A follow-up clamp

Abstract

The utility model discloses a follow-up clamp, which is used to fix a workpiece that needs to be polished, and includes: a base, the base includes a positioning column and a positioning hole, the positioning column is arranged in the positioning hole, and the positioning column is used to position the workpiece; a clamping jaw assembly, the clamping jaw assembly is connected to the base, the clamping jaw assembly includes a driving member and a clamping jaw connected to the driving member, the driving member is used to drive the clamping jaw to move toward or away from the positioned workpiece, so as to clamp or release the outer edge of the workpiece through the clamping jaw; a control assembly, the control assembly is connected to the driving member for communication, and is used to control the driving member to drive the clamping jaw approached by the tool to move away from the workpiece when a tool for polishing the workpiece approaches any clamping jaw. The follow-up clamp drives the clamping jaw by controlling the driving member, thereby providing an avoidance space for the polishing tool, so that the polishing process of the polishing tool is complete.

Description

Technical Field

[0001] The utility model relates to the technical field of grinding and polishing fixtures, in particular to a follow-up fixture. Background Art

[0002] In today's manufacturing industry, people have higher and higher requirements for the appearance of products. This means that all products need to be polished, especially the workpiece, which is the part of the product that is directly touched and displayed. The usual polishing process is to fix the workpiece on the polishing fixture, complete the positioning and clamping operations, and then start the polishing tool to polish the workpiece.

[0003] Because some areas on the workpiece are clamped tightly with the fixture, the grinding tool cannot grind this part due to the obstruction of the fixture. Therefore, after the grinding tool completes the first grinding, the workpiece that has completed the first grinding needs to be clamped for the second time, so that the fixture is clamped on the surface of the workpiece that has been polished, so that the grinding tool can grind the unpolished part of the workpiece during the second grinding. This grinding method requires secondary clamping, which seriously affects production efficiency. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide a follow-up clamp capable of completing the grinding of the entire workpiece in one clamping.

[0005] The utility model provides a follow-up clamp for fixing a workpiece to be polished, comprising:

[0006] A base, the base comprising a positioning column and a positioning hole, the positioning column is arranged in the positioning hole, and the positioning column is used to position the workpiece;

[0007] A plurality of clamping jaw assemblies, each of which is connected to the base, and the clamping jaw assemblies include a driving member and a clamping jaw drivingly connected to the driving member, wherein the driving member is used to drive the clamping jaw to move toward or away from the positioned workpiece, so as to clamp or release the outer edge of the workpiece through the clamping jaw;

[0008] A control component is communicatively connected with the driving member, and is used to control the driving member to drive the clamping jaw approached by the tool away from the workpiece when a tool for grinding the workpiece approaches any of the clamping jaws.

[0009] In one embodiment, there are a plurality of positioning holes, and the clamping jaw assemblies include at least three. At least three clamping jaw assemblies are installed in a plurality of different positioning holes to form different clamping ranges.

[0010] In one embodiment, the clamp assembly further includes a connecting rod and a transmission rod, wherein both ends of the connecting rod are respectively hinged to the driving member and the transmission rod, and one end of the transmission rod away from the connecting rod is hinged to the clamp, and the driving member is used to drive the connecting rod to move axially along the positioning hole, thereby driving the transmission rod to move through the connecting rod, and the transmission rod is used to drive the clamp to move toward or away from the positioned workpiece.

[0011] In one embodiment, the clamping jaw assembly further comprises a slide groove, which is arranged at an end of the transmission rod away from the driving member along the axial direction of the positioning hole, and the clamping jaw is relatively slidably connected to the slide groove, and the clamping jaw moves toward or away from the positioned workpiece along the slide groove.

[0012] In one embodiment, the transmission rod includes a first section arm and a second section arm that are bent and connected to each other, the first section arm is hinged to the connecting rod, and the second section arm is hinged to the clamping claw. When the connecting rod drives the first section arm to move along the axial direction of the positioning hole toward the sliding groove, the second section arm drives the clamping claw to abut against the sliding groove and move along the sliding groove in a direction away from the workpiece.

