Embedded clamp disassembling and assembling jig

Abstract

The utility model discloses a dismounting and mounting jig for an embedded clamp. The jig is used for disassembling and assembling an embedded clamp on a machine tool spindle and comprises a ratchet wrench, and a jig body, a connecting rod and a step shaft which are axially connected in sequence, multiple bolts are arranged at the end, away from the connecting rod, of the jig body. The plurality of bolts can be inserted into a blocking cover on a machine tool shaft; the outer diameters of a plurality of step sections of the step shaft are sequentially reduced, and the end, with the maximum outer diameter, of the step shaft is connected with the connecting rod; the step shaft can extend into and be fixed on an open clamp on a back shaft of a machine tool; the ratchet wrench sleeves the connecting rod; the ratchet wheel can drive the connecting rod to rotate clockwise or anticlockwise so that the jig body and the blocking cover can rotate. Compared with the prior art, the embedded fixture dismounting and mounting jig can provide high-coaxiality support for the jig body and the fixture to be dismounted and mounted, the working step of dismounting and mounting a sleeve is omitted, dismounting and mounting are faster, and the dismounting and mounting efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of fixtures, in particular to an embedded fixture disassembly and assembly fixture. Background Art

[0002] A jig is a type of tool widely used in carpentry, ironwork, fittery, machinery, electronic control, and some other handicrafts. It is also called a mold or auxiliary tool. It is a model tool used to help position and fix the workpiece during the manufacturing process to ensure the accuracy and efficiency of processing or assembly.

[0003] Machine tools with counterspindles are widely used in fields requiring highly coordinated machining, such as the aerospace industry, which manufactures complex aircraft components, and the automotive industry, which mass-produces auto parts. In a machine tool with a counterspindle, the main spindle and counterspindle can operate independently or collaboratively. The counterspindle is typically located opposite the main spindle and is capable of reverse or supplementary machining. Its primary function is to provide torque and rotational force, making the workpiece's rotational motion on the machine tool smoother and more reliable. For example, in a dual-spindle powered turret machine tool, the two main spindles can perform different machining operations simultaneously, while the counterspindle can perform supplementary or reverse machining while the main spindle is machining, significantly improving machining efficiency and precision.

[0004] The fixture can quickly position and fix the workpiece, reducing the adjustment time during the processing or assembly process, thereby improving production efficiency. The machine tool shaft is often equipped with a fixture. Some fixtures are open-type, while others are fixed by a cover and embedded in the sleeve. The cover is located in the sleeve and is threadedly connected to the spindle. The embedded fixture is fixed between the cover and the spindle. When the cover is detached from the spindle, the embedded fixture naturally falls off. When using a traditional fixture to disassemble and assemble the embedded fixture on the spindle, it is necessary to use screws to fix the auxiliary sleeve and then support the fixture, thereby eliminating hand-held force and providing coaxial support. Then, a lever is inserted into the inner hole of the fixture to pry the fixture loose or tighten it to achieve the disassembly and assembly of the embedded fixture. Utility Model Content

[0005] In order to enrich the product types of fixtures and improve the efficiency of disassembly and assembly of embedded fixtures, an embodiment of the present utility model provides a fixture for disassembly and assembly of embedded fixtures.

[0006] The embodiment of the utility model provides an embedded fixture disassembly jig for disassembling and assembling an embedded fixture on a machine tool spindle, comprising a ratchet wrench, and a jig body, a connecting rod and a stepped shaft that are axially connected in sequence;

[0007] A plurality of latches are provided at one end of the fixture body away from the connecting rod; the plurality of latches can be inserted into the blocking cover on the machine tool shaft;

[0008] The outer diameters of the multiple steps of the stepped shaft decrease in sequence, and the end with the largest outer diameter of the stepped shaft is connected to the connecting rod;

[0009] The stepped shaft can be inserted into and fixed to an open fixture on the back shaft of the machine tool;

[0010] The ratchet wrench is provided on the connecting rod; the ratchet can drive the connecting rod to rotate clockwise or counterclockwise, so as to rotate the fixture body and the blocking cover.

[0011] In one or some optional embodiments, the connecting rod comprises a screw rod, a rotating portion and a connecting rod body that are axially connected in sequence;

[0012] The connecting rod body is connected to the fixture body;

[0013] The stepped shaft is provided with a threaded connection port, the screw rod extends into the threaded connection port and is threadedly connected to the stepped shaft;

[0014] The rotating portion abuts against the stepped shaft.

