Self-positioning clamping tool for processing chip pickup component

Abstract

The self-positioning clamping tool comprises a base, an elastic pressing block and a plunger workpiece, the base is in a long strip shape, an assembly cavity with the depth reaching the middle of the base is formed in one side wall of the base, and two vertical arc-shaped grooves are formed in the inner bottom face of the assembly cavity; a plurality of workpiece inserting holes are formed in the upper surface of the base, every two workpiece inserting holes correspondingly penetrate into the same assembling cavity, and upper end openings of the two arc-shaped grooves in the assembling cavity correspond to the workpiece inserting holes one to one; the elastic pressing block is embedded into the assembling cavity from the side face, the elastic pressing block is elastically connected with the inner bottom face of the assembling cavity, two arc-shaped elastic pressing grooves corresponding to the arc-shaped grooves are formed in the bottom face of the elastic pressing block, a plunger workpiece is inserted into the assembling cavity through the workpiece inserting hole, and under the action of the elastic pressing block, the plunger workpiece is pressed into the assembling cavity. The arc-shaped elastic pressing groove and the assembling cavity press the plunger workpiece from the two sides correspondingly, and the plunger workpiece is fixed to the base. A workpiece is fixed through elastic clamping, the workpiece is not prone to being damaged, and the clamping efficiency is higher.

Description

Technical Field

[0001] The utility model belongs to the technical field of clamping fixtures, and in particular relates to a self-positioning clamping fixture for processing chip picking components. Background Art

[0002] The core principle of the chip sorting machine nozzle is to achieve the adsorption and sorting of chips through the principle of inflation and negative pressure. There is usually a cavity inside the nozzle. By connecting to the air source and the vacuum system, when it is necessary to absorb the component, negative pressure is applied to the cavity, making the nozzle a negative pressure environment. A suction cup is installed at the end of the nozzle, and a small hole is provided at the end of the suction cup. When negative pressure is applied to the nozzle cavity, air will be sucked in through the small hole on the suction cup, generating negative pressure suction, thereby adsorbing the chip. The cavity part that docks with the bottom of the nozzle is a vacuum plunger. The upper and lower parts of the vacuum plunger must be sealed with the nozzle and the air source respectively. Therefore, the shape of the vacuum plunger needs to be adaptively processed. The vacuum plunger is short in length, and the upper and lower parts need to be processed in batches. During processing, it must be clamped to ensure that the vacuum plunger is stable and motionless. Currently, there is a lack of fixtures that can clamp multiple vacuum plungers at the same time, and when clamping, blocks or bolts are generally used to tighten. This is not only difficult to assemble and disassemble, but also easy to cause wear on the workpiece and the fixture. Indentations are also prone to appear on the workpiece surface, reducing the service life of the fixture and the processing efficiency is relatively low. Utility Model Content

[0003] In response to the above problems and technical needs, the utility model provides a self-positioning clamping tool for processing chip picking components, which can clamp multiple plunger workpieces at a time to achieve mass production. The workpieces are fixed by elastic clamping, which is not easy to damage the workpieces, is easy to operate, and has higher clamping efficiency.

[0004] The technical solution of the present invention is as follows: a self-positioning clamping tool for processing chip picking components, comprising a base, an elastic pressing block and a plunger workpiece, the base is long and narrow, and an assembly cavity with a depth reaching the middle of the base is opened on one side wall of the base, and two vertical arc grooves are provided on the bottom surface of the assembly cavity; a plurality of workpiece insertion holes are provided on the upper surface of the base, and every two workpiece insertion holes correspond to the same assembly cavity, and the upper ports of the two arc grooves in the assembly cavity correspond one to one with the workpiece insertion holes; the elastic pressing block is embedded in the assembly cavity from the side, and the elastic pressing block and the inner bottom surface of the assembly cavity are elastically connected, and the bottom surface of the elastic pressing block is provided with two arc spring-pressing grooves corresponding to the arc grooves, and the plunger workpiece is inserted into the assembly cavity through the workpiece insertion hole. Under the action of the elastic pressing block, the arc spring-pressing groove and the assembly cavity respectively press the plunger workpiece from both sides to fix the plunger workpiece on the base. In this solution, multiple plunger workpieces can be clamped on the base at the same time. The plunger workpiece and the workpiece socket are clamped and fixed by an elastic clamping block. The clamping operation is simple and the fixing effect is good, which can effectively avoid wear and indentation during the clamping process.

