Clamping jig convenient to machine

Abstract

The utility model provides a clamping jig convenient to machine, which is used for positioning and clamping a workpiece and comprises a base, a guide pin, a plurality of positioning seats and a main positioning column. The guide pin is arranged on the base, and an external expansion pull-down type guide pin is adopted; the plurality of positioning seats are arranged on the base; the main positioning column is arranged on the base; and the auxiliary positioning column is arranged on one of the positioning seats. According to the clamping jig, the workpiece can be positioned and clamped by arranging the external expansion pull-down type guide pin to be matched with the plurality of positioning seats, the main positioning column and the auxiliary positioning column, and only the bottom surface of the workpiece needs to be used during positioning and clamping, so that five surfaces of the workpiece can be machined at one time, and multi-surface machining of the workpiece is met.

Description

Technical Field

[0001] The utility model relates to the technical field of clamping fixtures, in particular to a clamping fixture convenient for processing. Background Art

[0002] Most of the existing fixtures adopt the following two methods when clamping workpieces:

[0003] First, manual clamping is relied on, which is easily affected by human negligence and may not be clamped in place.

[0004] Second, mechanical hand clamping is relied on. When the workpiece is not clamped in place due to other factors, it cannot be judged. Continuing to process the workpiece when it is not clamped in place may cause impact and at the same time result in poor workpiece processing.

[0005] Secondly, the existing fixture positions the workpiece in the following way: positioning through a pin hole, the bottom surface, and the side surface, and clamping in the side direction. The workpiece can only be processed on three surfaces at the same time, and the requirements for the geometric tolerance of each surface are relatively strict and cannot be met.

[0006] In view of this, the inventor has specifically designed a clamping fixture convenient for processing, and this case is thus generated. Content of the Utility Model

[0007] The utility model aims to solve at least one of the technical problems existing in the prior art. For this reason, an object of the utility model is to provide a clamping fixture convenient for processing. By arranging an externally expanding and downward-pulling guiding pin in cooperation with a plurality of positioning seats, a main positioning column, and an auxiliary positioning column, the workpiece can be positioned and clamped. When positioning and clamping, only the bottom surface of the workpiece is used. Therefore, five surfaces of the workpiece can be processed at one time, meeting the multi-surface processing of the workpiece and overcoming the disadvantages brought by the current clamping method.

[0008] A clamping fixture convenient for processing according to the utility model is used for positioning and clamping a workpiece, and includes:

[0009] A base, and the base plays a supporting role;

[0010] A guiding pin, and the guiding pin is arranged on the base and is an externally expanding and downward-pulling guiding pin;

[0011] A plurality of positioning seats, and a plurality of the positioning seats are all arranged on the base;

[0012] A main positioning column, and the main positioning column is arranged on the base;

[0013] An auxiliary positioning column, and the auxiliary positioning column is arranged on one of the positioning seats.

[0014] The clamping fixture of the present utility model can position and clamp the workpiece by setting an externally expanding and downward-pulling alignment pin in combination with several positioning seats, a main positioning column, and an auxiliary positioning column. When positioning and clamping, only the bottom surface of the workpiece is used, so that the five surfaces of the workpiece can be machined at one time, meeting the multi-surface machining requirements of the workpiece.

[0015] In some embodiments of the present utility model, the main positioning column adopts an integral structure, including a first main body portion located on the base, a first positioning portion arranged below the first main body portion and used for cooperating with the base, and a second positioning portion arranged above the first main body portion.

[0016] In some embodiments of the present utility model, the main positioning column adopts a split structure, including a second main body portion arranged on the base and a third positioning portion embedded above the second main body portion.

[0017] In some embodiments of the present utility model, a fourth positioning portion for cooperating with the base is arranged on the lower end surface of the second main body portion, and a first positioning groove for cooperating with the third positioning portion is also arranged on the upper end surface thereof.

[0018] In some embodiments of the present utility model, the auxiliary positioning column is detachably arranged on the positioning seat.

[0019] In some embodiments of the present utility model, a second positioning groove for the auxiliary positioning column to be embedded is arranged on the positioning seat, and the auxiliary positioning column is restricted on the positioning seat by a second fixing member.

[0020] In some embodiments of the present utility model, after the auxiliary positioning column is installed on the positioning seat, a through first through hole is arranged on a part of the side wall outside the positioning seat.

[0021] In some embodiments of the present utility model, the base includes a bottom plate and a mounting plate arranged on the bottom plate, and mounting steps for mounting the positioning seat and the main positioning column are arranged on the mounting plate.

[0022] In some embodiments of the present utility model, detection holes are arranged on several of the positioning seats, and several detection channels communicated with the detection holes are arranged inside the base.

[0023] In some embodiments of the present utility model, the detection channel includes a horizontal channel perpendicular to the central axis of the detection hole and a vertical channel for connecting the detection hole and the horizontal channel. Description of the Drawings

[0024] The drawings described herein are used to provide a further understanding of the present utility model and constitute a part of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model.

