Cnc tool clamp adopting pneumatic fixing structure

Abstract

The utility model relates to the technical field of cnc fixtures, in particular to a cnc tool fixture adopting a pneumatic fixing structure. According to the technical scheme, the pneumatic clamping device is characterized by comprising a rotary table, a reference body, a limiting part and a pneumatic clamp, the reference body is installed on the rotary table, the limiting part is arranged on the reference body, the pneumatic clamp is installed on the reference body and is adjacent to the limiting part, a workpiece is placed in the limiting part, the pneumatic clamp fixes the workpiece in the limiting part, and the stability of the workpiece during machining is effectively improved; and therefore, the machining precision of the workpiece can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of CNC fixtures, and in particular to a CNC tooling fixture with a pneumatic fixing structure. Background Art

[0002] CNC fixture is a medium of stability and positioning. It is a widely used workpiece fixture, mainly used to properly fix, support or mount workpieces on CNC machine tools. CNC fixture is an important tool to ensure consistency and interchangeability in the manufacturing process, which promotes the smooth progress of the manufacturing process.

[0003] Currently, the CNC fixture mainly includes a turntable and a reference body installed on the turntable. The fixture is usually located on the reference body. The fixture clamps the workpiece to facilitate CNC processing.

[0004] With regard to the above-mentioned related technologies, the workpiece is fixed by clamping it with a fixture. However, clamping the workpiece with a fixture is still unstable. The workpiece may shift slightly during processing, resulting in reduced workpiece accuracy. Therefore, there is still much room for improvement. Utility Model Content

[0005] In order to improve the machining accuracy of workpieces, the present application provides a CNC tooling fixture with a pneumatic fixing structure.

[0006] The CNC fixture with a pneumatic fixing structure provided in this application adopts the following technical solution:

[0007] A CNC tooling fixture with a pneumatic fixing structure includes a turntable and a reference body, wherein the reference body is arranged on the turntable, and the turntable is used to drive the reference body to rotate. It also includes a limiting portion, which is arranged on the reference body, and a workpiece can be accommodated in the limiting portion; and a pneumatic fixture, which is arranged on the reference body, adjacent to the limiting portion, and is used to fix the workpiece.

[0008] Through the above technical solution, the workpiece is placed in the limiting part, the limiting part limits the workpiece, and the pneumatic clamp fixes the workpiece in the limiting part. Through the limitation of the limiting part and the fixation of the pneumatic clamp, the stability of the workpiece during processing is effectively improved, which helps to improve the processing accuracy of the workpiece.

[0009] Preferably, the limiting portion includes a positioning groove, which is provided on the reference body and matches the bottom contour of the workpiece for positioning the workpiece; and a baffle, which is fixedly arranged on the reference body, adjacent to the positioning groove and abuts against the side wall of the workpiece.

[0010] Through the above technical solution, the workpiece is placed in the positioning groove, the positioning groove limits the bottom of the workpiece, and the baffle abuts against the side wall of the workpiece to further limit the workpiece body. Through double positioning by the positioning groove and the baffle, the stability of the workpiece placement is greatly improved.

[0011] Preferably, the pneumatic clamp includes a pneumatic element, which is arranged on the reference body and is used to output power; a lifting member, which is arranged in the reference body and fixedly connected to the pneumatic element, and the lifting member has a first abutment surface; a translation member, which is slidably arranged on the reference body and is adjacent to the lifting member, and the translation member is provided with a second abutment surface, and the second abutment surface abuts against the first abutment surface; and an elastic member, which is fixedly arranged on the reference body and fixedly connected to the translation member.

[0012] Through the above technical solution, the pneumatic element drives the lifting member to move in the vertical direction, the first contact surface abuts and slides with the second contact surface, thereby pushing the translation member to move in the horizontal direction, and the elastic member pulls the translation member to reset. The overall structure is simple and compact.

[0013] Preferably, the limiting parts may be provided in multiple groups.

[0014] Through the above technical solution, multiple groups of limit parts are set, that is, multiple workstations are provided, and multiple workpieces can be processed at one time, thereby improving the processing efficiency of the workpieces.

[0015] Preferably, the lifting member is provided with a plurality of groups of first abutment surfaces, and the number of the translation members is consistent with the number of the first abutment surfaces.

