CN220178739U - Finishing fixture for tabletop parts - Google Patents

Abstract

This application relates to a fixture for the finishing of tabletop parts, which belongs to the field of mechanical processing fixtures and is suitable for the finishing of tabletop parts. The structure includes a base plate, on which a fixed clamping and positioning device, a floating clamping device and a universally adjustable side top device are installed. The floating clamping device consists of clamping nut, guide pin I, lower claw, guide shaft, sliding base, adjusting screw, upper claw, guide pin II, dust cover, fixed base, mandrel, spring I, spring II, It consists of a rotating guide seat, a circlip seat and a spring III. This fixture uses the principle of spatial cam guide and cross universal transmission. It has a simple structure, is safe and reliable, and has high positioning sensitivity and precision. It not only improves production efficiency, but also ensures the stability of workpiece processing accuracy and greatly reduces production costs.

Description

Finishing fixture for tabletop parts

Technical field

The utility model relates to a fixture for finishing tabletop parts and belongs to the field of tooling fixtures for mechanical processing.

Background technique

In the field of machining, the finishing of tabletop parts, such as saddles, slides, worktables, slides, etc., has always been a difficulty in the domestic machining industry. The parallelism of the top and bottom of tabletop parts and the flatness of a single surface are generally The requirements are extremely high, and there are also perpendicularity requirements to other surfaces such as the nut seat surface. Therefore, the "three solid points and one virtual" clamping method is used for the finishing of tabletop parts. In the past, traditional methods such as top pressure, paper pads, and adjustable supports required operators to constantly adjust the posture of the workpiece to meet processing requirements. The requirements for its technical capabilities are high, and the human subjective influence factor is large, resulting in uncontrollable accuracy and stability of the produced workpieces, and the auxiliary working hours are long, which invisibly increases the production cost.

Utility model content

The utility model provides a finishing fixture for platen parts, which ensures controllable accuracy and stability of workpieces through tooling, eliminates human subjective factors, and reduces auxiliary working hours. The fixture uses the principle of spatial cam guide and cross universal transmission. The structure is simple, safe and reliable, and the positioning is sensitive and precise. It not only improves production efficiency, but also ensures the accuracy and stability of the workpiece, while greatly reducing production costs.

In order to solve the above technical problems, the specific technical solution of the present invention is as follows: a fixture for finishing tabletop parts, including a base plate, on which 3 fixed clamping positioning devices, 1 floating clamping device and 2 million are installed. Adjustable side top device; 3 fixed clamping positioning devices and 1 floating clamping device correspond to the four corner positions of the parts to be clamped, and 2 universal adjustable side top devices correspond to the side positions of the parts to be clamped;

The floating clamping device includes a fixed base, a sliding base is provided on the fixed base, a through hole is provided in the sliding base, and the bottom of the mandrel is inserted into the through hole; the circlip seat is set outside the bottom of the mandrel, and the lower part of the circlip seat is located on the mandrel. Between the sliding base and the sliding base, the upper part extends outwards and exposes the sliding base, and a spring III is provided between the top surface of the sliding base and the upper extension of the circlip seat;

The middle part of the mandrel is provided with a hole that matches the guide pin I. The middle part of the mandrel is covered with a lower claw. The lower part of the mandrel is provided with a lower spring limiter outward. The lower part of the lower claw is provided with an upper spring limiter inward. A spring II is installed between the spring limit table and the upper spring limit table; U-shaped holes are provided on the front and rear sides of the lower claw, and the guide pin I is located between the hole of the mandrel and the U-shaped hole of the lower claw. The shaft follows the guide pin I and moves up and down along the U-shaped hole; the upper part of the guide shaft is installed on the outside of the lower claw, and the lower part of the guide shaft is installed on the sliding base;

The upper part of the mandrel is covered with a rotary guide seat. The bottom of the rotary guide seat is connected to the top surface of the lower claw. The upper part of the rotary guide seat is covered with an upper claw. A spring I is installed between the upper surface of the bottom of the rotary guide seat and the lower surface of the upper claw; The side wall of the upper claw is provided with a through hole that matches the guide pin II. The rotating guide seat is provided with a guide groove. The guide groove is two straight grooves that intersect in a 135° V shape along the normal projection of the outer circumference of the rotating guide seat cylinder. The guide pin II is located between the guide groove of the rotating guide seat and the through hole of the upper claw, and the guide pin II moves in the guide groove;

There is a clamping nut on the top of the mandrel, and the bottom of the clamping nut is in pressing contact with the upper surface of the upper claw.

