Positioning clamp of drilling machine

Abstract

The drilling machine positioning clamp is compact in structure, convenient to maintain and capable of achieving rapid centering and clamping through the clamping jaw linkage structure. The base is used for supporting a product, the clamping assembly is used for limiting the position of the product, the pushing assembly is connected to the base in a sliding mode and drives the clamping assembly to rotate, the driving air cylinder is arranged on one side of the base, and the pushing assembly is matched with the movable end of the driving air cylinder in a pushing mode. The clamping assembly comprises three sets of push rods rotationally connected with the base, an inclined face is formed at the free end of each push rod, a clamping space for limiting the position of a product is formed among the three sets of inclined faces, a driving ring is in sliding fit with the middle of the base, and a protruding block rotationally connected with the pushing assembly is formed on the driving ring. And the driving ring is rotationally connected with three groups of guide blocks which are in sliding fit with the corresponding push rods correspondingly. The drilling machine positioning fixture is applied to the technical field of drilling machine positioning fixtures.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling machine positioning fixtures, in particular to a drilling machine positioning fixture. Background Art

[0002] Drilling refers to the operation of machining a hole in a workpiece with a drill bit. Some workpieces need to be drilled on a machine tool. When drilling a workpiece on a machine tool, in order to ensure the accuracy of the machining, the workpiece needs to be positioned to ensure that the position of the workpiece is fixed. Usually, a fixture is used to clamp the workpiece.

[0003] Existing drilling machines require specialized tubular fixtures for machining circular tubular workpieces. These fixtures are typically claw-shaped fixtures that clamp the workpieces at both ends. These fixtures are expensive, and when the number of workpieces processed in a batch is not particularly large, the installation cost of specialized fixtures is high. Furthermore, when the drilling machine is subsequently used to machine other types of workpieces, the fixtures must be removed, which is inconvenient. Furthermore, drilling a hole in a circular tubular workpiece requires that the axis of the hole to be drilled intersect with the axis of the tubular workpiece, meaning the hole must be drilled at the highest point of the tubular workpiece. However, existing fixtures, after clamping the tubular workpiece, make it difficult to ensure that the drilling position intersects the machining axis. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a drilling machine positioning fixture which has a compact structure, is easy to maintain, and can achieve rapid centering and clamping through a clamping claw linkage structure.

[0005] The technical solution adopted by the present invention is: the present invention includes a base for supporting the product, a clamping assembly arranged in the middle of the base to limit the position of the product, a pushing assembly slidably connected to the base to drive the clamping assembly to rotate, and a driving cylinder arranged on one side of the base, the pushing assembly is pushed and matched with the movable end of the driving cylinder, the clamping assembly includes three groups of push rods rotatably connected to the base, the free end of each push rod is formed with an inclined surface, and a clamping space for limiting the position of the product is formed between the three groups of inclined surfaces, a driving ring is slidably fitted in the middle of the base, the driving ring is formed with a protrusion connected to the pushing assembly, and the driving ring is rotatably connected with three groups of guide blocks corresponding to the corresponding push rods that slidably fit.

[0006] Furthermore, the driving ring includes a sliding ring that is slidably matched with the base, and an adjusting ring that is arranged on the outside of the sliding ring and connected to the pushing assembly, and the protrusion is arranged on one side of the adjusting ring.

[0007] Furthermore, the inclined surface of the push rod is provided with a gasket that contacts the product.

[0008] Furthermore, the pushing assembly includes a pushing block, a locking seat and an elastic member, the pushing block and the locking seat are both slidably matched with the base, one end of the elastic member is fixedly connected to the pushing block, the second end of the elastic member is fixedly connected to the first side of the locking seat, the second side of the locking seat is locked and connected to the driving cylinder, and the pushing block is formed with a fixing groove, which is fixedly connected to the protrusion through a locking member.

[0009] Furthermore, the engaging seat is formed with a snap groove whose width gradually increases along the opening direction, and the movable end of the driving cylinder is provided with a snap block detachably connected to the snap groove.

[0010] Furthermore, a support platform for placing products is provided in the middle of the base, and a slide groove for the drive ring to rotate is provided at the edge of the support platform. An adjustment groove for the push block and the locking seat to slide and cooperate is provided on one side of the slide groove, and two groups of limit blocks arranged opposite to each other are formed in the adjustment groove, and the width between the two groups of limit blocks is smaller than the width of the locking seat.

[0011] Furthermore, the diameter of the support platform gradually decreases from top to bottom, and the base is also formed with a water outlet, the water inlet of the water outlet is arranged at the bottom of the support platform, and the outlet of the water outlet is arranged on one side of the base.

[0012] Furthermore, the base is provided with a protective cover, and a reserved groove for placing the product is provided in the middle of the protective cover.