[0015] In one or some optional embodiments, the ratchet wrench is provided on the rotating portion, and the outer diameter of the connecting rod body is larger than the inner diameter of the ratchet wrench.

[0016] In one or some optional embodiments, the rotating portion is a hexagonal prism.

[0017] In one or some optional embodiments, the maximum outer diameter of the stepped shaft is greater than the inner diameter of the ratchet wrench.

[0018] In one or some optional embodiments, one end of the latch is a cylindrical pin and the other end is a top screw;

[0019] The fixture body is provided with an internal threaded hole, and the top screw is inserted into the internal threaded hole and threadedly connected to the fixture body.

[0020] In one or some optional embodiments, the ratchet wrench includes a wrench body, a ratchet, a pawl, a retaining spring and a reversing knob;

[0021] The ratchet portion is disposed within the wrench body;

[0022] The pawl and the clamping spring are arranged in the wrench body, and both ends of the clamping spring are fixedly connected to the wrench body respectively;

[0023] The pawl is engaged with the ratchet wheel;

[0024] The reversing knob is connected to the pawl and can drive the pawl to rotate to change the meshing direction of the pawl and the ratchet wheel.

[0025] In one or some optional embodiments, the plurality of pins are evenly arranged around the circumference of the fixture body.

[0026] In one or some optional embodiments, the connecting rod is welded to the fixture body.

[0027] In one or some optional embodiments, the length of each step of the stepped shaft is equal, and the length of each step is a preset length.

[0028] The beneficial effects of the above technical solution provided by the embodiment of the present utility model include at least:

[0029] The embedded fixture disassembly jig provided by the present invention has an outer diameter that increases from the end of each section of the stepped shaft, which can meet the requirements of open fixtures with different inner diameters. That is, it can be inserted into and fixed in open fixtures with different inner diameters. Thus, the jig body and the embedded fixture to be disassembled can be coaxially connected by means of the machine tool back shaft, providing high coaxial support for the jig body and the fixture to be disassembled, eliminating the step of disassembling the sleeve, making disassembly and assembly faster and improving efficiency. At the same time, the open fixture on the machine tool back shaft is used to axially fix the stepped shaft, which can prevent the jig body from suddenly falling out and eliminate the risk of injury to workers.

[0030] The embedded clamp disassembly and assembly jig provided by the embodiment of the present invention facilitates the rotation of the jig body by arranging a ratchet wrench on the connecting rod. Compared with using a lever to pry the jig body to rotate, the ratchet wrench is used to drive the jig body to rotate, which has a more flexible angle and is simpler and more convenient to operate. The rotation direction can be easily changed to achieve switching between loosening and tightening.

[0031] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be achieved and obtained by the structures particularly pointed out in the written description and the accompanying drawings.

[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] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0034] Figure 1 This is a schematic structural diagram of the embedded clamp disassembly and assembly fixture provided by an embodiment of the utility model.

[0035] Reference numerals:

[0036] 1. Sleeve; 2. Embedded fixture; 3. Cover; 4. Fixture body; 41. Latch; 5. Connecting rod; 51. Connecting rod body; 52. Rotating part; 53. Screw; 6. Ratchet wrench; 61. Wrench body; 62. Reversing button; 7. Step shaft; 8. Open fixture; 9. Back shaft. DETAILED DESCRIPTION

[0037] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0038] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," "far," "near," "front," and "rear" and the like, indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0040] The inventors discovered that when using existing jigs to disassemble and assemble embedded fixtures, an auxiliary sleeve is required to ensure coaxiality with the main shaft. However, the auxiliary sleeve is heavy and needs to be fixed to the main shaft with screws during assembly and disassembly, requiring high assembly and disassembly precision. Even the slightest deformation requires grinding, which is time-consuming and labor-intensive. Furthermore, after the sleeve is fixed, the jig is rotated using a lever. Due to space limitations, the rotation angle is small, requiring frequent insertion and removal of the lever to change the angle before rotating. This is labor-intensive, time-consuming, and inconvenient. Furthermore, the torque generated during the lever rotation process is high, and since the distal end of the jig is not fixed, it can slip out of the cover hole, posing a risk of injury to personnel.