[0013] In one embodiment, the second arm section further comprises a connection hole for hinged connection with the clamping jaw, and the length of the connection hole is greater than the diameter of the pin shaft for hinged connection with the clamping jaw.

[0014] In one embodiment, the first section arm is hinged to the connecting rod at a first end, the second section arm is hinged to the clamping claw at a second end, and the distance between the first end and the second end is greater than the length of the slide slot.

[0015] In one embodiment, the clamping jaw includes a sliding portion and a clamping portion that are connected to each other, the sliding portion and the slide groove are relatively slidably connected, and the transmission rod is connected to the sliding portion for driving the sliding portion to slide along the slide groove, thereby driving the clamping portion to move toward or away from the positioned workpiece through the sliding portion.

[0016] In one embodiment, the clamping jaw further includes a buffer pad, which is connected to a side of the clamping portion facing the workpiece and is used to buffer the pressing force of the clamping portion on the workpiece.

[0017] In one embodiment, the driving member includes a cylinder connected to the connecting rod, and the cylinder is used to drive the connecting rod to move along the axial direction of the positioning hole.

[0018] In the follow-up clamp provided by the embodiment of the utility model, the workpiece is initially positioned by the base, and then the driving member drives the clamping jaw to move toward the workpiece until the clamping jaw abuts against the workpiece, thereby clamping the workpiece. The driving process of all driving members is controlled by the control component, and the control component can also determine whether the grinding tool is close to the clamping jaw. When the grinding tool is about to approach one of the clamping jaws, the driving member is controlled to drive the clamping jaw closest to the grinding tool away from the workpiece, so that the grinding tool can grind the part of the workpiece that contacts the clamping jaw, thereby completing the grinding of the entire workpiece in one positioning process, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is a front view of a follower clamp according to an embodiment of the utility model.

[0021] Figure 2 It is a top view of a follower clamp according to an embodiment of the utility model.

[0022] Figure 3 This is a front view of a clamping jaw assembly according to an embodiment of the present invention.

[0023] Figure 4 This is a schematic diagram of the movement of the clamping jaws moving away from the workpiece according to an embodiment of the utility model.

[0024] Figure 5 This is a front view of a transmission rod according to an embodiment of the present utility model.

[0025] Figure 6 This is a front view of a clamping jaw according to an embodiment of the present invention. DETAILED DESCRIPTION

[0026] The following will describe in detail a specific embodiment of the utility model in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the description of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] In the description of the present utility model, unless otherwise clearly specified and limited, the terms "set", "install", "connection" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0028] The directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of description and simplified description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the utility model.

[0029] The terms "first", "second", "third" and the like are merely used to distinguish elements of similar nature, and do not indicate or imply relative importance or a particular order.

[0030] The terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of the elements listed and may also include additional elements not expressly listed.

[0031] Please refer to Figure 1 and Figure 2 , which shows a follow-up fixture provided in an embodiment of the utility model, used to fix a workpiece 4 that needs to be polished, including:

[0032] A base 1, the base 1 comprises a positioning column 11 and a positioning hole 12, the positioning column 11 is arranged in the positioning hole 12, and the positioning column 11 is used to position the workpiece 4;

[0033] A clamping jaw assembly 2, the clamping jaw assembly 2 is connected to the base 1, and the clamping jaw assembly 2 includes a driving member 21 and a clamping jaw 22 that is transmission-connected to the driving member 21, and the driving member 21 is used to drive the clamping jaw 22 to move toward or away from the positioned workpiece 4, so as to clamp or release the outer edge of the workpiece 4 through the clamping jaw 22;

[0034] The control component 3 is in communication connection with the driving member 21 , and is used to control the driving member 21 to drive the clamping jaw 22 approached by the tool 5 to move away from the workpiece 4 when the tool 5 for grinding the workpiece 4 approaches any clamping jaw 22 .