[0016] Through the above technical solution, a group of first abutting surfaces and a group of second abutting surfaces form a clamping position, and a group of lifting members are provided with multiple groups of first abutting surfaces and cooperate with multiple groups of translation members to form multiple clamping positions, which helps to improve the compactness of the structure.

[0017] Preferably, the lifting member is provided with two first abutting surfaces, the two first abutting surfaces are arranged opposite to each other, the translation member is provided with two groups, the two groups of translation members are arranged opposite to each other and are located on both sides of the lifting member, and the first first abutting surface abuts against a group of the second abutting surfaces.

[0018] Through the above technical solution, one set of lifting parts cooperates with two sets of translation parts to form two clamping positions, thereby improving the practicality of the pneumatic clamp and saving costs.

[0019] Preferably, the pneumatic clamp is located between two groups of the limiting portions, and the two groups of the limiting portions share one group of the pneumatic clamp.

[0020] Through the above technical solution, the workpiece is placed in a position convenient for CNC processing, which is located on both sides of the pneumatic clamp, and a group of pneumatic clamps fix the workpieces on both sides at the same time, thereby improving the functionality of the pneumatic clamp.

[0021] Preferably, a drainage groove is provided on the reference body, and the drainage groove is communicated with the positioning groove.

[0022] Through the above technical solution, the drainage groove guides the cooling water in the positioning groove to flow out, thereby reducing the influence of the water in the positioning groove on the workpiece limitation.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. The workpiece is placed in the limiting part, which limits the workpiece, and the pneumatic clamp fixes the workpiece in the limiting part. The limiting part and the fixation of the pneumatic clamp effectively improve the stability of the workpiece during processing, thereby helping to improve the processing accuracy of the workpiece.

[0025] 2. A set of first abutting surfaces and a set of second abutting surfaces form a clamping position, and a set of lifting members is provided with multiple sets of first abutting surfaces and cooperates with multiple sets of translation members to form multiple clamping positions, which helps to improve the compactness of the structure.

[0026] 3. The workpiece is placed in a position that is convenient for CNC processing, and is located on both sides of the pneumatic clamp, and a set of pneumatic clamps fix the workpieces on both sides at the same time, improving the functionality of the pneumatic clamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of a CNC tooling fixture using a pneumatic fixing structure in a preferred embodiment of the present application.

[0028] Figure 2 It is a cross-sectional view of a CNC tooling fixture using a pneumatic fixing structure in a preferred embodiment of the present application.

[0029] Figure 3 It is a cross-sectional view from another perspective of a CNC tooling fixture using a pneumatic fixing structure in a preferred embodiment of the present application.

[0030] Figure 4 yes Figure 3 Enlarged view of part A.

[0031] Explanation of the accompanying drawings: 1. turntable; 2. reference body; 3. limit part; 31. positioning groove; 32. stop bar; 4. pneumatic clamp; 41. pneumatic element; 42. lifting member; 43. translation member; 44. elastic member; 441. spring seat; 442. spring; 5. drainage groove; 6. first abutting surface; 7. second abutting surface. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-4 This application is described in further detail.

[0033] The embodiment of the present application discloses a CNC fixture with a pneumatic fixing structure. Figure 1 The tooling fixture includes a turntable 1, a reference body 2, a limit portion 3 and a pneumatic clamp 4. The reference body 2 is installed on the turntable 1, the limit portion 3 is opened on the reference body 2, the pneumatic clamp 4 is installed on the reference body 2 and adjacent to the limit portion 3, the workpiece is placed in the limit portion 3, and the pneumatic clamp 4 fixes the workpiece in the limit portion 3.

[0034] refer to Figure 1 and Figure 2 , a built-in power source is provided in the turntable 1, and the reference body 2 is installed on the turntable 1. The turntable 1 drives the reference body 2 to rotate and cooperates with the CNC to process the workpiece. The CNC has a large impact on the workpiece when processing the workpiece. If the workpiece is not fixed stably, the workpiece is prone to movement, resulting in low precision of the workpiece. Therefore, a limiting portion 3 is provided on the reference body 2 to limit the workpiece. Specifically, the limiting portion 3 includes a positioning groove 31 and a stop bar 32, wherein the positioning groove 31 is formed by being recessed downward from the top surface of the reference body 2 and adapted to the bottom contour of the workpiece. The workpiece is placed in the positioning groove 31 to position the bottom of the workpiece; the stop bar 32 is fixedly installed on the reference body 2, connected integrally with the reference body 2, and adjacent to the positioning groove 31, and abuts against the side wall of the workpiece in the positioning groove 31. In this embodiment, two stop bars 32 are provided, which are located on both sides of the positioning groove 31. The two stop bars 32 abut against the workpiece at the same time, further limiting the workpiece body, which helps to improve the stability of the workpiece placement.

