Positioning fixture and machine tool

Abstract

The utility model relates to the field of diamond processing, and discloses a positioning fixture and a machine tool, the positioning fixture comprises a support plate, a connecting shaft, a swing rod, a sliding block, a bonding seat and a locking mechanism, the swing rod can relatively slide in the length direction of the connecting shaft, so that different positions of the sliding block can be conveniently adjusted; the position of the sliding block can be further adjusted by adjusting the relative swing angle between the swing rod and the connecting shaft. The locking mechanism is arranged on the rotating shaft and used for pressing the swing rod downwards or loosening the swing rod. The locking mechanism presses the swing rod downwards to enable the sliding block of the swing rod to be attached to the supporting plate downwards, and therefore the positions of the sliding block and the swing rod are locked through friction force generated between the sliding block and the supporting plate. Through reasonable design of the parts, the efficient and accurate positioning function is achieved.

Description

Technical Field

[0001] The utility model relates to the field of diamond processing, in particular to a positioning fixture and a machine tool. Background Art

[0002] Currently, if a diamond needs to be processed at multiple angles, it is first glued to the end face of a rod-shaped shaft using glue or other methods. The rod-shaped shaft is then clamped to a chuck, and the laser beam is adjusted by adjusting the rotation angle of the chuck to process the diamond from different angles.

[0003] However, since the diamond is manually attached to the end face of the shaft, it is difficult to ensure the concentricity of the shaft and the diamond. Therefore, in the existing technology, the diamond is generally first attached to a magnet, which is then magnetically attached to the end face of the shaft. When synchronization needs to be adjusted, the magnet can be gently tapped with a hammer to fine-tune the position of the diamond. However, to ensure that the magnet is firmly attached, its magnetic force is usually not too weak, making fine adjustment difficult. Accurate adjustment requires repeated tapping, which is difficult, time-consuming and labor-intensive. Utility Model Content

[0004] The technical problem to be solved by the present invention is to solve at least one of the above-mentioned technical problems.

[0005] The solution of the utility model to solve its technical problems is:

[0006] A positioning fixture includes a support plate, a connecting shaft, a rocker arm, a slider, an adhesive seat, and a locking mechanism; the connecting shaft is vertically fixed to the support plate, the rocker arm is rotatably arranged on the connecting shaft, and the rocker arm can slide relatively along the length direction of the connecting shaft; the slider is sleeved on the rocker arm, and the slider and the rocker arm can slide relatively along the length direction of the rocker arm; the slider is placed on the support plate; the adhesive seat is arranged on the slider; the locking mechanism is arranged on the connecting shaft, and the locking mechanism is used to press the rocker arm toward the support plate, so that the rocker arm presses the slider onto the support plate.

[0007] As a further improvement of the above technical solution, it also includes a clamping shaft vertically fixed on the bottom surface of the support plate, and the connecting shaft is vertically fixed on the upper surface of the support plate and close to the edge of the support plate.

[0008] As a further improvement of the above technical solution, the adhesive base includes an adhesive rod and an adhesive platform, the adhesive rod is vertically fixed on the slider, one end of the adhesive rod is fixed on the slider, and the adhesive platform is fixed on the other end of the adhesive rod.

[0009] As a further improvement of the above technical solution, the rocker arm includes a shaft sleeve and a rod body, the shaft sleeve is sleeved on the connecting shaft, and the rod body is fixed on the shaft sleeve; the rod body is parallel to the support plate.

[0010] As a further improvement of the above technical solution, the locking mechanism includes a first cam handle, a first screw and a nut, the nut is threadedly engaged with the first screw, the first screw is coaxially fixed to the top of the connecting shaft, the first cam handle is arranged on the first screw, the rocker arm is arranged between the first cam handle and the support plate, and the first cam handle is used to press the rocker arm onto the support plate.

[0011] As a further improvement of the above technical solution, a vertical section is provided on the first screw rod, on which a pivot is provided for rotationally connecting to the first cam handle, and a cotter pin is inserted into the first screw rod for limiting the nut from separating from the first screw rod.

[0012] As a further improvement of the above technical solution, the locking mechanism includes a second screw coaxially fixed to the top of the connecting shaft and a hand-tightening nut cooperating with the second screw, and the hand-tightening nut is used to press the rocker arm onto the support plate.