[0035] like Figure 1As shown, the base 1 can provide a mounting plane, a positioning hole 12 is opened on the mounting plane of the base 1, and the positioning column 11 is fixed on the mounting plane of the base 1 by inserting into the positioning hole 12. The workpiece 4 to be polished is placed on the base 1 and aligned with the positioning column 11 to ensure accurate positioning of the workpiece 4.

[0036] After determining that the workpiece 4 is positioned accurately, all driving members 21 are started by the control component 3, and each driving member 21 drives a clamping jaw 22 to move toward the workpiece 4. Since all driving members 21 are controlled by the control component 3, all clamping jaws 22 move toward the workpiece 4 synchronously, which can ensure that the clamping force on the workpiece 4 is more balanced and prevent the workpiece 4 from being offset due to excessive pressure from the clamping jaws 22.

[0037] In this embodiment, the control component 3 is electrically connected to the grinding tool to determine the movement position of the grinding tool. However, it is not limited to this. In other embodiments, a detection device such as an infrared detector can also be used to determine whether the grinding tool is close to one of the clamping jaws 22.

[0038] like Figure 2 As shown, in this embodiment, the first clamp 22 is taken as an example. The grinding tool grinds along the outer edge contour of the workpiece 4 in the counterclockwise direction M. When the control component 3 detects that the grinding tool is about to contact the first clamp 22, the control component 3 controls the drive member 21 connected to the first clamp 22 to start, thereby driving the first clamp 22 away from the workpiece 4 through the drive member 21, providing sufficient avoidance space for the grinding tool, and having no effect on the grinding process of the grinding tool. As the grinding tool is polished, after the grinding tool completes the grinding of the clamping portion between the first clamp 22 and the workpiece 4, the control component 3 again controls the drive member 21 to drive the first clamp 22 to move toward the workpiece 4 and clamp the workpiece 4.

[0039] In this embodiment, an infrared detection device can be set on both sides of the clamp 22 along the movement direction of the grinding tool. The two infrared detection devices are used to detect whether the grinding tool is close to the clamp 22 and whether the grinding tool is far away from the clamp 22, respectively, and transmit the detection results to the control component 3, thereby providing accurate control time for the control component 3.

[0040] In this embodiment, during the grinding process of the grinding tool, the control component 3 controls the clamping jaws 22 to provide sufficient avoidance space for the grinding route of the grinding tool, so that the grinding tool can grind to the part of the workpiece 4 that is supported by the clamping jaws 22, thereby eliminating the need for secondary clamping of the workpiece 4, thereby improving work efficiency.

[0041] In one embodiment, there are multiple positioning holes 12 , and the clamping jaw assemblies 2 include at least three. The at least three clamping jaw assemblies 2 are installed in multiple different positioning holes 12 to form different clamping ranges.

[0042] like Figure 2 As shown, six clamping jaw assemblies 2 are taken as an example in this embodiment. Because the workpiece 4 in this embodiment is elliptical, the six clamping jaw assemblies 2 are enclosed by six positioning holes 12 to form an elliptical shape, so as to be arranged along the outer edge of the workpiece 4. In other embodiments, the installation position of the clamping jaw assembly 2 can also be changed according to different workpiece shapes, so as to better fit the outer edge of the workpiece 4. If the clamping jaw assemblies 2 include at least three, it can be ensured that when one of the clamping jaw assemblies 2 is loosened, there are still two clamping jaw assemblies 2 to clamp the workpiece 4, thereby ensuring the stability of the clamping of the workpiece 4.