[0013] The beneficial effects of the present invention are as follows: since the three groups of push rods of the present invention are arranged on the base at equal intervals, the angle between two adjacent groups of push rods is 120 degrees, the center position of the clamping space is always coaxial with the axis of the drill hole, ensuring the coaxiality of the product centering, each guide block is provided with a rotating rod rotatably connected to the drive rod, and a sliding groove corresponding to the sliding cooperation with the corresponding push rod is formed in the middle of the guide block. When the driving cylinder is pushed out, the push assembly drives the rotating part to move in the clockwise direction, and the three groups of guide blocks drive the corresponding push rods to rotate synchronously. The three groups of push rods approach each other and shrink to clamp the product. At this time, the product is clamped and fixed at the axis position of the drill hole, and no additional centering mechanism is required for cooperation and adjustment, thereby improving the convenience of clamping and fixing.

[0014] The push assembly adopts spring buffer push limit, the driving cylinder is pushed out to make the push block and the locking seat slide, the position of the three groups of push rods is adjusted to contact the product surface, and the driving cylinder continuously outputs thrust. At this time, the elastic part is compressed to convert the excessive thrust into compression rebound force, which has a good buffering effect and prevents the driving cylinder from being pushed out too much and causing the push rod to crush the outer surface of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the utility model in an open state;

[0016] Figure 2 This is a schematic structural diagram of the utility model in a clamping state;

[0017] Figure 3 yes Figure 1 A partial enlarged view of part A;

[0018] Figure 4 It is a structural diagram of the base of the utility model;

[0019] Figure 5 It is a structural diagram of the pressing assembly and the pushing assembly of the utility model;

[0020] Figure 6 It is an exploded view of the push assembly of the utility model;

[0021] Figure 7 It is a structural schematic diagram of the utility model in a state where a protective cover is installed.

[0022] In the figure: 1. Base; 11. Support platform; 12. Slide groove; 13. Adjustment groove; 14. Water outlet; 15. Protective cover; 16. Limit block; 2. Clamping assembly; 21. Push rod; 22. Drive ring; 221. Sliding ring; 222. Adjustment ring; 23. Bump; 24. Guide block; 3. Push assembly; 31. Push block; 32. Engaging seat; 33. Elastic member; 34. Fixing groove; 35. Buckle groove; 4. Drive cylinder; 41. Buckle block. DETAILED DESCRIPTION

[0023] like Figures 1 to 7As shown, in this embodiment, the utility model includes a base 1 for supporting the product, a clamping assembly 2 arranged in the middle of the base 1 to limit the position of the product, a pushing assembly 3 slidably connected to the base 1 to drive the clamping assembly 2 to rotate, and a driving cylinder 4 arranged on one side of the base 1, the pushing assembly 3 is pushed and matched with the movable end of the driving cylinder 4, the clamping assembly 2 includes three groups of push rods 21 rotatably connected to the base 1, the free end of each push rod 21 is formed with an inclined surface, and a clamping space for limiting the position of the product is formed between the three groups of inclined surfaces. A driving ring 22 is slidably fitted in the middle of the base 1, the driving ring 22 is formed with a protrusion 23 connected to the pushing assembly 3, and the driving ring 22 is rotatably connected with three groups of guide blocks 24 corresponding to the corresponding push rods 21. A plurality of rotating columns are provided on the base 1, and the rotating columns are rotatably connected to a group of push rods. The three groups of push rods 21 are equidistantly arranged on the base 1, and there is a gap between two adjacent groups of push rods 21. The included angle is 120 degrees, and the center position of the clamping space is always coaxial with the axis of the drill hole to ensure the coaxiality of the product. Each guide block 24 is provided with a rotating rod rotatably connected to the drive rod, and a sliding groove corresponding to the corresponding push rod 21 is formed in the middle of the guide block 24. When the driving cylinder 4 is pushed out, the pushing assembly 3 drives the rotating part to move in the clockwise direction, and the three groups of guide blocks 24 drive the corresponding push rods 21 to rotate synchronously. The three groups of push rods 21 approach each other and shrink and clamp the product. At this time, the product is clamped and fixed in the axis position of the drill hole. No additional centering mechanism is required for adjustment, which improves the convenience of clamping and fixing; the pushing assembly 3 adopts a spring buffer pushing limiter, and the driving cylinder 4 is pushed out to make the push block 31 and the locking seat 32 slide, and the position of the three groups of push rods 21 is adjusted to contact the product surface. The driving cylinder 4 continuously outputs thrust. At this time, the elastic member 33 is compressed to convert excessive thrust into compression rebound force, which has a good buffering effect and avoids excessive pushing of the driving cylinder 4 causing the push rod 21 to crush the outer surface of the product.