[0013] As a further improvement of the above technical solution, the locking mechanism includes a pressure pad that is sleeved on the connecting shaft and located above the rocker arm. A rotatable second cam handle is provided at the top of the connecting shaft. The second cam handle is used to drive the pressure pad to press the rocker arm against the support plate.

[0014] The present invention also provides a machine tool comprising the positioning fixture as described above.

[0015] The beneficial effects of the present invention are as follows: the connecting shaft serves to connect the support plate and the rocker arm. The rocker arm is arranged on the connecting shaft and is rotatable relative to the connecting shaft. The rocker arm can slide relative to the length of the connecting shaft to adjust different positions of the slider. The position of the slider can also be further adjusted by adjusting the relative swing angle between the rocker arm and the connecting shaft. The locking mechanism is arranged on the rotating shaft and is used to press the rocker arm downward or release the rocker arm. By pressing the rocker arm downward, the locking mechanism causes the slider to press downward against the support plate, thereby utilizing the friction generated between the slider and the support plate to lock the position of the slider and the rocker arm. Through the rational design of these components, an efficient and precise positioning function is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view of the positioning fixture of the first embodiment.

[0017] Figure 2 The first embodiment of the positioning fixture is a three-dimensional Figure 1 .

[0018] Figure 3 The first embodiment of the positioning fixture is a three-dimensional Figure 2 .

[0019] Figure 4 This is a three-dimensional diagram of a positioning fixture according to a second embodiment.

[0020] Figure 5 This is a three-dimensional diagram of a positioning fixture according to a third embodiment.

[0021] In the accompanying drawings: 1-support plate, 2-connecting shaft, 3-rocker arm, 31-sleeve, 32-rod body, 33-limiting block, 4-slider, 5-locking mechanism, 51-first cam handle, 52-first screw, 521-vertical section, 53-nut, 54-pivot, 55-cotter pin, 56-pressure pad, 57-second cam handle, 58-second screw, 59-hand nut, 6-clamping shaft, 8-adhesive seat, 81-adhesive rod, 82-adhesive platform. DETAILED DESCRIPTION

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the above briefly describes the drawings required for describing the embodiments. Obviously, the drawings described are only part of the embodiments of the present invention, not all of them. Those skilled in the art can also derive other design solutions and drawings based on these drawings without inventive efforts.

[0023] The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention. In addition, all the connections / connection relationships mentioned in the text do not refer to the direct connection of components, but refer to the fact that a better connection structure can be formed by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the present invention can be combined interchangeably without conflicting with each other.

[0024] Reference Figure 1-Figure 5, a positioning fixture, which includes a support plate 1, a connecting shaft 2, a rocker arm 3, a slider 4, an adhesive seat 8, and a locking mechanism 5, wherein the connecting shaft 2 is vertically fixed on the support plate 1, the rocker arm 3 is rotatably arranged on the connecting shaft 2, the rocker arm 3 can slide relatively along the length direction of the connecting shaft 2, the slider 4 is sleeved on the rocker arm 3, and the slider 4 and the rocker arm 3 can slide relatively along the length direction of the rocker arm 3; the slider 4 is placed on the support plate 1, and the adhesive seat 8 is arranged on the slider 4; the locking mechanism 5 is arranged on the connecting shaft 2, and the locking mechanism 5 is used to press the rocker arm 3 toward the support plate 1, so that the rocker arm 3 presses the slider 4 to the support plate 1.

[0025] In practice, the positioning fixture is used to position the diamond. The positioning fixture is installed on the AC-axis turntable of the machine tool. Because each diamond blank has a different shape and size, the staff needs to draw two reference points on the diamond blank. The line connecting the two reference points is set as the center axis of the diamond blank. During processing, it is necessary to ensure that the center axis of the diamond blank is adjusted to be coaxial with the C-axis of the AC-axis turntable. By designing that the rocker 3 can rotate around the connecting shaft 2 and the slider 4 can slide relative to the rocker 3, the adhesive base 8 can achieve more precise three-dimensional spatial adjustment, facilitating the rapid adjustment of the position and angle of the adhesive base 8 according to diamonds of different sizes and shapes, ensuring that the diamond is coaxial with the C-axis of the AC-axis turntable. Once adjusted into place, it is firmly locked by the locking mechanism 5. The locking mechanism 5 presses the rocker 3 downward, causing the slider 4 to press downward against the support plate 1, thereby utilizing the friction generated between the slider 4 and the support plate 1 to lock the position of the slider 4 and the rocker 3. Even in a high-intensity laser processing vibration environment, the adhesive base 8 can remain absolutely stable, avoiding processing errors caused by loosening of the positioning platform during processing, and significantly improving the processing accuracy and surface finish of the final product.