[0043] In one embodiment, the clamping jaw assembly 2 further includes a connecting rod 23 and a transmission rod 24, the two ends of the connecting rod 23 are respectively hinged to the driving member 21 and the transmission rod 24, and the end of the transmission rod 24 away from the connecting rod 23 is hinged to the clamping jaw 22, and the driving member 21 is used to drive the connecting rod 23 to move along the axial direction of the positioning hole 12, thereby driving the transmission rod 24 to move through the connecting rod 23, and the transmission rod 24 is used to drive the clamping jaw 22 to move toward or away from the positioned workpiece 4. In one embodiment, the clamping jaw assembly 2 further includes a slide groove 25, which is arranged at the end of the transmission rod 24 away from the driving member 21 along the axial direction of the positioning hole 12, and the clamping jaw 22 is connected to the slide groove 25 in a relatively slidable manner, and the clamping jaw 22 moves toward or away from the positioned workpiece 4 along the slide groove 25.

[0044] like Figure 3 As shown, the driving member 21 outputs power through the connecting rod 23, and the connecting rod 23 transmits the power to the clamping jaw 22 through the transmission rod 24. First, the clamping jaw 22 is placed in the slide groove 25. When the driving member 21 drives the connecting rod 23 to move toward the slide groove 25 along the axial direction of the positioning hole 12, the connecting rod 23 drives the transmission rod 24 to move together. Because the clamping jaw 22 is in the slide groove 25, the clamping jaw 22 abuts against the slide groove 25 under the drive of the transmission rod 24. Because the driving member 21, the clamping jaw 22, the connecting rod 23 and the transmission rod 24 are all hinged, the transmission rod 24 rotates under the drive of the connecting rod 23, thereby driving the clamping jaw 22 to slide in the slide groove 25.

[0045] In this embodiment, the driving member 21, the clamping jaw 22, the connecting rod 23 and the transmission rod 24 are all hinged, so that the driving of the driving member 21 in the vertical direction is converted into the sliding of the clamping jaw 22 in the horizontal direction, which can save space.

[0046] In one embodiment, the transmission rod 24 includes a first section arm 241 and a second section arm 242 that are bent and connected to each other. The first section arm 241 is hinged to the connecting rod 23, and the second section arm 242 is hinged to the clamping claw 22. When the connecting rod 23 drives the first section arm 241 to move toward the slide groove 25 along the axial direction of the positioning hole 12, the second section arm 242 drives the clamping claw 22 to abut against the slide groove 25 and move along the slide groove 25 in a direction away from the workpiece 4. In one embodiment, the first section arm 241 is hinged to the connecting rod 23 at the first end, and the second section arm 242 is hinged to the clamping claw 22 at the second end, and the distance between the first end and the second end is greater than the length of the slide groove 25.

[0047] like Figure 5 As shown, the transmission rod 24 is composed of two parts that are bent and connected to each other. Preferably, the transmission rod 24 is a crank arm. The power of the connecting rod 23 is transmitted to the second arm 242 through the first arm 241. Because the first arm 241 and the second arm 242 are bent to each other, the first arm 241 will rotate around the connection point between the first arm 241 and the second arm 242 when subjected to force, and can convert the force originally moving along the axial direction of the positioning hole 12 into a force moving along the axial direction perpendicular to the positioning hole 12.

[0048] like Figure 4 As shown, the movement process of the clamping jaw 22 away from the workpiece 4 is shown. When the A state is converted to the B state, the driving member 21 drives the connecting rod 23 to move toward the slide slot 25, thereby driving the first section arm 241 to move toward the slide slot 25. Because the second section arm 242 is in contact with the slide slot 25, it can no longer move in the direction toward the slide slot 25. Then, the second section arm 242 slides in the direction away from the first section arm 241 under the drive of the first section arm 241, thereby driving the clamping jaw 22 to slide in the direction away from the first section arm 241 through the second section arm 242. In this embodiment, the first section arm 241 is arranged close to the workpiece 4, that is, the second section arm 242 drives the clamping jaw 22 to move in the direction away from the workpiece 4.