[0024] In this embodiment, the driving ring 22 includes a sliding ring 221 that slides with the base 1, and an adjusting ring 222 that is arranged on the outside of the sliding ring 221 and connected to the pushing assembly 3. The protrusion 23 is arranged on one side of the adjusting ring 222. The adjusting ring 222 is a rubber structure and has a certain elasticity that can slide with the side wall of the slide groove 12 of the base 1. An opening is formed in the middle of the protrusion 23 to facilitate the locking piece to pass through and push open for locking and fixing to avoid slipping.

[0025] In this embodiment, the inclined surface of the push rod 21 is provided with a gasket that is in contact with the product. The gasket is made of rubber and has good wear resistance and friction. It deforms when pressed against the product, further increasing the relative friction and avoiding slippage during drilling.

[0026] In this embodiment, the pushing assembly 3 includes a pushing block 31, a snap seat 32 and an elastic member 33. The pushing block 31 and the snap seat 32 are both slidably matched with the base 1. One end of the elastic member 33 is fixedly connected to the pushing block 31, and the second end of the elastic member 33 is fixedly connected to the first side of the snap seat 32. The second side of the snap seat 32 is snap-connected to the driving cylinder 4. The pushing block 31 is formed with a fixing groove 34, and the fixing groove 34 is fixedly connected to the protrusion 23 through a locking member. The elastic member 33 is a compression spring. When the pushing and snap seats 32 are both provided with a spring, the elastic member 33 is fixedly connected to the elastic member 33. The guide pin of the guide member 33 passes through the middle of the elastic member 33 to ensure that the spring compression rebound position remains straight. The pushing assembly 3 adopts a spring buffer pushing limiter, and the driving cylinder 4 is pushed out to make the push block 31 and the engaging seat 32 slide, and the position of the three groups of push rods 21 is adjusted to contact the product surface. The driving cylinder 4 continuously outputs thrust. At this time, the elastic member 33 is compressed to convert excessive thrust into compression rebound force, which has a good buffering effect and avoids excessive pushing of the driving cylinder 4, causing the push rod 21 to crush the outer surface of the product. The fixed groove 34 structure is designed to engage with the protrusion 23, and the connection is quick and convenient, simplifying the installation and connection operation.

[0027] In this embodiment, the snap-fit ​​seat 32 is formed with a snap-fit ​​groove 35 whose width gradually increases along the opening direction. The movable end of the driving cylinder 4 is provided with a snap-fit ​​block 41 detachably connected to the snap-fit ​​groove 35. The snap-fit ​​block 41 is made of rubber and can be squeezed into the snap-fit ​​groove 35 under the thrust of the driving cylinder 4. When pushed out, the snap-fit ​​seat 32 and the two sets of limit blocks 16 push and limit. The snap-fit ​​block 41 exits the snap-fit ​​groove 35 under the pull of the driving cylinder 4, ensuring that the push rod 21 swings and adjusts within a certain degree of angle to avoid collision damage caused by excessive rotation.

[0028] In this embodiment, a support platform 11 for placing products is provided in the middle of the base 1, and a slide groove 12 for the drive ring 22 to rotate is provided on the edge of the support platform 11, and an adjustment groove 13 for the push block 31 and the locking seat 32 to slide and cooperate is provided on one side of the slide groove 12. Two sets of limit blocks 16 arranged opposite to each other are formed in the adjustment groove 13, and the width between the two sets of limit blocks 16 is smaller than the width of the locking seat 32. The limit blocks 16 are used to limit the maximum withdrawal distance of the locking seat 32 to ensure that the push rod 21 swings and adjusts within a certain degree of angle to avoid collision damage caused by excessive rotation.

[0029] In this embodiment, the diameter of the support platform 11 gradually decreases from top to bottom, and the base 1 is also formed with a water outlet 14. The water inlet of the water outlet 14 is arranged at the bottom of the support platform 11, and the outlet of the water outlet 14 is arranged on one side of the base 1. The inclined support groove can collect the drilling fluid in the middle of the support platform 11, and the debris and excess drilling fluid are discharged along the water outlet 14, thereby reducing the accumulation of drilling fluid and debris after drilling, which affects the subsequent drilling processing operation.

[0030] In this embodiment, the base 1 is provided with a protective cover 15, and a reserved groove for placing the product is provided in the middle of the protective cover 15. The protective cover 15 is used to prevent drilling debris from falling into the clamping component 2 and the pushing component 3, affecting the accuracy of use.

[0031] The working principle of this utility model:

[0032] After the product is placed on the support platform 11, the driving cylinder 4 is pushed out, and the buckle block 41 pushes the push assembly 3 to slide. The sliding of the push block 31 drives the drive ring 22 to rotate in the clockwise direction. The three groups of guide blocks 24 drive the corresponding push rods 21 to rotate synchronously. The three groups of push rods 21 approach each other and shrink and clamp the product. At this time, the product is clamped and fixed at the axis position of the drill hole. The driving cylinder 4 continues to push out and continuously outputs thrust. At this time, the elastic member 33 is compressed to convert the excessive thrust into compression rebound force. The buckle block 41 is squeezed and deformed and engages with the buckle groove 35.