The lower claw and the upper claw protrude from one side, and the extension directions are corresponding. The extended end of the upper claw is provided with an adjusting screw, and the adjusting screw can move up and down along the threaded hole of the upper claw.

The upper part of the mandrel is provided with threads that match the clamping nut, and a hole that interferes with the guide pin I is provided in the middle; the bottom of the mandrel is a tapered side with a narrow top and a wide bottom, and is in line with the bottom of the circlip seat and is wide at the top. Narrow tapered hole fit.

The lower part of the circlip seat is an 8° conical shape that matches the mandrel, and the lower part of the circlip seat is evenly processed with rectangular grooves along the circumferential direction.

The spring compression resistance of the spring I, spring II, and spring III: spring III>spring II>spring I.

The upper part of the fixed base is provided with two T-shaped slots. The sliding base is installed on the upper part of the fixed base through bolts and T-shaped blocks; the dust cover is installed on the outside of the circlip seat through screws.

The fixed clamping and positioning device includes a pressure plate, a positioning block, a support pillow, a clamping bolt, a pad, and a jacket spring; the support pillow has an "I"-shaped structure with a T-shaped slot on the upper part, the positioning block, and the clamping bolt. The pad is installed in the T-shaped slot and can adjust its relative position along the T-shaped slot; the clamping bolt is equipped with a jacket spring, the upper part of the clamping bolt passes through the pressure plate, and the top of the clamping bolt is provided with a compression nut.

The universally adjustable side roof device includes a support body. The upper part of the support body is provided with a threaded through hole that matches the adjusting screw rod. The adjusting screw rod passes through the threaded through hole of the support body. One end of the adjusting screw rod is provided with a circular hole for installing a handle. Through hole, the other end is equipped with a side jack.

The side head is provided with a universal adjustment block, an inner ring, and an outer ring from the inside to the outside; the universal adjustment block and the inner ring are matched by a pin; and the inner ring and the outer ring are matched by a pin.

The beneficial effects of the utility model are: the above-mentioned finishing fixture for platen parts is suitable for the finishing process of thin plate parts such as machine tool saddles, slide seats, worktables, slides, etc. Its structure is simple and easy to use, and it does not place any technical requirements on the operator. High, positioning sensitivity and precision. It can effectively reduce auxiliary working hours, improve production efficiency while ensuring the stability of the processing accuracy of the workpiece.

Description of drawings

Figure 1 is a schematic structural diagram of the utility model;

Figure 2 is an isometric view of the fixed clamping and positioning device;

Figure 3 is an isometric view of the floating clamping device;

Figure 4 is a cross-sectional view of the floating clamping device;

Figure 5 is an isometric view of the circlip seat;

Figure 6 is an isometric view of the rotary guide seat;

Figure 7 is an exploded view of the universally adjustable side roof device;

Figure 8 is a schematic diagram of the working state of the utility model.

Among them, 1 base plate, 2 fixed clamping and positioning device: 2.1 pressure plate, 2.2 positioning block, 2.3 support pillow, 2.4 clamping bolt, 2.5 pad, 2.6 jacket spring, 3 floating clamping device: 3.1 clamping nut, 3.2 guide pin II, 3.3 lower claw, 3.4 guide shaft, 3.5 sliding base, 3.6 adjusting screw, 3.7 upper claw, 3.8 guide pin I, 3.9 dust cover, 3.10 fixed base, 3.11 mandrel, 3.12 spring I, 3.13 spring II, 3.14 rotating guide seat, 3.15 circlip seat, 3.16 spring III, 4 universally adjustable side top device; 4.1 handle, 4.2 support body, 4.3 adjusting screw, 4.4 outer ring, 4.5 shaft retaining ring, 4.6 inner ring, 47,000 to adjust the block.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, not all implementations. Example: Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

Example:

As shown in Figure 1, the utility model includes a base plate 1, a fixed clamping and positioning device 2, a floating clamping device 3, a universally adjustable side top device 4, etc.

The bottom plate 1 is a rectangular thin plate with a "convex" shaped cavity processed inside to reduce weight. Lifting rings are installed around the base plate, and each device is installed on the upper part of the base plate 1. The base plate 1 is fixed to the machine tool workbench through T-shaped blocks and bolts.