[0025] Wherein:

[0026] Figure 1 are the structural schematic diagrams of the clamping fixture of the present utility model Figure 1 ;

[0027] Figure 2 are the structural schematic diagrams of the clamping fixture of the present utility model Figure 2 ;

[0028] Figure 3 are of the present utility model Figure 2 partial enlarged view;

[0029] Figure 4 are the structural schematic diagrams of the main positioning column of the present utility model Figure 1 ;

[0030] Figure 5 are another schematic diagrams of the main positioning column of the present utility model;

[0031] Figure 6 are the structural schematic diagrams of the auxiliary positioning column of the present utility model;

[0032] Figure 7 are the schematic diagrams of the detection channel of the present utility model.

[0033] Label description:

[0034] 10. Base; 11. Bottom plate; 12. Mounting plate; 121. Mounting step; 101. Detection channel; 102. Horizontal channel; 103. Vertical channel; 20. Alignment pin; 30. Positioning seat; 31. Second positioning groove; 32. Second internal thread hole; 33. Detection hole; 40. Main positioning column; 411. First main body part; 412. First positioning part; 413. Second positioning part; 421. Second main body part; 4211. Fourth positioning part; 4212. First positioning groove; 4213. First internal thread hole; 422. Third positioning part; 4221. Second through hole; 50. Auxiliary positioning column; 51. First through hole. Detailed implementation manners

[0035] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0036] Please refer to Figures 1 to 7, is a clamping fixture for easy processing as the best embodiment of the present utility model, used for positioning and clamping a workpiece, including a base 10, a guiding pin 20, a plurality of positioning seats 30, and a main positioning column 40. The base 10 plays a supporting role; the guiding pin 20 is arranged on the base 10 and is an externally expanding and downward-pulling guiding pin 20, which can play a clamping role. The specific model is: ZT3654-D40; at the same time, it can play a more accurate positioning role when paired with the main positioning column 40; a plurality of positioning seats 30 are all arranged on the base 10; the main positioning column 40 is arranged on the base 10; an auxiliary positioning column 50, and the auxiliary positioning column 50 is arranged on a positioning seat 30. The clamping fixture of the present utility model can position and clamp the workpiece by setting the externally expanding and downward-pulling guiding pin 20 in combination with a plurality of positioning seats 30, the main positioning column 40, and the auxiliary positioning column 50. When positioning and clamping, only the bottom surface of the workpiece is used. Therefore, five surfaces of the workpiece can be processed at one time, meeting the multi-surface processing of the workpiece.

[0037] For details, please refer to Figures 1 to 2 , the base 10 includes a bottom plate 11 and a mounting plate 12 arranged on the bottom plate 11. An installation step 121 for installing the positioning seat 30 and the main positioning column 40 is arranged on the mounting plate 12. Among them, the installation step 121 is integrally formed on the mounting plate 12. The mounting plate 12 is locked to the bottom plate 11 by a plurality of bolts, and the guiding pin 20, the positioning seat 30, and the main positioning column 40 are all locked to the installation step 121 by bolts.

[0038] The main positioning column 40 of the present utility model adopts the following two structures:

[0039] For details, please refer to Figure 4 , the main positioning column 40 adopts an integral structure, including a first main body part 411 located on the base 10, a first positioning part 412 arranged below the first main body part 411 and used for cooperating with the base 10, and a second positioning part 413 arranged above the first main body part 411. Among them, the first positioning part 412 is embedded in the installation step 121 of the base 10 to play a positioning role.

[0040] For details, please refer to Figure 5, the main positioning post 40 adopts a split structure, including a second main body part 421 arranged on the base 10 and a third positioning part 422 embedded above the second main body part 421; a fourth positioning part 4211 for cooperating with the base 10 is arranged on the lower end face of the second main body part 421, and the fourth positioning part 4211 is embedded on the installation step 121 of the base 10. A first positioning groove 4212 for cooperating with the third positioning part 422 is also arranged on its upper end face. The lower part of the third positioning part 422 cooperates with the first positioning groove 4212, and the upper part is used for cooperating with the workpiece. The third positioning part 422 is restricted / fixed in the first positioning groove 4212 by a first fixing part. Specifically, the first fixing part can be a bolt. A first internal threaded hole 4213 communicating with the inside of the first positioning groove 4212 is also arranged on the side wall of the second main body part 421. After the first fixing part is screwed with the first internal threaded hole 4213, it abuts against the side wall of the third positioning part 422. And when the first fixing part is loosened, the third positioning part 422 can be removed, which is convenient for replacing the third positioning part 422.

[0041] Among the above, the alignment pin 20, several positioning seats 30, the first main body part 411 and the second main body part 421 are all locked to the installation step 121 of the base 10 by bolts.

