A special tool for precision part machining

Abstract

The application provides a special tool for precision part machining, and belongs to the technical field of machining. The special tool for precision part machining comprises a sliding seat and a clamping block. The sliding seat is fixedly connected with a taper block. The clamping block is inserted on the taper block. An elastic opening and closing buckle is arranged in the taper block. The buckle is buckled with the inner inclined surface of the clamping block. A downward pulling piece is arranged on the sliding seat. The downward pulling piece pulls the buckle downward. A locking piece is arranged in the buckle to prevent the buckle from being folded. The application has the following effects: the buckle in the clamping block is pulled by the downward pulling piece, so that the buckle is buckled with the inclined surface of the clamping block, and the angle deviation is corrected. When the downward pulling piece is pulled tightly, the clamping block is connected with the sliding seat through the taper block, and high-precision connection is realized. The locking piece can control the buckle to be limited in the clamping block or to be separated from the clamping block, and the clamping block is convenient to replace. The clamping block has no complex structure, and the cost of various specifications of the clamping block is reduced.

Description

Technical Field

[0001] This application relates to the field of machining technology, and more specifically, to a special tooling for machining precision parts. Background Technology

[0002] When machining precision parts, fixtures are needed for positioning. However, current precision parts machining fixtures are inconvenient for positioning the workpiece and make it difficult to adjust the machining position.

[0003] In response, Chinese patent application number CN202123088202.0 discloses a precision parts machining fixture. This solution mainly uses the function of a limiting rod to fix the connecting block and the clamping block. The limiting rod and the connecting block are easy to separate, which makes it convenient to replace the clamping block and can be used for different types of machining parts.

[0004] However, in the process of implementing the technical solution in the embodiments of this application, the inventors of this application discovered that the above-mentioned technology has at least the following technical problems: Precision parts require high machining accuracy, and the clamping blocks on both sides are usually custom-made. However, in the above solution, the clamping blocks and connecting blocks are clearance-fitted and connected by limit rod pins, resulting in poor assembly accuracy. Utility Model Content

[0005] To overcome the above deficiencies, this application provides a special tooling for machining precision parts, which aims to improve the problems mentioned in the background art.

[0006] This application provides a special tooling for machining precision parts, including a slide and a clamping block. A conical block is fixedly connected to the slide, and the clamping block is inserted into the conical block. A resiliently opening and closing latching member is disposed through the conical block. The latching member is engaged with the inclined surface inside the clamping block. A pull-down member is provided on the slide, which pulls the latching member downward. A locking member is disposed through the latching member to prevent the latching member from retracting.

[0007] In one specific implementation, the fastener includes a square plate with two elastic buckle strips fixedly connected to it, and the clamping block has a buckle groove that matches the buckle strips.

[0008] In one specific implementation, the fastener further includes a pull tube, which is fixedly connected to the square plate and movably passes through the slide block.

[0009] In the above process, the upper slope of the buckle is relatively wide. When the buckle abuts against the slope of the buckle groove, the buckle will correct the deviation of the clamping block and achieve angle fixation.

[0010] In one specific implementation, the locking element includes a stop block that slides between the two buckles.

[0011] In the above process, the pull tube is used to connect with the pull-down component, which pulls the buckle down, thereby causing the clamping block to abut against the cone block.

[0012] In one specific implementation, the locking element further includes a pull rod and a spring, the abutment is fixedly connected to the pull rod, the pull rod movably passes through the pull tube, the spring is sleeved on the pull rod, and the two ends of the spring abut against the abutment and the square plate respectively.

[0013] In the above implementation process, the lever is used to pull down the stop block in order to unlock the latch and allow the clamp block to separate.

[0014] In one specific implementation, the pull-down member includes a worm gear, which is rotatably connected to the slide and threadedly connected to the pull tube.

[0015] In one specific implementation, the pull-down member further includes a worm gear and a handwheel, the worm gear meshing with the worm wheel, the worm gear being rotatably connected to the slide block, and the handwheel being fixedly connected to one end of the worm gear.

[0016] In the above process, the handwheel rotation drives the worm and worm wheel to rotate, thereby driving the tube to move axially, which in turn pulls the buckle downward, so that the clamping block and the cone block are pressed together. The worm and worm wheel have a self-locking effect to prevent loosening.

[0017] In one specific implementation, a spring pad is provided on the slide block, and the spring pad abuts against the lower end of the clamping block.

[0018] In the above process, the spring pad lifts the clamping block. When the pull-down part starts to pull down, the buckle first contacts the slot on the clamping block. As the buckle moves down, the spring pad is compressed, increasing the pressure between the buckle and the slot, thus correcting the angle. As the buckle continues to move down, the clamping block contacts the cone block until they are pressed together, thus achieving cone surface positioning.

