Locking clamp for diamond machining

Abstract

The utility model relates to a locking fixture for diamond processing, which comprises a frame body capable of rotating around a first axis under the driving of processing equipment, and a clamping mechanism which is arranged at the upper part of the frame body and is provided with an exposure area for exposing two surfaces to be processed of a diamond, and is characterized in that a rotating mechanism is arranged at the lower part of the frame body; a rotating space capable of allowing the clamping mechanism to rotate is formed in the frame body, the rotating mechanism can drive the clamping mechanism to rotate around a second axis so as to be switched between a first station and a second station, and the first station and the second station are used for machining two to-be-machined surfaces correspondingly; the clamping device has the advantages that the rotating mechanism for driving the clamping mechanism is arranged on the frame body, so that the clamping mechanism not only can rotate around the first axis of the mounting shaft, but also can rotate around the second axis and can be switched between the first station and the second station; therefore, the locking clamp not only has relatively strong capability of machining the curved surface of the free space, but also can be used for carrying out double-sided machining on the diamond.

Description

Technical Field

[0001] The utility model relates to the technical field of diamond processing, in particular to a locking clamp used for diamond processing. Background Art

[0002] When machining diamonds using machine tools and other processing equipment, a locking fixture is required to fix the diamond in the correct processing position for processing. However, the clamping mechanism of the traditional locking fixture often does not have the function of rotation. Therefore, when double-sided processing of the diamond is required, the operator needs to manually open the clamping mechanism after processing one side of the diamond, turn the other side of the diamond over, and then use the clamping mechanism to fix the diamond again. Only in this way can the processing of the other side of the diamond be completed. This process is inefficient and has large errors.

[0003] To this end, the applicant has proposed a locking fixture for diamond processing that can rotate automatically, specifically referring to the locking fixture provided in the Chinese utility model patent "A locking fixture for diamond processing" with patent number CN202321877122.X (publication number CN220261559U). However, the fixture needs to replace the operator with the rotating shaft of the processing equipment to provide the driving force required for rotation, such as the five-axis machining center provided in the Chinese invention application "A linear motor five-axis machining center" with application number CN202110718518.9 (publication number CN113334099A). The machining equipment has an independent A-axis turntable and a C-axis turntable, which makes the fixture installed on the machining equipment only select one from the A-axis and the C-axis, so that the clamping mechanism of the locking fixture has only one degree of rotational freedom, resulting in a relatively insufficient machining capability for the diamond free space surface. Therefore, it is necessary to further improve the prior art. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a locking clamp in view of the above-mentioned existing technical status, which not only has a relatively strong ability to process free space curved surfaces, but also can meet the requirements of double-sided processing of diamonds.

[0005] The technical solution adopted by the utility model to solve the above technical problems is: the locking fixture for diamond processing includes:

[0006] A frame, one side of which is provided with a mounting shaft for attaching to a processing device, and the frame can rotate around a first axis X of the mounting shaft under the drive of the processing device;

[0007] A clamping mechanism, arranged at the upper part of the frame, for clamping the object M to be processed, the clamping mechanism is provided with an exposure area for exposing both the two to-be-processed surfaces P of the object M to be processed;

[0008] It is characterized by also including:

[0009] A rotating mechanism is arranged at the lower part of the frame;

[0010] A rotating space is formed inside the frame for the clamping mechanism to rotate. The rotating mechanism is connected to the clamping mechanism and can drive the clamping mechanism to rotate around the second axis Y of the clamping mechanism, so that the clamping mechanism switches between the first station a and the second station b. A preset angle α is formed between the second axis Y and the first axis X. The first station a and the second station b are respectively used for processing two surfaces P to be processed of the object M to be processed.

