusting ring 4 includes a ring body 401 with an opening on one side and two sides of the opening The connecting blocks 402 extend outward respectively, and the ring body 401 is sleeved on the outside of the positioning plate 3, and the top surface contacts the inner end surface of the small opening end of the base 1. The inner side surface of the ring body 401 is a conical surface and contacts the conical surface of the positioning plate 3. The two connecting blocks 402 are respectively arranged corresponding to the two accommodating holes 101 of the base 1, and the two connecting blocks 402 are both provided with threaded holes 403; one end of the first adjusting screw 5 passes through one accommodating hole 101 and is threadedly connected to the corresponding connecting block 402, and the other end is threadedly connected to the adjusting head 7; one end of the second adjusting screw 6 passes through the other accommodating hole 101 and is threadedly connected to the corresponding connecting block 402, and the other end is threadedly connected to the adjusting head 7.

[0031] Figure 1 3D schematic diagram of the rotary clamping self-centering tooling provided by an embodiment of the present invention. Figure 1 As shown, the diameter of the base 1 in the tooling is larger than the diameter of the chuck 2 , and a portion of the chuck 2 is disposed in the base 1 , while another portion protrudes from the surface of the base 1 . Figure 2 3D structural diagram of the rotary clamping self-centering tooling provided by the embodiment of the present invention from another perspective, as shown in FIG. Figure 2 As shown, the tooling also includes a positioning plate 3, an adjusting ring 4, a first adjusting screw 5, a second adjusting screw 6 and an adjusting head 7.

[0032] Figure 3 is a schematic diagram of the structure of the base provided by an embodiment of the present invention, such as Figure 3 As shown, both ends of the base 1 are open, and the opening diameter of one end is larger than the opening diameter of the other end, that is, the base 1 includes a large opening end and a small opening end, and two accommodating holes 101 are provided on the outer surface of the base 1.

[0033] Figure 4 is a schematic diagram of the structure of a chuck provided by an embodiment of the present invention, Figure 5 is a schematic structural diagram of a chuck from another perspective provided by an embodiment of the present invention, such as Figure 4 , Figure 5As shown, a protruding stop step 202 is provided on one end face of the chuck 2, and the diameter of the stop step 202 is smaller than the diameter of the chuck 2 body and also smaller than the diameter of the small port of the base 1, so as to ensure that the stop step 202 can enter the small port of the base 1, thereby realizing the rotation of the chuck 2 relative to the base 1. A clamping claw 201 is provided on the other end face of the chuck 2, and the clamping claw 201 is set to a step shape of multiple sizes, so as to realize the clamping of workpieces of different sizes.

[0034] Figure 6 is a schematic diagram of the structure of the positioning plate provided in an embodiment of the present invention, such as Figure 6 As shown, the outer side surface of the positioning disk 3 is a conical surface, and the maximum diameter of the positioning disk 3 is smaller than the diameter of the large port of the base 1, so that the positioning disk 3 can be installed from the large port of the base 1.

[0035] Figure 7 is a schematic diagram of the structure of the adjustment ring provided by an embodiment of the present invention, such as Figure 7 As shown, the adjusting ring 4 includes an open ring body 401 and a connecting block 402. There are two connecting blocks 402, which are respectively arranged on both sides of the opening, and each connecting block 402 is provided with a threaded hole 403. The inner side surface of the ring body 401 is a conical surface, which is adapted to the outer conical surface of the positioning plate 3.

[0036] Figure 8 Schematic diagram of a partial assembly provided by an embodiment of the present invention, such as Figure 8 As shown, the inner conical surface of the adjusting ring 4 cooperates with the outer conical surface of the positioning plate 3 so that the adjusting ring 4 is sleeved on the outside of the positioning plate 3, the first adjusting screw 5 is threadedly connected to one of the connecting blocks 402, the second adjusting screw 6 is threadedly connected to the other connecting block 402, and the first adjusting screw 5 and the second adjusting screw 6 are both connected to an adjusting block. When the adjusting block is controlled and the screw is rotated, the two connecting blocks 402 can move toward or away from each other.