[0019] Compared with the prior art, the beneficial effects of this application are: the pull-down member pulls the buckle inside the clamping block, so that the buckle is engaged with the inclined surface of the clamping block to achieve angle correction; when the pull-down member is tightened, the clamping block and the slide are connected by a conical block to achieve high-precision connection; the locking member can control the buckle to be restricted inside the clamping block or to leave the clamping block, which facilitates the replacement of the clamping block; the clamping block has no complex structure, which helps to reduce the cost of clamping blocks of various specifications. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the external view of the precision parts machining tooling provided in the embodiments of this application; Figure 2 A schematic cross-sectional view of a precision parts machining tooling provided for an embodiment of this application; Figure 3 A schematic diagram illustrating the connection relationship between the fastener and the cone block provided for an embodiment of this application; Figure 4 This is a schematic diagram illustrating the connection relationship between the locking member and the snap-fit ​​member provided in the embodiments of this application.

[0022] In the diagram: 10-slide block; 11-spring pad; 20-clamping block; 30-cone block; 40-fastener; 41-square plate; 42-fastener strip; 43-pull tube; 50-pull-down component; 51-worm gear; 52-worm; 53-handwheel; 60-locking component; 61-stop block; 62-pull rod; 63-spring. Detailed Implementation

[0023] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0024] Please see Figures 1-4 This application provides a special tooling for machining precision parts, including a slide 10 and a clamping block 20. A conical block 30 is fixedly connected to the slide 10, and the clamping block 20 is inserted into the conical block 30. A snap fastener 40 with elastic opening and closing is provided through the conical block 30. The snap fastener 40 is fastened to the inclined surface inside the clamping block 20. A pull-down member 50 is provided on the slide 10. The pull-down member 50 pulls down the snap fastener 40. A locking member 60 is provided through the snap fastener 40 to prevent the snap fastener 40 from closing. Specifically, the pull-down member 50 pulls the buckle 40 inside the clamping block 20, so that the buckle 40 is engaged with the inclined surface of the clamping block 20 to achieve angle correction; when the pull-down member 50 is tightened, the clamping block 20 and the slide 10 are connected by the conical block 30 to achieve high-precision connection; the locking member 60 can control the buckle 40 to be restricted inside or outside the clamping block 20, which facilitates the replacement of the clamping block 20; the clamping block 20 has no complicated structure, which helps to reduce the cost of clamping blocks 20 of various specifications.

[0025] Please see Figures 1-4The fastener 40 includes a square plate 41, on which two elastic fastener strips 42 are fixedly connected. A fastening groove is provided in the clamping block 20 to fit the fastener strips 42. The fastener 40 also includes a pull tube 43, which is fixedly connected to the square plate 41 and movably passes through the slide block 10. The upper slope of the fastener strip 42 is relatively wide. When the fastener strip 42 abuts against the slope of the fastening groove, the fastener strip 42 will correct the clamping block 20, achieving angle fixation.

[0026] Please see Figures 1-4 The locking member 60 includes a stop block 61 that slides between two buckle bars 42. A pull tube 43 is used to connect to a pull-down member 50, which pulls the buckle 40 downward, thereby causing the clamping block 20 to abut against the cone block 30.

[0027] Please see Figures 1-4 The locking component 60 also includes a pull rod 62 and a spring 63. The abutment 61 is fixedly connected to the pull rod 62, and the pull rod 62 movably passes through the pull tube 43. The spring 63 is sleeved on the pull rod 62, and its two ends abut against the abutment 61 and the square plate 41, respectively. The pull rod 62 is used to pull down the abutment 61 to unlock the latch 40, allowing the clamping block 20 to separate.

[0028] Please see Figures 1-4 The pull-down component 50 includes a worm gear 51, which is rotatably connected to the slide 10 and threadedly connected to the pull tube 43. The pull-down component 50 also includes a worm 52 and a handwheel 53. The worm 52 meshes with the worm gear 51 and is rotatably connected to the slide 10. The handwheel 53 is fixedly connected to one end of the worm 52. Rotating the handwheel 53 drives the worm 52 and worm gear 51 to rotate, thereby driving the pull tube 43 to move axially, thus pulling the locking component 40 downwards, causing the clamping block 20 to abut against the cone block 30. The worm 52 and worm gear 51 have a self-locking effect to prevent loosening.