[0049] When the B state is converted to the C state, the driving member 21 continuously drives the connecting rod 23 to move toward the slide groove 25 until the C state. In the C state, the second section arm 242 is also driven by the connecting rod 23 to move to a position abutting against the slide groove 25, and then the second section arm 242 can no longer move in the direction toward the slide groove 25. At this point, the first section arm 241 and the second section arm 242 are both abutting against the slide groove 25, completing the driving of the clamping jaw 22, and the clamping jaw 22 moves to a distance far enough from the workpiece 4, that is, the distance between the clamping jaw 22 and the workpiece 4 is enough for the grinding tool to pass through.

[0050] It can be seen in state C that after the driving member 21 completes the driving, both the first end and the second end are in contact with the slide slot 25. In this embodiment, the distance between the first end and the second end is greater than the length of the slide slot 25, so the first end can drive the clamping jaw 22 to slide out of the slide slot 25. Because the clamping jaw 22 is hinged to the first end, the clamping jaw 22 will rotate to a vertical state under the action of gravity, thereby saving space.

[0051] In one embodiment, the second section arm 242 further includes a connection hole 243 for hinged connection with the clamping jaw 22 , and the length of the connection hole 243 is greater than the diameter of the pin shaft for hinged connection with the clamping jaw 22 .

[0052] like Figure 5 As shown, the connection hole 243 for connecting the clamping jaw 22 is a waist hole, so that after the clamping jaw 22 is connected to the second section arm 242, it can slide in the connection hole 243, so that even if there is an error in the installation dimensions of the clamping jaw 22 and the second section arm 242, it can also be installed. And the sliding of the clamping jaw 22 in the connection hole 243 can also make the second section arm 242 drive the clamping jaw 22 to slide in the slide groove 25 more smoothly.

[0053] In one embodiment, the clamping jaw 22 includes a sliding portion 221 and a clamping portion 222 connected to each other, the sliding portion 221 is connected to the slide groove 25 in a relatively slidable manner, and the transmission rod 24 is connected to the sliding portion 221, and is used to drive the sliding portion 221 to slide along the slide groove 25, thereby driving the clamping portion 222 to move toward or away from the positioned workpiece 4 through the sliding portion 221. In one embodiment, the clamping jaw 22 also includes a buffer pad 223, and the buffer pad 223 is connected to a side of the clamping portion 222 facing the workpiece 4, and is used to buffer the clamping force of the clamping portion 222 on the workpiece 4. In one embodiment, the driving member 21 includes a cylinder connected to the connecting rod 23, and the cylinder is used to drive the connecting rod 23 to move along the axial direction of the positioning hole 12.

[0054] like Figure 6 As shown, in this embodiment, the sliding portion 221 and the clamping portion 222 are connected vertically to each other. The sliding portion 221 slides in the slide groove 25, driving the clamping portion 222 to abut against the workpiece 4. Because the sliding portion 221 is arranged in the slide groove 25, and the length of the sliding portion 221 is less than the length of the slide groove 25, it can be ensured that the clamping claw 22 can slide out of the slide groove 25. Therefore, it is necessary to clamp the workpiece 4 by the clamping portion 222. A buffer pad 223 is also provided on the side where the clamping portion 222 abuts against the workpiece 4. When the sliding portion 221 drives the clamping portion 222 to abut against the workpiece 4, the clamping portion 222 abuts against the workpiece 4 through the buffer pad 223, thereby avoiding problems such as indentation when the workpiece 4 is subjected to a clamping force.

[0055] In this embodiment, the driving member 21 is driven by a pneumatic cylinder, and in other embodiments, it can also be replaced by an oil cylinder or a motor.

[0056] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model shall be subject to the attached claims.