[0037] Fig. 9 is a schematic cross-sectional structure diagram of a rotary clamping self-centering tooling provided by an embodiment of the present invention, such as Fig. 9 As shown, the stop step 202 of the chuck 2 is installed in the small port of the base 1 and can rotate in the small port of the base 1. The positioning plate 3 enters from the large port end of the base 1 and is fixedly connected to the chuck 2. The top surface of the adjustment ring 4 contacts the inner end surface of the small port of the base 1, and the adjustment ring 4 is sleeved on the outside of the positioning plate 3, and its inner conical surface contacts the outer conical surface of the positioning plate 3. Along the axis direction of the tooling, the adjustment ring 4 is sandwiched between the base 1 and the positioning plate 3.

[0038] The first adjusting screw 5 passes through the receiving hole 101 on one side and is connected to the threaded hole 403 of one connecting block 402, and the second adjusting screw 6 passes through the receiving hole 101 on the other side and is connected to the threaded hole 403 of another connecting block 402. The first adjusting screw 5 and the second adjusting screw 6 are both connected to an adjusting head 7.

[0039] When the workpiece needs to be fixed, the first adjusting screw 5 and the second adjusting screw 6 are driven to rotate by rotating the adjusting head 7, so that the two connecting blocks 402 of the adjusting ring 4 move toward each other, and the distance between the two connecting blocks 402 will gradually decrease. At this time, the adjusting ring 4 shrinks in the circumferential direction (the diameter decreases), and the inner conical surface of the adjusting ring 4 will produce a downward squeezing force on the positioning disk 3, and at the same time produce an upward squeezing force on the base 1. At this time, the squeezing of the base 1 and the positioning disk 3 by the adjusting ring 4 and the increase of the clamping force between each other make the positioning disk 3 tight, and because the chuck 2 is fixedly connected to the positioning disk 3, the chuck 2 is tightened accordingly, and the workpiece is fixed accordingly.

[0040] When the workpiece needs to rotate, the first adjusting screw 5 and the second adjusting screw 6 are driven to rotate by rotating the adjusting head 7. At this time, the two connecting blocks 402 will move in opposite directions on the screws, the gap between the two connecting blocks 402 will increase, the adjusting ring 4 will expand along the circumferential direction (the diameter will increase), and the squeezing force of the adjusting ring 4 on the positioning disk 3 and the base 1 will also decrease. At this time, after the clamping force between the adjusting ring 4, the base, and the positioning disk 3 gradually disappears, the positioning disk 3 can rotate smoothly, and because the chuck 2 is fixedly connected to the positioning disk 3, the chuck 2 can be controlled to rotate, and the workpiece rotates accordingly.

[0041] As an optional embodiment, the top surface of the base 1 is provided with a circle of equally divided angle marks 102 along the circumferential direction; the outer side surface of the chuck 2 is provided with an indicator line 204 for aligning with the angle marks 102 to indicate the rotation angle.

[0042] Fig.10 It is a schematic diagram of the top view of the structure of the rotary clamping self-centering tool provided by an embodiment of the present invention; Fig.11 is a schematic diagram of the side structure of the rotary clamping self-centering tool provided by an embodiment of the present invention, such as Fig.10 , Fig.11 As shown, the top surface of the base 1 is provided with a circle of equally divided angle scale lines 102 along the circumferential direction, each scale line marks an angle, and the outer side surface of the chuck 2 is provided with an indicator line 204. When the indicator line 204 is aligned with a certain angle scale line 102, it is proved that the workpiece is rotated by the angle corresponding to the angle scale line 102. In this way, the precise rotation angle of the workpiece is controlled.

[0043] As an optional embodiment, the bottom surface of the chuck 2 is provided with multiple first fixing holes 203; the positioning plate 3 is provided with multiple second fixing holes 301, and the multiple second fixing holes 301 are arranged one-to-one corresponding to the multiple first fixing holes 203; one end of the fixing member 8 passes through the second fixing hole 301 and is connected to the corresponding first fixing hole 203.