[0026] Furthermore, the positioning fixture further includes a clamping shaft 6 vertically fixed to the bottom surface of the support plate 1. The connecting shaft 2 is vertically fixed to the upper surface of the support plate 1 and close to the edge of the support plate 1 to prevent the connecting shaft 2 from interfering with the movement of the slider 4. The clamping shaft 6 can be clamped by a clamping mechanism such as a chuck or a spindle, thereby being smoothly installed on the AC axis turntable.

[0027] Specifically, the adhesive base 8 includes a pasting rod 81 and a pasting platform 82, wherein the pasting rod 81 is vertically fixed on the slider 4, one end of the pasting rod 81 is fixed on the slider 4, and the pasting platform 82 is fixed on the other end of the pasting rod 81. Generally, the area of the pasting platform 82 is larger than the area of the end face of the pasting rod 81 to accommodate diamonds of various specifications and sizes. By setting the pasting rod 81 and the pasting platform 82, after the diamond processing is completed, the glue pasting area is cut by laser, so that the diamond falls off the pasting platform 82. By setting the pasting rod 81, there is a distance between the pasting platform 82 and the slider 4. This avoids sticking the diamond on the slider 4, which may cause the risk of damaging the slider 4 when cutting the glue.

[0028] In some embodiments, the pendulum 3 includes a rod body 3231 and a rod portion. The rod body 3231 is sleeved onto the connecting shaft 2, and the rod portion is fixed to the rod body 3231. During use, the rod body 3231 and the connecting shaft 2 can rotate relative to each other, thereby achieving relative rotation between the pendulum 3 and the connecting shaft 2. Combined with the relative rotation between the slider 4 and the rod portion, the position of the slider 4 can be adjusted using polar coordinates.

[0029] In actual use, a sliding hole that runs through the width of the sliding block 4 is opened on the sliding block 4, and the rod body is inserted into the sliding hole.

[0030] In some embodiments, the rod is parallel to the support plate 1. This structure is simple and easy to set up. This structure is easy to produce and assemble. In addition, it is also easy to determine the position of the slider 4.

[0031] In order to prevent the slider 4 from separating from the rod body, a limit block 33 is installed on the rod body of the rocker rod 3.

[0032] Example 1:

[0033] For details, see Figure 1-Figure 3As shown, the locking mechanism 5 includes a first cam handle 51, a first screw 52, and a nut 53. The nut 53 is threadedly engaged with the first screw 52. The first screw 52 is coaxially fixed to the top of the connecting shaft 2. The first cam handle 51 is mounted on the first screw 52. The rocker arm 3 is positioned between the first cam handle 51 and the support plate 1. The first cam handle 51 is used to press the rocker arm 3 against the support plate 1. This structure is simple and easy to set up. When the rocker arm 3 is pressed downward, the rocker arm 3 is used to press the slider 4 downward, so that the slider 4 is close to the support plate 1. The operator can rotate the first cam handle 51 to press the rocker arm 3 downward, thereby locking the slider 4 in place using strong friction. The operator then rotates the nut 53. The threaded engagement between the nut 53 and the first screw 52 presses the cam on the first cam handle 51 downward, locking the first cam handle 51 and preventing it from rotating.

[0034] Preferably, a vertical section 521 is provided on the first screw rod 52 , and a pivot 54 rotatably connected to the first cam handle 51 is provided on the vertical section 521 . A cotter pin 55 for limiting the nut 53 from separating from the first screw rod 52 is inserted into the first screw rod 52 .

[0035] Example 2:

[0036] For details, see Figure 4 As shown, the locking mechanism 5 includes a second screw 58 coaxially fixed to the top of the connecting shaft 2 and a hand nut 59 cooperating with the second screw 58. The hand nut 59 is used to tighten the swing arm 3 to the support plate 1. The use of the hand nut allows the operator to easily tighten and loosen the swing arm 3 without tools, greatly improving work efficiency, reducing operational difficulty, and making the adjustment process faster and more user-friendly.