As shown in Figure 2, the fixed clamping and positioning device 2 is a typical screw pressure plate clamping combination, including a pressure plate 2.1, a positioning block 2.2, a support pillow 2.3, a clamping bolt 2.4, a pad 2.5, and an outer spring 2.6, where The support pillow 2.3 has an "I"-shaped structure with a T-shaped slot on the upper part. The positioning block 2.2, the clamping bolt 2.4, and the cushion block 2.5 can adjust their relative positions through the T-shaped slot to adapt to different workpieces.

As shown in Figures 3 and 4, the floating clamping device 3 includes a mandrel 3.11, the upper part of which is provided with threads to cooperate with the clamping nut 3.1, and the middle part of which is provided with a through hole to interfere with the guide pin I3.8 , the guide pin I3.8 is located between the hole of the mandrel 3.11 and the U-shaped hole of the lower claw 3.3. Its lower part is provided with an 8° tapered surface, which interferes with the circlip seat 3.15 when the device is clamped. The spring II3.13 is coaxial with the core shaft 3.11, and its upper part is fitted with the lower claw 3.3. One end of the upper claw 3.7 is threaded, and is responsible for adjusting the clamping distance of the device in cooperation with the adjusting screw 3.6. The other end is a through hole that passes through the rotary guide seat 3.14. The lower part of the through hole fits the spring I3.12, and the upper part of the through hole fits the lower surface of the clamping nut 3.1. There is a through hole on one side of the upper claw 3.7, and the guide pin II3.2 interferes with it. As shown in Figure 5, the rotating guide seat 3.14 is provided with a guide groove. The upper claw 3.7 moves along the inner guide groove of the rotating guide base 3.14 through the guide pin II3.2. The spring I3.12 is coaxial with the rotary guide base 3.14, its upper part fits the lower surface of the upper claw 3.7, and its lower part fits the flange of the rotary guide base 3.14.

As shown in Figure 6, the guide grooves of the rotary guide seat 3.14 are two straight grooves that intersect in a 135° V-shape along the normal projection of the outer circumference of the cylinder of the rotary guide seat 3.14. The guide pin II3.2 is located between the guide groove of the rotating guide base 3.14 and the through hole of the upper claw 3.7. The lower part of the rotating guide base 3.14 is bolted to the upper part of the lower claw 3.3.

There is a through hole in the middle of the lower claw 3.3. The mandrel 3.11 passes through the through hole. U-shaped holes are provided on the front and rear sides of the through hole. The mandrel 3.11 moves up and down along the U-shaped hole following the guide pin I3.8. And restrict the circular motion of the mandrel 3.11. A circular through hole is provided on the right side of the lower claw 3.3 to cooperate with the guide shaft 3.4 and can move along its axial direction. The lower part of the lower claw 3.3 is bolted to the circlip seat 3.15.

As shown in Figure 5, the circlip seat 3.15 has a through hole inside, the lower part of the circlip seat 3.15 is an 8° conical shape that matches the mandrel 3.11, and the lower part of the circlip seat 3.15 is evenly processed with rectangular grooves along the circumferential direction. The outer circle of the circlip seat 3.15 fits with the middle through hole of the sliding base 3.5 and moves along its axial direction. The spring III3.16 is coaxial with the circlip seat 3.15. The upper part of the spring III3.16 fits the flange of the circlip seat 3.15, and the lower part Fits the upper surface of the sliding base 3.5. There is a threaded hole on the right side of the sliding base 3.5. One end of the guide shaft 3.4 is threadedly connected to it. The other end passes through the through hole on the right side of the lower claw 3.3, and its axial position is limited by the nut.

The spring compression resistance of spring I3.12, spring II3.13 and spring III3.16: spring III3.16>spring II3.13>spring I3.12.

The upper part of the fixed base 3.10 is provided with two T-shaped slots. The sliding base 3.5 is installed on the upper part of the fixed base 3.10 through bolts and T-shaped blocks, and the appropriate position is adjusted according to the size and position of the workpiece. The dust cover 3.9 is installed on the flange of the circlip seat 3.15 through screws.