[0041] Based on this, the present invention provides an embedded clamp disassembly jig, which is described in detail below through specific embodiments.

[0042] The embodiment of the utility model provides an embedded fixture disassembly jig for disassembling and assembling the embedded fixture 2 on the spindle of a machine tool. Figure 1 As shown, it includes a ratchet wrench 6, and a fixture body 4, a connecting rod 5 and a stepped shaft 7 that are axially connected in sequence;

[0043] The end of the fixture body 4 away from the connecting rod 5 is provided with a plurality of pins 41; the plurality of pins 41 can be inserted into the stop cover 3 on the machine tool shaft;

[0044] The outer diameters of the multiple steps of the stepped shaft 7 decrease in sequence, and the end with the largest outer diameter of the stepped shaft 7 is connected to the connecting rod 5;

[0045] The stepped shaft 7 can be inserted into and fixed to an open fixture 8 on a machine tool back shaft 9;

[0046] The ratchet wrench 6 is sleeved on the connecting rod 5 ; the ratchet can drive the connecting rod 5 to rotate clockwise or counterclockwise, so as to rotate the fixture body 4 and the blocking cover 3 .

[0047] In this embodiment, refer to Figure 1 As shown, the shape and number of the pins 41 on the jig body 4 match the pin holes (not shown) in the cover 3 on the spindle. The pins 41 are cylindrical in shape, and the number of pins 41 does not exceed the number of pin holes in the cover 3. Multiple pins are evenly distributed around the circumference of the jig body to achieve uniform force. Preferably, six pins 41 are provided on the jig body 4, which are aligned with the position distribution of the pin holes in the cover 3. This allows the jig body 4 and the cover 3 to be tightly coupled, effectively preventing the pins 41 from falling out of the pin holes in the cover 3 when the jig body 4 rotates.

[0048] Further, refer to Figure 1 As shown, the pin 41 on the jig body 4 is fixed to the jig body 4 by a threaded connection. Specifically, one end of the pin 41 is a cylindrical pin for inserting into the pin hole of the baffle 3, and the other end is a top screw. The jig body 4 is provided with an internal threaded hole, and the top screw is inserted into the internal threaded hole to fix the pin 41 in the jig body 4.

[0049] In this embodiment, refer to Figure 1As shown, the stepped shaft 7 can be inserted into and fixed on the open fixture 8 on the machine tool back shaft 9, and the outer diameter of the stepped shaft 7 becomes larger and larger from the end close to the machine tool back shaft 9. The length of each stage is equal and can match the inner hole length of the open fixture 8 on the back shaft 9. That is, after any stage is inserted into the open fixture 8 on the back shaft 9, the stepped shaft 7 can move axially a small distance in the inner hole of the open fixture 8, and the length of the stage is sufficient to provide effective coaxial support for the embedded fixture disassembly and assembly jig to prevent it from falling out.

[0050] The embedded fixture disassembly jig provided by the embodiment of the present invention has an outer diameter of each section of the stepped shaft 7 that increases sequentially from the end, which can meet the requirements of open fixtures 8 of different inner diameters. That is, it can be inserted into and fixed in open fixtures 8 of different inner diameters, and cooperate with the inner hole clearance of the open fixture 8, so that the jig body 4 and the embedded fixture 2 to be disassembled can be achieved with the help of the machine tool back shaft 9, providing a higher coaxial support for the jig body 4 and the fixture to be disassembled, eliminating the step of disassembling the sleeve 1, making disassembly and assembly faster and improving the efficiency of disassembly and assembly. At the same time, the open fixture 8 on the machine tool back shaft 9 is used to axially fix the stepped shaft 7, which can prevent the pin 41 on the jig body 4 from falling out of the cover 3, eliminating the risk of injuring the staff.

[0051] In this embodiment, refer to Figure 1 As shown, the fixture body 4, the connecting rod 5 and the stepped shaft 7 are axially fixedly connected in sequence, and the ratchet wrench 6 cooperates with the connecting rod 5. By rotating the ratchet wrench 6, the connecting rod 5 can be driven to rotate, and the torque of the connecting rod 5 is transmitted to the fixture body 4 and the stepped shaft 7, so that the fixture body 4 and the stepped shaft 7 rotate together, thereby driving the cover 3 to rotate. The cover 3 in the sleeve 1 can be removed or installed by loosening or tightening the cover 3. Since the stepped shaft 7 can move axially a small distance within the inner hole of the open clamp 8, in the initial stage of disassembly, it is sufficient to prevent the pin 41 on the fixture body 4 from falling out of the pin hole in the cover 3, and at the same time, the cover 3 can be loosened. After the cover 3 is loosened, the back shaft 9 is moved to realize the disassembly of the embedded fixture 2.