[0005] Furthermore, a through hole is provided in the middle of the elastic pressure block, and a threaded through hole is provided in the middle of the bottom surface of the assembly cavity. The threaded through hole corresponds to the position of the through hole. A positioning bolt is connected in the through hole. The positioning bolt passes through the through hole from the outside to the inside. The tail of the positioning bolt blocks the outer side of the elastic pressure block, and the front end of the positioning bolt extends out of the through hole and is screwed into the threaded through hole. By screwing the positioning bolt in or out, the elastic pressure block can be driven to be pressed inward or popped outward. The head of the positioning bolt is blocked outside the elastic pressure block, and the head can limit the elastic pressure block. When the positioning bolt is loosened, the elastic pressure block pops outward, and the clamping area between the arc groove and the arc spring-pressing groove is widened, which is convenient for loading or removing the plunger workpiece; when the positioning bolt is tightened inward, the elastic pressure block is pressed inward to fix the plunger workpiece.

[0006] Furthermore, two arc-shaped spring-loaded grooves are provided on either side of the positioning bolt, each with a dynamic blind hole formed outside the two arc-shaped spring-loaded grooves. Fixed blind holes, opposite to the dynamic blind holes, are provided outside the two arc-shaped grooves on the inner bottom surface of the assembly cavity. The dynamic blind holes and the fixed blind holes are connected by a spring, with both ends of the spring fixedly connected to the bottom surfaces of the dynamic blind holes and the fixed blind holes, respectively. A spring is provided between the spring-loaded groove and the arc-shaped spring-loaded groove. When the arc-shaped spring-loaded groove advances toward the spring-loaded groove, gradually reducing the clamping distance, the spring provides a buffering effect, preventing excessive clamping pressure from damaging the plunger workpiece.

[0007] Furthermore, the plunger workpiece includes an upper cylinder, a baffle and a lower cylinder, the baffle is arranged in the middle of the plunger workpiece, the lower cylinder of the plunger workpiece is inserted into the workpiece insertion hole, and the baffle is blocked on the upper surface of the base.

[0008] Furthermore, the base is T-shaped as a whole, with the two sides of the lower portion of the base narrowing inward to form a concave step. The concave step facilitates the fixation of the base. The base is mounted on the vise of the machining center workbench. The vise clamps the concave step to keep the base and the loaded plunger workpiece stationary, and then the plunger workpiece is processed.

[0009] Furthermore, the base is provided with a row of positioning holes at the bottom thereof, the positions of which correspond one to one with the workpiece insertion holes. When the plunger workpiece is clamped on the base, the bottom of the plunger workpiece faces the positioning holes, and the positioning holes can limit the base when the base is fixedly clamped.

[0010] The beneficial effects of the present invention are as follows: 1) multiple plunger workpieces can be clamped on the base at one time, thereby realizing batch production of plunger workpieces and improving processing efficiency; 2) an elastic clamping block is used to clamp the plunger workpiece, and the spring inside the elastic clamping block has a buffering effect. When the elastic clamping block is tightened inwardly, the arc-shaped spring-pressing groove advances toward the spring-pressing groove, and the spring can avoid excessive clamping force on the plunger workpiece during the increase of the tightening force, thereby causing damage to the plunger workpiece and protecting the plunger workpiece; and the relatively arranged arc groove and arc-shaped spring-pressing groove are arranged according to the outer peripheral shape of the plunger workpiece, which can disperse the clamping force, convert the "clamping force" into "holding force", and hold the plunger workpiece from the circumference, which can not only reduce local wear and indentation, but also enhance the fastening effect of the plunger workpiece and avoid the situation of loose clamping; 3) the setting of the threaded through hole and the uniform distribution of the springs on both sides provide accurate positioning for the clamping of the plunger workpiece. The elastic force is applied evenly during clamping, which can reduce the probability of manual operation errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 A three-dimensional diagram of the self-positioning clamping tooling for processing chip picking components of the utility model;

[0012] Figure 2 An exploded view of the self-positioning clamping fixture for processing chip picking components of the utility model;

[0013] Figure 3 This is a bottom structural diagram of the self-positioning clamping tooling for processing chip picking components of the utility model;

[0014] Figure 4 This is a structural diagram of the elastic pressing block in the utility model;

[0015] Figure 5 This is a structural diagram of the inner bottom surface of the assembly cavity in the present utility model;