[0044] like Figure 5 As shown, the bottom surface of the chuck 2 is provided with a plurality of first fixing holes 203, such as Figure 6 As shown, the positioning plate 3 is provided with a plurality of second fixing holes 301, such as Fig. 9 As shown, the fixing member 8 passes through the second fixing hole 301 and is connected with the first fixing hole 203 , so that the positioning plate 3 and the chuck 2 are fixedly connected.

[0045] As an optional implementation, the fixing member 8 is a screw, and the fixing member 8 is threadedly connected to the chuck 2 .

[0046] As an optional implementation, the external threads of the first adjusting screw 5 and the second adjusting screw 6 are both trapezoidal threads.

[0047] As an optional implementation, the threaded holes 403 of the two connection blocks 402 are respectively left-handed trapezoidal threads and right-handed trapezoidal threads.

[0048] The threaded holes 403 of the two connecting blocks 402 are left-handed trapezoidal threads and right-handed trapezoidal threads respectively, so that when the first adjusting screw 5 and the second adjusting screw 6 rotate, the two connecting blocks 402 will move simultaneously on the two adjusting screws and in opposite directions (moving towards each other or away from each other at the same time).

[0049] As an optional embodiment, an opening is provided in the middle of the chuck 2; a through hole is provided in the middle of the positioning disk 3, and a positioning ring 302 extends from the edge of the through hole. The positioning ring 302 can be inserted into the opening of the chuck 2, and the outer side surface of the positioning ring 302 contacts the inner side surface of the opening of the chuck 2.

[0050] like Figure 4 As shown, the middle of the chuck 2 is provided with an opening, such as Figure 6 As shown, a through hole is provided in the middle of the positioning disk 3 , and a positioning ring 302 extends upward from the edge of the through hole. The positioning ring 302 can be inserted into the middle opening of the chuck 2 , so that the positioning ring 302 and the chuck 2 are coaxial.

[0051] As an optional embodiment, the chuck 2 includes three clamping jaws 201 .

[0052] like Figure 4 As shown, three clamping jaws 201 are provided on the end surface of the chuck 2, and the three clamping jaws 201 are evenly distributed on the end surface, thereby improving the clamping stability of the workpiece.

[0053] As an optional implementation, the outer end surface of the adjusting head 7 is provided with a hexagonal countersunk hole.

[0054] The adjusting head 7 is provided with a hexagonal countersunk hole, which is convenient for fixing the tool and rotating the adjusting head 7.

[0055] As an optional implementation, the outer side surface of the base 1 close to the accommodating hole 101 is a countersunk hole for accommodating the adjusting head 7 .

[0056] like Figure 1 As shown, the two accommodating holes can accommodate part of the adjusting head to prevent the adjusting head from protruding too much from the side of the base.

[0057] The installation steps of the above tooling are as follows:

[0058] ① Put the inner conical surface of the adjusting ring on the outer conical surface of the positioning plate so that the two conical surfaces are in contact;

[0059] ② Buckle the large opening of the base onto the top end surface of the adjusting ring;

[0060] ③ Pass the first adjusting screw and the second adjusting screw through the two receiving holes of the base respectively, and then pass through the threaded holes of the two connecting blocks on the adjusting ring respectively through threaded matching, and then the first adjusting screw and the second adjusting screw are fixedly connected;

[0061] ④ Connect the ends of the first adjusting screw and the second adjusting screw close to the outer circle of the base to the adjusting heads respectively;

[0062] ⑤Insert the stop step of the chuck into the small opening end of the base, rotate the chuck so that the second fixing hole of the positioning plate is coaxial with the first fixing hole of the chuck, pass the fixing part through the second fixing hole of the positioning plate and screw it into the first fixing hole of the chuck to fix the two.