[0029] Please see Figures 1-4 A spring pad 11 is provided on the slide block 10, and the spring pad 11 abuts against the lower end of the clamping block 20. The spring pad 11 lifts the clamping block 20. When the pull-down member 50 starts to pull down, the buckle 42 first contacts the slot on the clamping block 20. As the buckle 42 moves down, the spring pad 11 is compressed, increasing the pressure between the buckle 42 and the slot, thereby correcting the angle. As the buckle 42 continues to move down, the clamping block 20 contacts the cone block 30 until they are pressed together, thereby achieving cone surface positioning.

[0030] The working principle of this precision parts machining fixture is as follows: The slide block 10 is mounted on two guide rods and moves along the guide rods via a lead screw. A necessary gap is left below the guide rods to facilitate the axial movement of the pull rod 62. The translation drive mechanism of the lead screw and guide rod is conventional technology and will not be described in detail here. When installing the special clamping block 20, the pull rod 62 is pulled, causing the stop block 61 to leave the upper ends of the two retaining strips 42. The clamping block 20 is inserted into the cone block 30 and falls onto the spring pad 11. At this time, the retaining groove presses against the upper ends of the two retaining strips 42, causing the upper ends of the two retaining strips 42 to slide into the retaining groove. Pull rod 62 and spring 63 push the stop block 61 between the two buckle bars 42. The buckle bars 42 lose their elasticity and are stuck in the buckle groove. Turning handwheel 53 drives worm gear 52 and worm wheel 51 to rotate, thereby driving pull tube 43 to move axially, thereby pulling the two buckle bars 42 downward. The buckle bars 42 first contact the groove on clamp block 20. As the buckle bars 42 move downward, the spring pad 11 is compressed, increasing the pressure between the buckle bars 42 and the groove, realizing angle correction. As the buckle bars 42 continue to move downward, clamp block 20 contacts cone block 30 until they are pressed together, realizing cone surface positioning.

[0031] In summary, by using the pull-down member 50 to pull the buckle 40 inside the clamping block 20, the buckle 40 is engaged with the inclined surface of the clamping block 20, thus achieving angle correction; when the pull-down member 50 is tightened, the clamping block 20 and the slide block 10 are connected in a conical shape through the conical block 30, thus achieving a high-precision connection; the locking member 60 can control the buckle 40 to be restricted inside or outside the clamping block 20, which facilitates the replacement of the clamping block 20; the clamping block 20 has no complex structure, which helps to reduce the cost of clamping blocks 20 of various specifications.

[0032] The above are merely embodiments of this application and are not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, improvements, or equivalent substitutions made within the spirit and principles of this application should be included within the scope of protection of this application. It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

Claims

1. A special tooling fixture for machining precision parts, characterized in that, Includes a slide (10) and a clamping block (20). A cone block (30) is fixedly connected to the slide (10). The clamping block (20) is inserted into the cone block (30). A snap fastener (40) with elastic opening and closing is provided through the cone block (30). The snap fastener (40) is fastened to the inclined surface inside the clamping block (20). A pull-down member (50) is provided on the slide (10). The pull-down member (50) pulls the snap fastener (40) down. A locking member (60) is provided through the snap fastener (40) to prevent the snap fastener (40) from closing.

2. The special tooling for precision parts machining according to claim 1, characterized in that, The fastener (40) includes a square plate (41), on which two elastic buckle strips (42) are fixedly connected. The clamping block (20) has a buckle groove that is adapted to the buckle strips (42).

3. The special tooling for machining precision parts according to claim 2, characterized in that, The buckle (40) also includes a pull tube (43), which is fixedly connected to the square plate (41) and the pull tube (43) movably passes through the slide (10).

4. The special tooling for machining precision parts according to claim 3, characterized in that, The locking element (60) includes a stop (61) that slides between the two buckles (42).

5. A special tooling for machining precision parts according to claim 4, characterized in that, The locking component (60) also includes a pull rod (62) and a spring (63). The abutment (61) is fixedly connected to the pull rod (62). The pull rod (62) is movably inserted through the pull tube (43). The spring (63) is sleeved on the pull rod (62). The two ends of the spring (63) abut against the abutment (61) and the square plate (41) respectively.

6. The special tooling for machining precision parts according to claim 5, characterized in that, The pull-down member (50) includes a worm gear (51), which is rotatably connected to the slide (10) and threadedly connected to the pull tube (43).

7. A special tooling for machining precision parts according to claim 6, characterized in that, The pull-down component (50) also includes a worm (52) and a handwheel (53). The worm (52) meshes with the worm wheel (51), the worm (52) is rotatably connected to the slide (10), and the handwheel (53) is fixedly connected to one end of the worm (52).

8. A special tooling for machining precision parts according to claim 7, characterized in that, A spring pad (11) is provided on the slide (10), and the spring pad (11) abuts against the lower end of the clamping block (20).

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