[0011] In order to solve the second technical problem, preferably, the rotating mechanism includes a driving source fixedly connected to the lower part of the frame, the rotating space is formed between the driving source and the clamping mechanism, the rotating mechanism also includes a transmission member connected to the driving source, the transmission member is connected to the first driven shaft of the clamping mechanism, the axis of the first driven shaft forms the second axis Y, thereby driving the clamping mechanism to rotate around the second axis Y under the drive of the driving source. By additionally arranging a driving source capable of driving the clamping mechanism to rotate in the locking clamp, the clamping mechanism can be driven to rotate and switch between the first station a and the second station b. However, if a driving source is arranged on the side of the clamping mechanism to directly drive the clamping mechanism to rotate, it is easy to cause the overall length of the locking clamp to be relatively long. If a driving source for driving the clamping mechanism to rotate is arranged below the clamping mechanism, the overall length of the locking clamp can be prevented from being too long. However, due to the close distance between the clamping mechanism and the driving source, there may be insufficient space, resulting in interference between the clamping mechanism and the driving source during rotation. Therefore, a rotating space for the clamping mechanism to rotate is arranged between the driving source and the clamping mechanism to avoid interference between the clamping mechanism and the driving source during rotation around the second axis Y.

[0012] Furthermore, in order to transmit the power outputted by the driving source to the first driven shaft, preferably, the driving source has a power output shaft parallel to the first driven shaft, the power output shaft partially protrudes from the frame along the length direction to form a driving part, and correspondingly, the first driven shaft partially protrudes from the frame along the length direction to form a driven part, and the driven part and the driving part are located on the same side of the frame and are connected by power through the transmission member. The driven part and the driving part are arranged on the same side of the frame and parallel to each other in order to facilitate the transmission of the rotational power provided by the driving source to the clamping mechanism through the transmission member.

[0013] Further design, considering that there is a rotation space between the driving source and the clamping mechanism, the driving source is relatively far away from the clamping mechanism. In order to facilitate the transmission of power over a large distance, preferably, the transmission member is a transmission belt D, and an adjustment member is provided on the frame body adjacent to the belt surface of the transmission belt D. The adjustment member is in contact with the belt surface of the transmission belt D, and the adjustment member can approach or move away from the belt surface of the transmission belt D to adjust the transmission capacity of the transmission belt D. Such design is based on the consideration that in the case where the driving source is relatively far away from the clamping mechanism, it is relatively more appropriate to use the transmission belt D as the transmission member. For example, if a gear is used as the transmission member, the gear will need to have a relatively large volume and occupy additional space; in addition, the selection of the transmission belt D as the transmission member is also convenient for adjusting the transmission capacity of the transmission belt D through adjustment members such as a tensioning wheel when, for example, the speed of the driving source cannot be adjusted, so as to adjust the speed of the clamping mechanism to a certain extent.

[0014] In order to enable the adjusting member to approach or move away from the belt surface of the transmission belt D, preferably, the adjusting member is cylindrical, and a U-shaped hole penetrating the adjusting member is provided in the axial direction on the adjusting member. Correspondingly, a mounting hole matching the U-shaped hole is provided on the frame, so that the adjusting member can approach or move away from the belt surface of the transmission belt D. The U-shaped hole is provided on the adjusting member, so that the adjusting member has a certain movement space along the length direction of the U-shaped hole relative to the mounting hole on the frame, so that the adjusting member can approach or move away from the belt surface of the transmission belt D to adjust the tension of the transmission belt D, thereby adjusting the transmission capacity of the transmission belt D.

[0015] In order to detect whether the clamping mechanism has rotated to the first station a and the second station b, preferably, the clamping mechanism is also connected to a detection mechanism capable of detecting the station status of the clamping mechanism, the detection mechanism includes a detection member capable of rotating with the clamping mechanism and a sensor for sensing the detection member, and when the clamping mechanism is located at the first station a and the second station b, the sensor can sense the detection member.

[0016] Furthermore, in order to enable the detection member to rotate with the clamping mechanism, preferably, the clamping mechanism also includes a second driven shaft coaxially arranged with the first driven shaft and located on the other side of the clamping mechanism, and the detection member is fixedly connected to the second driven shaft to rotate with the second driven shaft.

[0017] Further design, in order to realize that when the clamping mechanism is located at the first station a and the second station b, the sensor can sense the detection member, preferably, the detection member includes a base end fixedly connected to the second driven shaft, and the detection member extends toward the sensor to form a first end capable of shielding the sensor, and when the clamping mechanism is located at the first station a, the first end can shield the sensor, and similarly, the detection member also extends to form a second end corresponding to the second station b. The sensor can be selected from, for example, a photoelectric beam sensor, and can be sensed by the sensor when the detection member shields the sensing part of the sensor.