[0033] After the drilling is completed, the driving cylinder 4 retracts, and the elastic member 33 resets and extends until it recovers its original length. At this time, the buckle block 41 engages with the buckle groove 35, pulling the push block 31 back, thereby driving the drive ring 22 to rotate counterclockwise. The three groups of guide blocks 24 drive the corresponding push rods 21 to move synchronously, and the three groups of push rods 21 move away from each other to unlock the product. When the engaging seat 32 and the two groups of limit blocks 16 push, the pushing assembly 3 reaches the maximum position, and the three groups of push rods 21 reach the maximum open position. The driving cylinder 4 continues to retract, causing the buckle block 41 to deform and exit the buckle groove 35, completing the unlocking.

[0034] When the product is taken out, the drilling fluid and debris flow out to the outside along the outlet channel 14 at the bottom.

[0035] Although the embodiments of the present invention are described with practical solutions, they do not limit the meaning of the present invention. For those skilled in the art, it is obvious to modify the implementation scheme and combine it with other solutions based on this description.

Claims

1. A drilling machine positioning fixture, comprising a base (1) for supporting a product, characterized in that: The invention also includes a clamping assembly (2) arranged in the middle of the base (1) for limiting the position of the product, a pushing assembly (3) slidably connected to the base (1) to drive the clamping assembly (2) to rotate, and a driving cylinder (4) arranged on one side of the base (1), the pushing assembly (3) and the movable end of the driving cylinder (4) are pushed together, the clamping assembly (2) includes three groups of push rods (21) rotatably connected to the base (1), the free end of each push rod (21) is formed with an inclined surface, and a clamping space for limiting the position of the product is formed between the three groups of inclined surfaces, the middle of the base (1) is slidably fitted with a driving ring (22), the driving ring (22 is formed with a protrusion (23) connected to the pushing assembly (3), and the driving ring (22) is rotatably connected with three groups of guide blocks (24) corresponding to the push rods (21) that are slidably fitted.

2. A drilling machine positioning fixture according to claim 1, characterized in that: The driving ring (22) comprises a sliding ring (221) that is in sliding engagement with the base (1), and an adjusting ring (222) that is arranged outside the sliding ring (221) and is connected to the pushing assembly (3), and the protrusion (23) is arranged on one side of the adjusting ring (222).

3. The drilling machine positioning fixture according to claim 1, characterized in that: The inclined surface of the push rod (21) is provided with a gasket that contacts the product.

4. The drilling machine positioning fixture according to claim 1, characterized in that: The pushing assembly (3) includes a pushing block (31), a snap-fit ​​seat (32) and an elastic member (33). The pushing block (31) and the snap-fit ​​seat (32) are both slidably matched with the base (1). One end of the elastic member (33) is fixedly connected to the pushing block (31), the second end of the elastic member (33) is fixedly connected to the first side of the snap-fit ​​seat (32), and the second side of the snap-fit ​​seat (32) is snap-fitted to the driving cylinder (4). The pushing block (31) is formed with a fixing groove (34), and the fixing groove (34) is fixedly connected to the protrusion (23) through a locking member.

5. The drilling machine positioning fixture according to claim 4, characterized in that: The snap-fit ​​seat (32) is formed with a snap-fit ​​groove (35) whose width gradually increases along the opening direction, and the movable end of the driving cylinder (4) is provided with a snap-fit ​​block (41) detachably connected to the snap-fit ​​groove (35).

6. The drilling machine positioning fixture according to claim 4, characterized in that: A support platform (11) for placing products is provided in the middle of the base (1), a slide groove (12) for the drive ring (22) to rotate is provided on the edge of the support platform (11), and an adjustment groove (13) for the push block (31) and the engaging seat (32) to slide and cooperate is provided on one side of the slide groove (12), and two sets of limiting blocks (16) arranged opposite to each other are formed in the adjusting groove (13), and the width between the two sets of limiting blocks (16) is smaller than the width of the engaging seat (32).

7. The drilling machine positioning fixture according to claim 6, characterized in that: The diameter of the support platform (11) gradually decreases from top to bottom, and the base (1) is further formed with a water outlet (14), the water inlet of the water outlet (14) is arranged at the bottom of the support platform (11), and the outlet of the water outlet (14) is arranged on one side of the base (1).

8. The drilling machine positioning fixture according to claim 1, characterized in that: The base (1) is provided with a protective cover (15), and a reserved groove for placing products is provided in the middle of the protective cover (15).

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