[0035] refer to Figure 2 and Figure 3 When processing the workpiece, the CNC continuously sprays water on the workpiece to cool it down, and the cooled water is easily accumulated in the positioning groove 31. Therefore, a drainage groove 5 is opened on the reference body 2, and the drainage groove 5 is connected with the positioning groove 31. After the workpiece is processed, the water in the positioning groove 31 can flow out from the drainage groove 5; it should be noted that the limiting part 3 can be provided with multiple groups, such as two groups, three groups or more than three groups. In this embodiment, the limiting part 3 is provided with four groups, and the four groups of limiting parts 3 are arranged at intervals along the reference body 2. Four workpieces can be placed at a time, and the CNC processes four workpieces at the same time, thereby improving the delivery efficiency of the workpieces.

[0036] refer to Figure 3After the position of the workpiece is determined, the workpiece can be clamped and processed. Specifically, the pneumatic clamp 4 includes a pneumatic element 41, a lifting element 42, a translation element 43 and an elastic element 44. The pneumatic element 41 is installed on the reference body 2, the lifting element 42 is fixedly connected to the pneumatic element 41, the translation element 43 is slidably installed on the reference body 2 and abuts against the lifting element 42, and the elastic element 44 is fixedly installed on the reference body 2 and fixedly connected to the translation element 43; in this embodiment, the pneumatic element 41 is a telescopic cylinder, which is vertically arranged and fixedly installed on the reference body 2 and is located between the two sets of limit parts 3. The telescopic rod of the telescopic cylinder passes through the reference body 2 and can be extended vertically upward to output power.

[0037] refer to Figure 3 and Figure 4 The lifting member 42 is a block-shaped structure, which is fixedly mounted on the telescopic rod of the telescopic cylinder. A first abutment surface 6 is provided on the lifting member 42. The first abutment surface 6 is an inclined surface, and the first abutment surface 6 can be provided in multiple groups, such as two groups, three groups or more than three groups. In the present embodiment, two groups of first abutment surfaces 6 are provided on the lifting member 42, and the two groups of first abutment surfaces 6 are symmetrically arranged; correspondingly, the number of translation members 43 is consistent with the number of first abutment surfaces 6, and two groups are also provided. The two groups of translation members 43 are arranged opposite to each other, and the second abutment surfaces 7 on the two groups of translation members 43 are opposite to each other. A slide groove is provided at the bottom of the two groups of translation members 43, and the reference body 2 A convex strip is convexly provided on the upper part, and two groups of translation members 43 are slidably installed on the reference body 2 through the sliding cooperation of the slide groove and the convex strip. A group of first abutting surfaces 6 and a group of second abutting surfaces 7 abut against each other, and the first abutting surface 6 is parallel to the second abutting surface 7 when abutting. When the lifting member 42 is driven by the telescopic cylinder to move vertically downward, the force acting on the second abutting surface 7 has a horizontal component, so the translation member 43 is pushed open horizontally, close to the workpiece in the limiting part 3, and clamps the workpiece. A group of lifting members 42 cooperates with the two groups of translation members 43 and is located between the two groups of limiting parts 3 to form two relative clamping positions, thereby improving the compactness of the structure.

[0038] refer to Figure 3 and Figure 4In order to make the translation member 43 reset as the lifting member rises after being pushed open horizontally, an elastic member 44 is provided. Specifically, the elastic member 44 includes a spring 442 seat 441 and a spring 442, wherein the spring 442 seat 441 is fixedly mounted on the reference body 2, one end of the spring 442 is fixedly mounted on the spring 442 seat 441, and the other end is fixedly mounted on the translation member 43, and the spring 442 is in a stretched state, which is equivalent to pulling the translation member 43 to reset; since one group of lifting members 42 cooperates with two groups of translation members 43, two groups of elastic members 44 are also required to be provided, and the functions of the spring 442 seat 441 are the same, both of which are used to fix the spring 442, and the two groups of springs 442 are arranged opposite to each other, so a group of spring 442 seats 441 can be shared, and the two groups of springs 442 are fixedly mounted on the opposite side surfaces of the spring 442 seat 441, and one group of springs 442 is fixedly connected to the corresponding group of translation members 43.