[0018] In order to prevent the external environment from interfering with the detection mechanism, preferably, a protective cover is further provided on the frame, and a storage space capable of accommodating the sensor and at least part of the detection member is formed inside the protective cover, and the first end and the second end of the detection member can be rotated in the storage space. Such a design is made in consideration of the fact that the sensor is easily affected by external dust, debris, etc., and therefore, the protective cover needs to be provided to accommodate the sensor therein to avoid interference from the external environment, but the storage space formed by the protective cover needs to be sufficient for the first end and the second end of the detection member to rotate therein.

[0019] Compared with the prior art, the advantages of the utility model are:

[0020] 1. By providing a rotating mechanism connected to the clamping mechanism on the frame, the clamping mechanism can not only rotate around the first axis X of the mounting shaft, but also rotate around the second axis Y and switch between the first station a and the second station b, so that the locking fixture not only has a relatively strong ability to process free space surfaces, but also can meet the requirements of double-sided processing of diamonds;

[0021] 2. The locking clamp is provided with a rotating mechanism for driving the clamping mechanism to rotate below the clamping mechanism, and a rotating space for the clamping mechanism to rotate is formed between the driving source and the clamping mechanism, so that the locking clamp can meet the requirement of being able to drive the clamping mechanism without relying on processing equipment, while maintaining a relatively short overall length and not causing interference between the clamping mechanism and the driving source. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of the locking clamp in Example 1 of the utility model;

[0023] Figure 2 This is a schematic diagram of the exploded structure of the locking clamp in Example 1 of the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the locking clamp in Example 1 of the utility model from a front view perspective;

[0025] Figure 4 This is a schematic diagram of the structure of the locking clamp in Example 1 of the utility model from a left perspective;

[0026] Figure 5 This is a schematic diagram of the structure of the clamping mechanism and the detection mechanism in Example 1 of the utility model;

[0027] Figure 6 This is a schematic diagram of the structure of the protective cover, the detection mechanism and the second driven shaft in Example 1 of the utility model;

[0028] Figure 7 This is a schematic diagram of the state of the locking clamp in Example 1 of the utility model when the clamping mechanism is located at the first working position a;

[0029] Figure 8 This is a schematic diagram of the state of the locking clamp in Example 1 of the utility model when the clamping mechanism is in a rotating state;

[0030] Fig. 9 It is a schematic diagram of another angle of the state of the locking clamp in Example 1 of the utility model when the clamping mechanism is in a rotating state;

[0031] Fig.10 This is a schematic diagram of the state of the locking clamp in Example 1 of the utility model when the clamping mechanism is located at the second station b;

[0032] Fig.11 This is a schematic diagram of the structure of the locking clamp in Example 2 of the utility model. DETAILED DESCRIPTION

[0033] The present invention is further described in detail below in conjunction with specific embodiments.

[0034] Example 1

[0035] like Figures 1 to 6As shown, it is a preferred embodiment of the utility model. The locking clamp for diamond processing in this embodiment includes a frame 1 and a clamping mechanism 2 arranged on the upper part of the frame 1. A mounting shaft 11 for attaching to a processing device is provided on one side of the frame 1. The mounting shaft 11 of the locking clamp in this embodiment can be added to a five-axis machining center, such as the five-axis machining center mentioned in the background technology. The frame 1 can rotate around the first axis X of the mounting shaft 11 under the drive of the processing equipment. Since the processing equipment is a commonly used equipment, it will not be described and marked in detail. The clamping mechanism 2 is used to clamp the object M to be processed. The clamping mechanism 2 is provided with an exposure area 21 in which both the two surfaces P to be processed of the object M to be processed are exposed. For the convenience of distinction, the two surfaces P to be processed are named as the first surface P' to be processed and the second surface P'' to be processed in this embodiment. A rotating space 12 for the clamping mechanism 2 to rotate is formed inside the frame 1 in this embodiment, and a rotating mechanism 3 connected to the clamping mechanism 2 is also provided at the lower part of the frame 1. The rotating mechanism 3 can drive the clamping mechanism 2 to rotate around the second axis Y of the clamping mechanism 2, so that the clamping mechanism 2 switches between the first station a and the second station b. A preset angle α is formed between the second axis Y and the first axis X. The first station a and the second station b are used for processing the first surface P' to be processed and the second surface P'' to be processed of the object M to be processed, respectively. The first axis X is parallel to the second axis Y in this embodiment, that is, the preset angle α is 0°.