[0052] The embedded clamp disassembly jig provided by the embodiment of the present invention facilitates the rotation of the jig body 4 by sleeve-arranging a ratchet wrench 6 on the connecting rod 5. Compared with using a lever to pry the jig body 4 to rotate, the ratchet wrench is used to drive the jig body 4 to rotate, which has a more flexible angle and is simpler and more convenient to operate. The rotation direction can be easily changed to achieve switching between loosening and tightening.

[0053] In one embodiment, referring to Figure 1As shown, the connecting rod 5 includes a screw 53, a rotating portion 52, and a connecting rod body 51, which are axially connected in sequence. The connecting rod body 51 is connected to the fixture body 4, and the connection method can be welding. The stepped shaft 7 has a threaded connection opening at the largest outer diameter end, and the screw 53 extends into the threaded connection opening to thread the connecting rod 5 and the stepped shaft 7. The outer diameter of the screw 53 is smaller than the outer diameter of the rotating portion 52. After the screw 53 extends into the threaded interface of the stepped shaft 7, the rotating portion 52 abuts the stepped shaft 7.

[0054] In one embodiment, referring to Figure 1 As shown, the ratchet wrench 6 is sleeved on the rotating portion 52 , and the rotating portion 52 is a hexagonal prism, so that it can cooperate with the ratchet wrench 6 and be screwed by the ratchet wrench 6 .

[0055] In one embodiment, referring to Figure 1 As shown, the ratchet wrench 6 is sleeved on the rotating part 52, the outer diameter of the connecting rod body 51 is larger than the inner diameter of the ratchet wrench 6, and the maximum outer diameter of the step shaft 7 is also larger than the inner diameter of the ratchet wrench 6, so that the ratchet wrench 6 can only move axially within the length range of the rotating part 52, preventing the ratchet wrench 6 from detaching from the rotating part 52 or moving arbitrarily in the axial direction, thereby improving work efficiency and effectively preventing the ratchet wrench 6 from slipping and injuring the staff.

[0056] In an alternative embodiment, reference Figure 1 As shown, the ratchet wrench 6 is a bidirectional ratchet wrench 6 with adjustable rotation direction, comprising a wrench body 61, a ratchet (not shown), a pawl (not shown), a retaining spring (not shown), and a reversing knob. The outer ring of the ratchet is disposed within the accommodation space at the head of the wrench body 61, and the inner ring of the ratchet protrudes from the accommodation space at the head of the wrench body 61 so that the inner ring of the ratchet can engage with the rotating portion 52; the pawl and retaining spring are disposed within the wrench body 61, and the ends of the retaining spring are respectively fixedly connected to the wrench body 61. The center of the pawl is coaxially hinged with the wrench body 61 and can rotate relative to the wrench body 61; further, the pawl engages with the outer ring of the ratchet, and the reversing knob connects the pawl and can drive the pawl to rotate to change the direction of engagement between the pawl and the ratchet. When the ratchet wrench 6 is used to turn the rotating part 52, the inner ring of the ratchet and the rotating part 52 are locked and the ratchet can be rotated. After loosening, the wrench body can be restored to its original position. Therefore, the wrench body only needs to be rotated several times through a small angle to remove or install the cover 3, without requiring a large operating space, and the rotation direction can be easily changed to switch between loosening and tightening. Compared with using a lever to pry the fixture body to rotate, this saves time and effort, effectively prevents the fixture body 4 from suddenly falling out and injuring workers, and improves the ease of operation and work safety.