As shown in Figure 7, the universally adjustable side roof device 4 mainly includes a support body 4.2, the upper part of which is provided with a threaded through hole to cooperate with the adjusting screw 4.3, and the adjusting screw 4.3 passes through the threaded through hole of the supporting body 4.2. The left end of the adjusting screw 4.3 is provided with a circular through hole for installing the handle 4.1, and the right side is provided with a shoulder and an annular groove for installing the shaft retaining ring 4.5 and the outer ring 4.4. The outer ring 4.4 is provided with two through holes in the circumferential direction, and the inner ring 4.6 is also provided with two through holes in the circumferential direction. The outer ring 4.4 and the inner ring 4.6 are matched through a pin and rotate along the pin. The inner ring 4.6 is also provided with two through holes in the circumferential direction and the outer ring through holes are arranged at an angle of 90° through a pin shaft to cooperate with the universal adjustment block 4.7 and rotate along the pin shaft.

working principle:

The working process of this utility model is as follows: As shown in Figure 8, our company's T52 horizontal lathe saddle is used to lift the workpiece to be processed to the top of the fixture. Loosen the clamping bolt 2.4 in the fixed clamping and positioning device 2, and adjust the pressure plate 2.1 to the non-interference position. Rotate and loosen the clamping nut 3.1 in the floating clamping device 3. At this time, the spring II3.13 is in a compressed state, and the spring II3.13 stretches to the maximum position, driving the mandrel 3.11 to move downward, and the circlip seat 3.15 is disengaged from the mandrel 3.11. ; Spring III3.16 is in a compressed state. Since the circlip seat 3.15 is away from the limit of the mandrel 3.11, the spring III3.16 stretches to the maximum extension position, driving the circlip seat 3.15 to move upward. Continue to rotate the clamping nut 3.1, and the upper claw 3.7 relies on the pressure of the spring I3.12 to move along the rotating guide seat 3.14 until the guide pin II3.2 reaches the final position of its guide groove. At this time, the upper claw 3.7 has rotated 90° to avoid the workpiece. . Loosen the adjusting screw 4.3 in the universal adjustable side top device 4 to the appropriate position. Slowly put down the workpiece, and the lower surface of the workpiece fits the upper surface of the positioning block 2.2 and the lower claw 3.3. Tighten the adjusting screw 4.3 to position the workpiece. Adjust the pressure plate 2.1 to the clamping position and tighten the clamping bolt 2.4. Rotate and lock the clamping nut 3.1 in the floating clamping device 3. The upper claw 3.7 rotates to the 0 position and fits the top of the workpiece. Continue to rotate the clamping nut 3.1, the mandrel 3.11 moves upward, and the circlip seat 3.15 and the sliding base 3.5 Tighten and secure. The workpiece is clamped.

Claims (9)

1. The utility model provides a platen class part finish machining anchor clamps, includes bottom plate (1), its characterized in that: the bottom plate (1) is provided with 3 fixed clamping and positioning devices (2), 1 floating clamping device (3) and 2 universal adjustable side roof devices (4); the 3 fixed clamping positioning devices (2) and the 1 floating clamping devices (3) correspond to four corners of the part to be clamped, and the 2 universal adjustable side jacking devices (4) correspond to side positions of the part to be clamped;

the floating clamping device (3) comprises a fixed base (3.10), a sliding base (3.5) is arranged on the fixed base (3.10), a through hole is formed in the sliding base (3.5), and the bottom of the mandrel (3.11) is inserted into the through hole; the clamping spring seat (3.15) is sleeved outside the bottom of the mandrel (3.11), the lower part of the clamping spring seat (3.15) is arranged between the mandrel (3.11) and the sliding base (3.5), the upper part of the clamping spring seat extends outwards and exposes out of the sliding base (3.5), and a spring III (3.16) is arranged between the top surface of the sliding base (3.5) and the upper extending part of the clamping spring seat (3.15);

the middle part of the mandrel (3.11) is provided with a hole matched with the guide pin I (3.8), the middle part of the mandrel (3.11) is sleeved with a lower claw (3.3), the lower part of the mandrel (3.11) is outwards provided with a lower spring limiting table, the lower part of the lower claw (3.3) is inwards provided with an upper spring limiting table, and a spring II (3.13) is arranged between the lower spring limiting table and the upper spring limiting table; the front side and the rear side of the lower claw (3.3) are provided with U-shaped holes, a guide pin I (3.8) is arranged between the hole of the mandrel (3.11) and the U-shaped hole of the lower claw (3.3), and the mandrel (3.11) moves up and down along the U-shaped holes along with the guide pin I (3.8); the upper part of the guide shaft (3.4) is arranged outside the lower claw (3.3), and the lower part of the guide shaft (3.4) is arranged on the sliding base (3.5);