[0036] Specifically, Figure 2 As shown, in order to drive the clamping mechanism 2 to rotate, the rotating mechanism 3 includes a driving source 31 fixedly connected to the lower part of the frame 1, see Figure 3A rotating space 12 is formed between the driving source 31 and the clamping mechanism 2. The rotating mechanism 3 also includes a transmission member 32 connected to the driving source 31. The transmission member 32 is connected to the first driven shaft 23 of the clamping mechanism 2. The axis of the first driven shaft 22 forms a second axis Y, thereby driving the clamping mechanism 2 to rotate around the second axis Y under the drive of the driving source 31. By additionally providing a driving source 31 capable of driving the clamping mechanism 2 to rotate in the locking clamp, the clamping mechanism 2 can be driven to rotate and switch between the first station a and the second station b. However, if the driving source 31 is provided on the side of the clamping mechanism 2 to directly drive the clamping mechanism 2 to rotate, it is easy to cause the overall length of the locking clamp to be relatively long. If the driving source 31 for driving the clamping mechanism 2 to rotate is provided below the clamping mechanism 2, the overall length of the locking clamp can be prevented from being too long. However, due to the short distance between the clamping mechanism 2 and the driving source 31, there may be insufficient space, resulting in the situation that the clamping mechanism 2 interferes with the driving source 31 during the rotation process. Therefore, a rotating space 12 capable of rotating the clamping mechanism 2 is provided between the driving source 31 and the clamping mechanism 2 to avoid the clamping mechanism 2 interfering with the driving source 31 during the rotation process around the second axis Y. The driving source 31 in this embodiment is a rotary motor, so the rotation speed of the clamping mechanism 2 can be adjusted to a certain extent by adjusting the output speed of the driving source 31. Further, in order to transmit the power output by the driving source 31 to the first driven shaft 22, the driving source 31 in this embodiment has a power output shaft 311 parallel to the first driven shaft 22, the power output shaft 311 partially protrudes from the frame 1 along the length direction to form a driving portion 312, and correspondingly, the first driven shaft 22 partially protrudes from the frame 1 along the length direction to form a driven portion 221, and the driven portion 221 and the driving portion 312 are located on the same side of the frame 1 and are connected by power through the transmission member 32. The driven portion 221 and the driving portion 312 are arranged on the same side of the frame 1 and are parallel to each other, so as to facilitate the transmission member 32 to transmit the rotational power provided by the driving source 31 to the clamping mechanism 2.

[0037] Considering that a rotating space 12 is formed between the driving source 31 and the clamping mechanism 2, the driving source 31 is relatively far away from the clamping mechanism 2. In order to facilitate the transmission of power over a large distance, see Figure 4, the transmission member 32 in this embodiment is a transmission belt D, and an adjusting member 33 is provided on the frame 1 adjacent to the belt surface of the transmission belt D. When the adjusting member 33 contacts the belt surface of the transmission belt D, the adjusting member 33 can approach or move away from the belt surface of the transmission belt D to adjust the transmission capacity of the transmission belt D. Such a design is based on the consideration that when the distance between the driving source 31 and the clamping mechanism 2 is relatively large, it is relatively more appropriate to use the transmission belt D as the transmission member 32. For example, if a gear is used as the transmission member 32, the gear will need to have a relatively large volume and occupy additional space. In addition, the selection of the transmission belt D as the transmission member 32 is also convenient for adjusting the transmission capacity of the transmission belt D through the adjusting member 33, thereby adjusting the rotation speed of the clamping mechanism 2 to a certain extent. The adjusting member 33 in this embodiment is cylindrical, and a U-shaped hole penetrating the adjusting member 41 is provided on the adjusting member 41 along the axial direction. Correspondingly, a mounting hole 13 adapted to the U-shaped hole is provided on the frame 1, so that the adjusting member 33 can approach or move away from the belt surface of the transmission belt D. A U-shaped hole is provided on the adjusting member 33, so that the adjusting member 33 has a certain movement space along the length direction of the U-shaped hole 331 relative to the mounting hole 13 on the frame 1, so that the adjusting member 33 can be close to or away from the belt surface of the transmission belt D to adjust the tension of the transmission belt D, thereby adjusting the transmission capacity of the transmission belt D. In addition, the adjusting member 33 can also pre-tighten the transmission belt D.