[0057] The process of disassembling the embedded fixture 2 on the machine tool spindle using the embedded fixture disassembly jig provided by the embodiment of the present invention may specifically include:

[0058] Insert the pin 41 on the fixture body 4 into the pin hole of the cover 3 to tightly fit the fixture body 4 and the cover 3;

[0059] Move the back shaft 9 and insert the stepped shaft 7 into the inner hole of the open clamp 8 on the back shaft 9 to provide coaxial support and ensure that the stepped shaft 7 can move a small distance in the direction of the back shaft 9;

[0060] Turn the ratchet wrench 6 to loosen the cover 3;

[0061] The back shaft 9 is removed and the blocking cover 3 is removed, thereby disassembling the embedded fixture 2 .

[0062] The process of installing the embedded fixture 2 on the machine tool spindle using the embedded fixture disassembly and assembly jig provided by the embodiment of the utility model may specifically include:

[0063] Insert the pin 41 on the fixture body 4 into the pin hole of the cover 3 to tightly fit the fixture body 4 and the cover 3;

[0064] Move the back shaft 9 and insert the stepped shaft 7 into the inner hole of the open fixture 8 on the back shaft 9 to provide coaxial support and ensure that the stepped shaft 7 can move a small distance toward the direction of the embedded fixture 2;

[0065] Turn the ratchet wrench 6 to tighten the cover 3 to complete the fixed installation of the embedded clamp 2, and then remove the back shaft 9.

[0066] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. The present disclosure is not limited to the precise structure described above and illustrated in the accompanying drawings, and various modifications and variations may be made without departing from its scope. The scope of the present disclosure is limited solely by the appended claims. Thus, to the extent such modifications and variations fall within the scope of the claims and their equivalents, the present disclosure is intended to include such modifications and variations.

Claims

1. An embedded fixture disassembly and assembly jig, used for disassembling and assembling embedded fixtures on a machine tool spindle, characterized in that: It includes a ratchet wrench, and a fixture body, a connecting rod and a stepped shaft that are axially connected in sequence; A plurality of latches are provided at one end of the fixture body away from the connecting rod; the plurality of latches can be inserted into the blocking cover on the machine tool shaft; The outer diameters of the multiple steps of the stepped shaft decrease in sequence, and the end with the largest outer diameter of the stepped shaft is connected to the connecting rod; The stepped shaft can be inserted into and fixed to an open fixture on the back shaft of the machine tool; The ratchet wrench is provided on the connecting rod; the ratchet can drive the connecting rod to rotate clockwise or counterclockwise, so as to rotate the fixture body and the blocking cover.

2. The embedded fixture disassembly jig according to claim 1, characterized in that: The connecting rod comprises a screw rod, a rotating portion and a connecting rod body which are axially connected in sequence; The connecting rod body is connected to the fixture body; The stepped shaft is provided with a threaded connection port, the screw rod extends into the threaded connection port and is threadedly connected to the stepped shaft; The rotating portion abuts against the stepped shaft.

3. The embedded fixture disassembly jig according to claim 2, characterized in that: The ratchet wrench is arranged on the rotating part, and the outer diameter of the connecting rod body is larger than the inner diameter of the ratchet wrench.

4. The embedded fixture disassembly jig according to claim 2, characterized in that: The rotating part is a hexagonal prism.

5. The embedded fixture disassembly jig according to claim 1, characterized in that: The maximum outer diameter of the stepped shaft is greater than the inner diameter of the ratchet wrench.

6. The embedded fixture disassembly jig according to claim 1, characterized in that: One end of the latch is a cylindrical pin, and the other end is a top screw; The fixture body is provided with an internal threaded hole, and the top screw is inserted into the internal threaded hole and threadedly connected to the fixture body.

7. The embedded fixture disassembly jig according to claim 1, characterized in that: The ratchet wrench comprises a wrench body, a ratchet, a pawl, a retaining spring and a reversing knob; The ratchet portion is disposed within the wrench body; The pawl and the clamping spring are arranged in the wrench body, and both ends of the clamping spring are fixedly connected to the wrench body respectively; The pawl is engaged with the ratchet wheel; The reversing knob is connected to the pawl and can drive the pawl to rotate to change the meshing direction of the pawl and the ratchet wheel.

8. The embedded fixture disassembly jig according to claim 1, characterized in that: The plurality of pins are evenly arranged in the circumferential direction of the fixture body.

9. The embedded fixture disassembly jig according to claim 1, characterized in that: The connecting rod is welded to the fixture body.

10. The embedded fixture disassembly jig according to claim 1, characterized in that: The length of each step of the stepped shaft is equal, and the length of each step is a preset length.

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