[0042] For details, please refer to Figure 3 , the auxiliary positioning post 50 is detachably arranged on the positioning seat 30. A second positioning groove 31 for the auxiliary positioning post 50 to be embedded is arranged on the positioning seat 30, and the auxiliary positioning post 50 is restricted on the positioning seat 30 by a second fixing part. A second internal threaded hole 32 communicating with the second positioning groove 31 is arranged on the side wall of the positioning seat 30 provided with the second positioning groove 31. The second fixing part can be a bolt. The specific fixing and disassembly methods are similar to those of the third positioning part 422. After the auxiliary positioning post 50 is installed on the positioning seat 30, a through first through hole 51 is arranged on a part of the side wall outside the positioning seat 30. By providing the first through hole 51, it is convenient to remove the auxiliary positioning post 50 from the positioning seat 30. At the same time, a second through hole 4221 is also arranged on the third positioning part 422, which is convenient to remove the third positioning part 422 from the second main body part 421. When the auxiliary positioning post 50 or the third positioning part 422 is worn, it can be quickly replaced to avoid being difficult to take out after long-term use.

[0043] For details, please refer to Figure 7 , detection holes 33 are arranged on several positioning seats 30, and several detection channels 101 communicating with the detection holes 33 are arranged inside the base 10. The detection holes 33 penetrate the lower end face and the upper end face of the positioning seat 30. The detection channels 101 include a horizontal channel 102 perpendicular to the central axis of the detection hole 33 and a vertical channel 103 for connecting the detection hole 33 and the horizontal channel 102; the detection channels 101 and the detection holes 33 can detect whether the workpiece is clamped in place, avoid crashing caused by improper clamping, and reduce the processing defect rate.

[0044] The utility model clamping fixture is mainly composed of the following parts: a positioning part, a clamping part and a detection auxiliary part, so as to facilitate positioning and detection of the clamping position; wherein the positioning part mainly includes: four positioning seats 30, a main positioning pin, and an auxiliary positioning pin; the clamping part mainly includes: an external expansion and pull-down guide pin 20; the detection part: a detection hole 33 in the positioning seat 30 and a detection channel 101 in the base 10; the specific working principle is as follows:

[0045] The workpiece pin hole and the main positioning hole are respectively installed with the main positioning column 40, the auxiliary positioning column 50, and the outward expansion and pull-down guide pin 20. The D surface of the workpiece is close to the four positioning seats 30, blocking the detection hole 33. After clamping, the outward expansion and pull-down guide pin 20 expands the outward correction positioning hole C to reduce the error caused by the gap, and at the same time pulls down to clamp the main positioning hole C to clamp the workpiece. The machine determines whether the workpiece is close to the four positioning seats 30 at the same time and whether it is clamped in place by judging the pressure in the air pipe and the size of the air outlet, thereby alarming if the workpiece is not clamped in place.

[0046] To summarize, the clamping fixture of the present invention can position and clamp the workpiece by providing an outward-expanding pull-down guide pin in combination with a number of positioning seats, main positioning columns and auxiliary positioning columns. During positioning and clamping, only the bottom surface of the workpiece is used, so the five surfaces of the workpiece can be processed at one time to meet the needs of multi-sided processing of the workpiece. At the same time, the present invention also provides a detection channel and a detection hole to detect whether the workpiece is clamped in place, avoid collision caused by inadequate clamping, and reduce the processing defect rate.

[0047] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A clamping fixture that is easy to process and is used to position and clamp a workpiece, characterized in that: include: A base, the base plays a supporting role; A guide pin, which is arranged on the base and is an outward expansion and downward pull-down type guide pin; A plurality of positioning seats, wherein the plurality of positioning seats are arranged on the base; A main positioning column, wherein the main positioning column is arranged on the base; An auxiliary positioning column is arranged on the positioning seat.

2. The clamping fixture according to claim 1, characterized in that: The main positioning column adopts an integrated structure, including a first main body portion located on the base, a first positioning portion arranged below the first main body portion and used to cooperate with the base, and a second positioning portion arranged above the first main body portion.

3. The clamping fixture according to claim 1, characterized in that: The main positioning column adopts a split structure, including a second main body portion arranged on the base and a third positioning portion embedded above the second main body portion.

4. The clamping fixture according to claim 3, characterized in that: The lower end surface of the second main body is provided with a fourth positioning portion for cooperating with the base, and the upper end surface thereof is further provided with a first positioning groove for cooperating with the third positioning portion.

5. The clamping fixture according to claim 1, characterized in that: The auxiliary positioning column is detachably arranged on the positioning seat.

6. The clamping fixture according to claim 4, characterized in that: The positioning seat is provided with a second positioning groove for inserting the auxiliary positioning column, and the auxiliary positioning column is restricted on the positioning seat by a second fixing member.

7. The clamping fixture according to claim 1, characterized in that: The auxiliary positioning column is installed after the positioning seat, and a first through hole is provided on a portion of the side wall outside the positioning seat.

8. The clamping fixture according to claim 7, characterized in that: The base comprises a bottom plate and a mounting plate arranged on the bottom plate, and the mounting plate is provided with mounting steps for mounting a positioning seat and a main positioning column.

9. The clamping fixture according to claim 1, characterized in that: A plurality of the positioning seats are provided with detection holes, and a plurality of detection channels connected with the detection holes are provided inside the base.

10. The clamping fixture according to claim 9, characterized in that: The detection channel includes a horizontal channel perpendicular to the central axis of the detection hole and a vertical channel for connecting the detection hole and the horizontal channel.

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