[0037] Example 3:

[0038] For details, see Figure 5 As shown, the locking mechanism 5 includes a pressure pad 56 that is sleeved on the connecting shaft 2 and located above the rocker arm 3. A rotatable second cam handle 57 is provided at the top end of the connecting shaft 2. The second cam handle 57 is used to drive the pressure pad 56 to press the rocker arm 3 against the support plate 1. The introduction of the second cam handle 57 enables the operator to achieve the pressing operation of the rocker arm 3 through a simple rotation action, without the need for complex tools or a lot of physical strength, significantly improving the ease of use and operating efficiency of the system. The pressure pad 56 not only ensures that the pressure is evenly distributed on the rocker arm 3, but also more effectively reduces local stress concentration and protects the rocker arm 3 from damage. The stop rubber block on the pressure pad 56 also serves to stop the second cam handle 57 after pressure is applied.

[0039] The present invention further provides a machine tool including a positioning fixture as described in any of the above technical solutions. Since the positioning fixture has been described above, those skilled in the art should be able to understand it in conjunction with the accompanying drawings. Therefore, the positioning fixture will not be further described here.

[0040] The above specifically describes the preferred embodiments of the present invention, but the present invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A positioning fixture, characterized in that: include: Support plate, a connecting shaft, the connecting shaft being vertically fixed on the support plate; a swing rod, the swing rod being rotatably disposed on the connecting shaft and being relatively slidable along the length direction of the connecting shaft; A slider, the slider is sleeved on the swing rod, and the slider and the swing rod can slide relative to each other along the length direction of the swing rod; the slider is placed on the support plate; A fixing seat, wherein the fixing seat is provided on the slider; and a locking mechanism, wherein the locking mechanism is arranged on the connecting shaft and is used to press the rocker arm toward the support plate so that the rocker arm presses the slider onto the support plate.

2. The positioning fixture according to claim 1, characterized in that: It also includes a clamping shaft, which is vertically fixed on the bottom surface of the support plate, and the connecting shaft is vertically fixed on the upper surface of the support plate and close to the edge of the support plate.

3. The positioning fixture according to claim 1, characterized in that: The adhesive base includes an adhesive rod and an adhesive platform. The adhesive rod is vertically fixed on the slider. One end of the adhesive rod is fixed on the slider, and the adhesive platform is fixed on the other end of the adhesive rod.

4. The positioning fixture according to claim 1, characterized in that: The rocker arm comprises a shaft sleeve and a rod body, the shaft sleeve is sleeved on the connecting shaft, and the rod body is fixed on the shaft sleeve; the rod body is parallel to the support plate.

5. The positioning fixture according to claim 1, characterized in that: The locking mechanism includes a first cam handle, a first screw and a nut, the nut is threadedly engaged with the first screw, the first screw is coaxially fixed to the top of the connecting shaft, the first cam handle is arranged on the first screw, and the rocker arm is arranged between the first cam handle and the support plate, and the first cam handle is used to press the rocker arm onto the support plate.

6. The positioning fixture according to claim 5, characterized in that: The first screw rod is provided with a vertical section, on which a pivot shaft rotatably connected to the first cam handle is provided. The first screw rod is inserted with a cotter pin for limiting the nut from separating from the first screw rod.

7. The positioning fixture according to claim 1, characterized in that: The locking mechanism includes a second screw rod coaxially fixed to the top of the connecting shaft and a hand-tightening nut matched with the second screw rod, and the hand-tightening nut is used to press the rocker arm onto the support plate.

8. The positioning fixture according to claim 1, characterized in that: The locking mechanism includes a pressure pad that is sleeved on the connecting shaft and located above the rocker arm. The top end of the connecting shaft is provided with a rotatable second cam handle, which is used to drive the pressure pad to press the rocker arm onto the support plate.

9. The positioning fixture according to claim 4, characterized in that: A limiting block for limiting the sliding block from separating from the rod body is installed on the rod body of the swing rod.

10. A machine tool, characterized in that: Comprising a positioning fixture as described in any one of claims 1-9.

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