Claims

1. A follow-up fixture for fixing a workpiece (4) to be polished, characterized in that: include: A base (1), the base (1) comprising a positioning column (11) and a positioning hole (12), the positioning column (11) being arranged in the positioning hole (12), and the positioning column (11) being used to position the workpiece (4); A plurality of clamping jaw assemblies (2), each of the clamping jaw assemblies (2) being connected to the base (1), the clamping jaw assemblies (2) comprising a driving member (21) and a clamping jaw (22) drivingly connected to the driving member (21), the driving member (21) being used to drive the clamping jaw (22) to move toward or away from the positioned workpiece (4), thereby clamping or releasing the outer edge of the workpiece (4) through the clamping jaw (22); A control component (3) is connected to the drive member (21) in communication with the control component (3) and is used to control the drive member (21) to drive the clamping jaw (22) approached by the tool (5) to move away from the workpiece (4) when the tool (5) used to grind the workpiece (4) approaches any of the clamping jaws (22).

2. The follow-up clamp according to claim 1, characterized in that: There are a plurality of positioning holes (12), and the clamping jaw assemblies (2) include at least three. At least three clamping jaw assemblies (2) are installed in a plurality of different positioning holes (12) to form different clamping ranges.

3. The follow-up clamp according to claim 2, characterized in that: The clamping jaw assembly (2) further comprises a connecting rod (23) and a transmission rod (24), the two ends of the connecting rod (23) being respectively hinged to the driving member (21) and the transmission rod (24), the end of the transmission rod (24) away from the connecting rod (23) being hinged to the clamping jaw (22), the driving member (21) being used to drive the connecting rod (23) to move along the axial direction of the positioning hole (12), thereby driving the transmission rod (24) to move through the connecting rod (23), and the transmission rod (24) being used to drive the clamping jaw (22) to move toward or away from the positioned workpiece (4).

4. The follow-up clamp according to claim 3, characterized in that: The clamping jaw assembly (2) further comprises a slide groove (25), which is arranged at an end of the transmission rod (24) away from the driving member (21) along the axial direction of the positioning hole (12), and the clamping jaw (22) is connected to the slide groove (25) in a relatively slidable manner, and the clamping jaw (22) moves toward or away from the positioned workpiece (4) along the slide groove (25).

5. The follower clamp according to claim 4, characterized in that: The transmission rod (24) includes a first section arm (241) and a second section arm (242) which are bent and connected to each other. The first section arm (241) is hinged to the connecting rod (23), and the second section arm (242) is hinged to the clamping claw (22). When the connecting rod (23) drives the first section arm (241) to move along the axial direction of the positioning hole (12) toward the sliding groove (25), the second section arm (242) drives the clamping claw (22) to abut against the sliding groove (25) and move along the sliding groove (25) in a direction away from the workpiece (4).

6. The follow-up clamp according to claim 5, characterized in that: The second arm section (242) further comprises a connection hole (243) for being hinged to the clamping jaw (22), and the length of the connection hole (243) is greater than the diameter of the pin shaft for being hinged to the clamping jaw (22).

7. The follower clamp according to claim 5, characterized in that: The first section arm (241) is hinged to the connecting rod (23) at a first end, the second section arm (242) is hinged to the clamping claw (22) at a second end, and the distance between the first end and the second end is greater than the length of the slide groove (25).

8. The follow-up clamp according to claim 4, characterized in that: The clamping jaw (22) comprises a sliding portion (221) and a clamping portion (222) which are connected to each other. The sliding portion (221) is connected to the slide groove (25) in a relatively slidable manner. The transmission rod (24) is connected to the sliding portion (221) and is used to drive the sliding portion (221) to slide along the slide groove (25), thereby driving the clamping portion (222) to move toward or away from the positioned workpiece (4) through the sliding portion (221).

9. The follower clamp according to claim 8, characterized in that: The clamping jaw (22) further comprises a buffer pad (223), wherein the buffer pad (223) is connected to a side of the clamping portion (222) facing the workpiece (4) and is used to buffer the pressing force of the clamping portion (222) on the workpiece (4).

10. The follower clamp according to claim 3, characterized in that: The driving member (21) comprises a cylinder connected to the connecting rod (23), and the cylinder is used to drive the connecting rod (23) to move along the axial direction of the positioning hole (12).

Images