[0038] In order to detect whether the clamping mechanism 2 has been rotated to the first station a and the second station b, see Figure 5The clamping mechanism 2 is also connected to a detection mechanism 4 capable of detecting the station state of the clamping mechanism 2. The detection mechanism 4 includes a detection member 41 capable of rotating with the clamping mechanism 2 and a sensor 42 for sensing the detection member 41. When the clamping mechanism 2 is located at the first station a and the second station b, the sensor 42 can sense the detection member 41. In order to realize that the detection member 41 can rotate with the clamping mechanism 2, the clamping mechanism 2 in this embodiment also includes a second driven shaft 23 coaxially arranged with the first driven shaft 22 and located on the other side of the clamping mechanism 2. The detection member 41 is fixedly connected to the second driven shaft 23 to rotate with the second driven shaft 23. The detection member 41 in this embodiment includes a base end 411 fixedly connected to the second driven shaft 23. The detection member 41 extends toward the sensor 42 to form a first end 412 capable of shielding the sensor 42. When the clamping mechanism 2 is located at the first station a, the first end 412 can shield the sensor 42. Similarly, the detection member 41 also extends to form a second end 413 corresponding to the second station b. The sensor 42 in this embodiment is a photoelectric counter-radiation sensor, which can be sensed by the sensor 42 when the detection member 41 blocks the sensing part of the sensor 42. In addition, an encoder that cooperates with the sensor 42 and the driving source 31 can also be provided. When the detection member 41 happens to block the sensor 42, the data is transmitted back to the encoder to control the rotation angle, thereby reducing the error of automatic rotation. In order to prevent the external environment from interfering with the detection mechanism 4, a protective cover 5 is also provided on the frame 1. A receiving space 51 that can accommodate the sensor 42 and at least part of the detection member 41 is formed inside the protective cover 5. The receiving space 51 can be used for the first end 412 and the second end 413 of the detection member 41 to rotate. Such a design takes into account that the sensor 42 is easily affected by external dust, debris, etc., so it is necessary to set the protective cover 5 to accommodate the sensor 42 therein to avoid interference from the external environment.

[0039] The use process of the equipment for processing the trimmer provided in this embodiment is as follows:

[0040] like Figure 7 As shown, at this time, the clamping mechanism 2 of the locking fixture is located at the first station a, the first end 412 of the detection member 41 blocks the sensor 42, and the first to-be-processed surface P' of the to-be-processed object M is exposed upward through the exposure area 21 for easy machine tool processing; see Figure 8 After the first surface P' to be processed is processed, the rotating mechanism 3 drives the clamping mechanism 2 to rotate in the rotating space 12. At this time, the clamping mechanism 2 is in a rotating state, the detection member 41 rotates with the second driven shaft 23, and the detection member 41 does not block the sensor 42. Fig. 9 , the rotation space 12 is sufficient for the clamping mechanism 2 to rotate; see Fig.10At this time, the clamping mechanism 2 of the locking fixture rotates to the second station b, the second end 413 of the detection member 41 blocks the sensor 42, the rotating mechanism 3 stops driving the clamping mechanism 2 to rotate, and the second processing surface P″ of the object M to be processed is exposed upward through the exposure area 21 for easy machine tool processing.

[0041] Example 2

[0042] like Fig.11 As shown, the structure is basically the same as that of Example 1, except that the first axis X and the first axis Y in this embodiment are in a vertical relationship in space, that is, the preset angle α is 90°. After the locking fixture in this embodiment is installed on the processing equipment, the rotation axis of the clamping mechanism 2 is closer to the A axis and C axis of the five-axis machining center in the background technology.