[0063] Steps to use the workpiece:

[0064] ①Put the tooling on the machine tool workbench, and use a pressing plate, screw, high-speed iron and other tooling to press the upper end surface of the base to fix the tooling to the machine tool workbench;

[0065] ② Clamp the workpiece through the three clamping claws of the chuck;

[0066] ③ According to the workpiece processing requirements, take the outer circle engraved lines of the chuck and the angle engraved lines of the base as the basis for the rotation angle, and rotate the chuck to a certain angle to the appropriate position;

[0067] ④ The rotating adjusting head drives the first adjusting screw and the second adjusting screw to rotate, so that the two connecting blocks of the adjusting ring move toward each other. At this time, the adjusting ring shrinks inward along the circumference to press the base and the positioning plate to achieve the pressing and fixing of the chuck and the workpiece;

[0068] ⑤ After processing is completed, release the clamping claws of the rotary chuck and put the workpiece down.

[0069] The above technical scheme has the following beneficial effects: it can realize rapid clamping and automatic centering of cylindrical workpieces; it can realize rotation and positioning of clamped workpieces at any angle around the axis; it can realize rapid tightening, rapid rotation and rapid loosening of workpieces, reducing clamping and alignment time; it has a simple structure, is easy to manufacture and has strong universality.

[0070] The specific implementation methods of the above invention further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above content is only the specific implementation methods of the present invention and is not intended to limit the protection scope of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A rotary clamping self-centering tool, characterized in that: include: A base, the base comprising a large opening end and a small opening end, and a side wall having two opposite receiving holes; A chuck, wherein one side of the chuck is provided with a protruding stop step, the stop step is arranged in the small opening end of the base, and the other side is provided with a clamping claw for clamping the tooling; A positioning disk, the outer side surface of which is a conical surface, is inserted into the large opening end of the base and connected to the chuck; An adjusting ring, the adjusting ring comprising a ring body with an opening on one side and connecting blocks extending outwardly on both sides of the opening, the ring body being sleeved on the outside of the positioning plate, the top surface of which is in contact with the inner end surface of the small opening end of the base, the inner side surface of the ring body being a conical surface and in contact with the conical surface of the positioning plate, the two connecting blocks being respectively arranged corresponding to the two accommodating holes of the base, and both connecting blocks being provided with threaded holes; One end of the first adjusting screw passes through a receiving hole and is threadedly connected to the corresponding connecting block, and the other end is threadedly connected to the adjusting head; one end of the second adjusting screw passes through another receiving hole and is threadedly connected to the corresponding connecting block, and the other end is threadedly connected to the adjusting head.

2. The rotary clamping self-centering tool according to claim 1, characterized in that: The top surface of the base is provided with a circle of equally divided angle lines along the circumferential direction; An indicator line is provided on the outer side of the chuck for aligning with the angle mark to indicate the rotation angle.

3. The rotary clamping self-centering tool according to claim 1, characterized in that: The bottom surface of the chuck is provided with a plurality of first fixing holes; The positioning plate is provided with a plurality of second fixing holes, and the plurality of second fixing holes are arranged in one-to-one correspondence with the plurality of first fixing holes; One end of the fixing member passes through the second fixing hole and is connected to the corresponding first fixing hole.

4. The rotary clamping self-centering tool according to claim 1, characterized in that: The external threads of the first adjusting screw and the second adjusting screw are both trapezoidal threads.

5. The rotary clamping self-centering tool according to claim 4, characterized in that: The threaded holes of the two connecting blocks are respectively left-hand trapezoidal threads and right-hand trapezoidal threads.

6. The rotary clamping self-centering tool according to claim 1, characterized in that: An opening is provided in the middle of the chuck; A through hole is provided in the middle of the positioning disk, a positioning ring extends from the edge of the through hole, the positioning ring can be inserted into the opening of the chuck, and the outer side of the positioning ring contacts the inner side of the opening of the chuck.

7. The rotary clamping self-centering tool according to claim 1, characterized in that: The chuck includes three clamping jaws.

8. The rotary clamping self-centering tool according to claim 1, characterized in that: The outer end surface of the adjusting head is provided with an inner hexagonal countersunk hole.

9. The rotary clamping self-centering tool according to claim 1, characterized in that: The receiving hole is a recessed hole near the outer side surface of the base, which is used to receive the adjusting head.

Images