[0039] It should be particularly noted that since there are four groups of limiting parts 3, two groups of pneumatic clamps 4 are correspondingly provided. One group of pneumatic clamps 4 is located between the two groups of limiting parts 3. One group of pneumatic clamps 4 can provide two groups of clamping positions, which just matches the four groups of limiting parts 3.

[0040] refer to Figure 3 and Figure 4 When the telescopic rod of the telescopic cylinder is in the extended state, the lifting member 42 is also lifted up along with the telescopic rod of the telescopic cylinder. At this time, the side wall of the translation member 43 is also in contact with the side wall of the lifting member 42, and the translation member 43 is not pushed out horizontally, and the workpiece in the limit portion 3 is in the unlocked state; when the telescopic rod of the telescopic cylinder is retracted, the lifting member 42 follows it to descend. At this time, the translation member 43 is pushed horizontally away from the lifting member 42 and approaches the workpiece in the limit portion 3, thereby tightly fixing the firmware.

[0041] The implementation principle of a CNC tooling fixture with a pneumatic fixing structure in an embodiment of the present application is as follows: a reference body 2 is installed on a turntable 1, a limiting portion 3 is provided on the reference body 2, a workpiece is placed in the limiting portion 3 for mechanical limiting, a pneumatic clamp 4 is installed on the reference body 2, adjacent to the interior of the afternoon, and the pneumatic clamp 4 is pushed out to fix the workpiece in the limiting portion 3.

[0042] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A CNC fixture with a pneumatic fixed structure, comprising a turntable (1) and a reference body (2), wherein the reference body (2) is arranged on the turntable (1), and the turntable (1) is used to drive the reference body (2) to rotate, characterized in that: Also includes A limiting portion (3) is provided on the reference body (2), and a workpiece can be accommodated in the limiting portion (3); and a pneumatic clamp (4), which is arranged on the reference body (2) and adjacent to the limiting portion (3) and is used to fix the workpiece.

2. According to claim 1, a CNC fixture with a pneumatic fixing structure is characterized in that: The limiting part (3) comprises A positioning groove (31) is provided on the reference body (2), adapted to the bottom contour of the workpiece, and used for positioning the workpiece; and a blocking bar (32) fixedly arranged on the reference body (2), adjacent to the positioning groove (31) and abutting against the side wall of the workpiece.

3. The CNC fixture with a pneumatic fixing structure according to claim 1 is characterized in that: The pneumatic clamp (4) comprises A pneumatic element (41), arranged on the reference body (2) and used for outputting power; A lifting member (42) is arranged in the reference body (2) and is fixedly connected to the pneumatic element (41); the lifting member (42) has a first abutting surface (6); A translation member (43) is slidably disposed on the reference body (2) and is adjacent to the lifting member (42); a second abutting surface (7) is provided on the translation member (43), and the second abutting surface (7) abuts against the first abutting surface (6); and an elastic member (44) which is fixedly arranged on the reference body (2) and fixedly connected to the translation member (43).

4. The CNC fixture with a pneumatic fixing structure according to claim 2 is characterized in that: The limiting parts (3) may be provided in multiple groups.

5. The CNC fixture with a pneumatic fixing structure according to claim 3 is characterized in that: The lifting member (42) is provided with a plurality of groups of first abutment surfaces (6), and the number of the translation members (43) is the same as the number of the first abutment surfaces (6).

6. The CNC fixture with pneumatic fixing structure according to claim 5, characterized in that: The lifting member (42) is provided with two first abutting surfaces (6), the two first abutting surfaces (6) are arranged opposite to each other, the translation member (43) is provided with two groups, the two groups of translation members (43) are arranged opposite to each other and are located on both sides of the lifting member (42), and one group of the first abutting surfaces (6) abuts against one group of the second abutting surfaces (7).

7. The CNC fixture with a pneumatic fixing structure according to claim 1 is characterized in that: The pneumatic clamp (4) is located between the two groups of limiting portions (3), and the two groups of limiting portions (3) share one group of pneumatic clamp (4).

8. The CNC fixture with a pneumatic fixing structure according to claim 2 is characterized in that: The reference body (2) is provided with a drainage groove (5), and the drainage groove (5) is communicated with the positioning groove (31).

Images