a rotary guide seat (3.14) is sleeved outside the upper part of the mandrel (3.11), the bottom of the rotary guide seat (3.14) is connected with the top surface of the lower claw (3.3), an upper claw (3.7) is sleeved outside the upper part of the rotary guide seat (3.14), and a spring I (3.12) is arranged between the upper surface of the bottom of the rotary guide seat (3.14) and the lower surface of the upper claw (3.7); the side wall of the upper claw (3.7) is provided with a through hole matched with the guide pin II (3.2), the rotary guide seat (3.14) is provided with a guide groove, the guide groove is two straight grooves which are projected along the outer circle Zhou Faxiang of the cylinder of the rotary guide seat (3.14) and are intersected in a 135-degree V shape, the guide pin II (3.2) is arranged between the guide groove of the rotary guide seat (3.14) and the through hole of the upper claw (3.7), and the guide pin II (3.2) moves in the guide groove;

the top of the mandrel (3.11) is provided with a clamping nut (3.1), and the bottom of the clamping nut (3.1) is in compression contact with the upper surface of the upper claw (3.7).

2. The platen-type part finishing jig according to claim 1, wherein: the lower claw (3.3) and the upper claw (3.7) extend out from one side, the extending direction corresponds to the extending direction, an adjusting screw (3.6) is arranged at the extending end of the upper claw (3.7), and the adjusting screw (3.6) can move up and down along the threaded hole of the upper claw (3.7).

3. The platen-type part finishing jig according to claim 1, wherein: the upper part of the mandrel (3.11) is provided with threads matched with the clamping nut (3.1), and the middle is provided with a hole in interference fit with the guide pin I (3.8); the bottom of the mandrel (3.11) is a conical side surface with a narrow upper part and a wide lower part, and is matched with a conical hole with a narrow lower part and a narrow upper part of the bottom of the clamp spring seat (3.15).

4. The platen-type part finishing jig according to claim 1, wherein: the lower part of the jump ring seat (3.15) is 8-degree conical matched with the mandrel (3.11), and rectangular grooves are uniformly machined in the lower part of the jump ring seat (3.15) along the circumferential direction.

5. The platen-type part finishing jig according to claim 1, wherein: spring compression resistance of the springs I (3.12), II (3.13) and III (3.16): spring III (3.16) > spring II (3.13) > spring I (3.12).

6. The platen-type part finishing jig according to claim 1, wherein: the upper part of the fixed base (3.10) is provided with two T-shaped grooves, and the sliding base (3.5) is arranged on the upper part of the fixed base (3.10) through bolts and T-shaped blocks; the dust cover (3.9) is arranged at the outer side of the clamp spring seat (3.15) through a screw.

7. The platen-type part finishing jig according to claim 1, wherein: the fixed clamping and positioning device (2) comprises a pressing plate (2.1), a positioning block (2.2), a supporting pillow (2.3), a clamping bolt (2.4), a cushion block (2.5) and an outer sleeve spring (2.6); the support pillow (2.3) is of an I-shaped structure, a T-shaped groove is formed in the upper portion of the support pillow, the positioning block (2.2) and the clamping bolt (2.4) are arranged in the T-shaped groove, and the cushion block (2.5) can be arranged in the T-shaped groove to adjust the relative position along the T-shaped groove; the clamping bolt (2.4) is provided with an outer sleeve spring (2.6), the upper part of the clamping bolt (2.4) penetrates through the pressing plate (2.1), and the top of the clamping bolt (2.4) is provided with a compression nut.

8. The platen-type part finishing jig according to claim 1, wherein: the universal adjustable side jacking device (4) comprises a supporting body (4.2), a threaded through hole matched with an adjusting screw (4.3) is formed in the upper portion of the supporting body (4.2), the adjusting screw (4.3) penetrates through the threaded through hole of the supporting body (4.2), a circular through hole for installing a handle (4.1) is formed in one end of the adjusting screw (4.3), and a side jacking head is installed at the other end of the adjusting screw.

9. The platen-type part finishing jig according to claim 8, wherein: the side top head is provided with a universal adjusting block (4.7), an inner ring (4.6) and an outer ring (4.4) from inside to outside; the universal adjusting block (4.7) is matched with the inner ring (4.6) through a pin shaft; the inner ring (4.6) is matched with the outer ring (4.4) through a pin shaft.