Claims

1. A locking fixture for diamond processing, comprising: A frame (1), one side of the frame (1) is provided with a mounting shaft (11) for attaching to a processing device, and the frame (1) is capable of rotating around a first axis (X) of the mounting shaft (11) when driven by the processing device; A clamping mechanism (2) is arranged on the upper part of the frame (1) and is used to clamp the object (M) to be processed. The clamping mechanism (2) is provided with an exposure area (21) for exposing both the two surfaces (P) to be processed of the object (M) to be processed. It is characterized in that Also included are: A rotating mechanism (3) is arranged at the lower part of the frame (1); The frame (1) has a rotating space (12) formed inside for the clamping mechanism (2) to rotate. The rotating mechanism (3) is connected to the clamping mechanism (2) and can drive the clamping mechanism (2) to rotate around a second axis (Y) of the clamping mechanism (2), thereby switching the clamping mechanism (2) between a first station (a) and a second station (b). A preset angle (α) is formed between the second axis (Y) and the first axis (X). The first station (a) and the second station (b) are respectively used for processing two surfaces (P) to be processed of the object (M) to be processed.

2. The locking clamp according to claim 1, characterized in that: The rotating mechanism (3) includes a driving source (31) fixedly connected to the lower part of the frame (1), and the rotating space (12) is formed between the driving source (31) and the clamping mechanism (2). The rotating mechanism (3) also includes a transmission member (32) connected to the driving source (31), and the transmission member (32) is connected to the first driven shaft (22) of the clamping mechanism (2), and the axis of the first driven shaft (22) forms the second axis (Y), so that the clamping mechanism (2) is driven to rotate around the second axis (Y) under the drive of the driving source (31).

3. The locking clamp according to claim 2, characterized in that: The driving source (31) has a power output shaft (311) parallel to the first driven shaft (22); the power output shaft (311) partially protrudes from the frame (1) along the length direction to form a driving portion (312); correspondingly, the first driven shaft (22) partially protrudes from the frame (1) along the length direction to form a driven portion (221); the driven portion (221) and the driving portion (312) are located on the same side of the frame (1) and are connected in power via the transmission member (32).

4. The locking clamp according to claim 3, characterized in that: The transmission member (32) is a transmission belt (D), and an adjusting member (33) is arranged on the frame (1) adjacent to the belt surface of the transmission belt (D). The adjusting member (33) is in contact with the belt surface of the transmission belt (D), and the adjusting member (33) can be moved closer to or farther away from the belt surface of the transmission belt (D) to adjust the transmission capacity of the transmission belt (D).

5. The locking clamp according to claim 4, characterized in that: The adjusting member (33) is cylindrical and has a U-shaped hole (331) penetrating the adjusting member (33) in the axial direction. Correspondingly, the frame (1) is provided with a mounting hole (13) matched with the U-shaped hole (331), so that the adjusting member (33) can be moved close to or away from the belt surface of the transmission belt (D).

6. The locking clamp according to any one of claims 2 to 5, characterized in that: The clamping mechanism (2) is also connected to a detection mechanism (4) capable of detecting the working position status of the clamping mechanism (2); the detection mechanism (4) comprises a detection member (41) capable of rotating with the clamping mechanism (2) and a sensor (42) for sensing the detection member (41); when the clamping mechanism (2) is located at the first working position (a) and the second working position (b), the sensor (42) is capable of sensing the detection member (41).

7. The locking clamp according to claim 6, characterized in that: The clamping mechanism (2) further comprises a second driven shaft (23) which is coaxially arranged with the first driven shaft (22) and located on the other side of the clamping mechanism (2), and the detection member (41) is fixedly connected to the second driven shaft (23) so as to rotate with the second driven shaft (23).

8. The locking clamp according to claim 7, characterized in that: The detection member (41) includes a base end (411) fixedly connected to the second driven shaft (23); the detection member (41) extends toward the sensor (42) to form a first end portion (412) capable of shielding the sensor (42); when the clamping mechanism (2) is located at the first station (a), the first end portion (412) is capable of shielding the sensor (42); similarly, the detection member (41) also extends to form a second end portion (413) corresponding to the second station (b).

9. The locking clamp according to claim 8, characterized in that: The frame (1) is also provided with a protective cover (5), and a receiving space (51) capable of receiving the sensor (42) and at least part of the detection member (41) is formed inside the protective cover (5), and the receiving space (51) is capable of allowing the first end (412) and the second end (413) of the detection member (41) to rotate.

Images