[0016] Marked in the figure are: base 1, workpiece insertion hole 11, concave step 12, positioning through hole 13, assembly cavity 2, arc groove 21, threaded through hole 22, fixed blind hole 23, spring 24, elastic pressing block 3, arc-shaped spring pressure groove 31, positioning bolt 32, dynamic blind hole 33, through hole 34, plunger workpiece 4, upper column 41, baffle 42, lower column 43. DETAILED DESCRIPTION

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] like Figure 1-5The self-positioning clamping fixture for processing chip picking components of the present invention is shown, comprising a base 1, an elastic pressing block 3 and a plunger workpiece 4. The base 1 is long and has an assembly cavity 2 with a depth reaching the middle of the base on one side wall. The bottom surface of the assembly cavity 2 is provided with two vertical arc grooves 21; a plurality of workpiece insertion holes 11 are provided on the upper surface of the base, and every two workpiece insertion holes 11 are connected to the same assembly cavity 2. The upper ends of the two arc grooves 21 in the assembly cavity 2 correspond one-to-one to the workpiece insertion holes 11. A row of positioning through holes 13 are provided at the bottom of the base, and the positions of the positioning through holes 13 correspond one-to-one to the workpiece insertion holes 11. When the plunger workpiece 4 is clamped on the base 1, the bottom of the plunger workpiece 4 faces the positioning through holes 13. When the base 1 is fixedly clamped, the positioning through holes 13 can limit the base.

[0019] The base 1 is T-shaped as a whole, with the two sides of the lower part of the base narrowing inward to form a concave step 12. The concave step 12 facilitates the fixation of the base. The base 1 is mounted on the vise of the machining center workbench. The vise clamps the concave step to keep the base 1 and the loaded plunger workpiece 4 stationary, and then the plunger workpiece 4 is processed.

[0020] The elastic pressure block 3 is embedded in the assembly cavity 2 from the side, and the elastic pressure block 3 is elastically connected to the inner bottom surface of the assembly cavity 2. The bottom surface of the elastic pressure block 3 is provided with two arc-shaped spring-pressing grooves 31 corresponding to the arc-shaped grooves 21. The plunger workpiece 4 is inserted into the assembly cavity 2 through the workpiece insertion hole 11. Under the action of the elastic pressure block 3, the arc-shaped spring-pressing grooves 31 and the assembly cavity 2 respectively press the plunger workpiece 4 from both sides, fixing the plunger workpiece 4 on the base 1. The middle part of the elastic pressure block 3 is provided with a through hole 34, and the middle part of the inner bottom surface of the assembly cavity 2 is provided with a threaded through hole 22. The threaded through hole 22 corresponds to the position of the through hole 34. A positioning bolt 32 is connected to the through hole 34. The positioning bolt 32 passes through the through hole 34 from the outside to the inside. The tail of the positioning bolt 32 blocks the outer side of the elastic pressure block 3. The front end of the positioning bolt 32 extends through the through hole 34 and is screwed into the threaded through hole 22. By screwing in or out the positioning bolt 32, the elastic pressure block 3 can be driven inward or ejected outward.

[0021] The plunger workpiece 4 includes an upper cylinder 41, a retaining plate 42, and a lower cylinder 43. The retaining plate 42 is disposed in the middle of the plunger workpiece 4. The lower cylinder 43 of the plunger workpiece 4 is inserted into the workpiece insertion hole 11, and the retaining plate 42 is retained by the upper surface of the base. Two arc-shaped spring-pressing grooves 31 are disposed on either side of the positioning bolt 32. A dynamic blind hole 33 is also defined on the outer side of each of the two arc-shaped spring-pressing grooves 31. Fixed blind holes 23 are disposed on the outer sides of the two arc-shaped grooves 21 on the inner bottom surface of the assembly cavity 2, opposite to the dynamic blind holes 33. The dynamic blind holes 33 and the fixed blind holes 23 are connected by a spring 24, the ends of which are fixedly connected to the bottom surfaces of the dynamic blind holes 33 and the fixed blind holes 23, respectively.

[0022] The working process of the present invention is as follows: loosen the positioning bolt 32, the elastic pressure block 3 pops outward, and the space between the arc-shaped pressure groove 31 and the arc-shaped groove 21 widens, and the plunger workpiece 4 is inserted into the workpiece insertion hole 11. The stopper 42 of the plunger workpiece 4 is blocked on the upper surface of the base, and the lower column 43 of the plunger workpiece 4 is limited. The positioning bolt 32 is screwed inward, and the elastic pressure block 3 moves inward, driving the arc-shaped pressure groove 31 and the arc-shaped groove 21 to clamp and fix the lower column 43 of the plunger workpiece 4. The spring provides a buffer for the arc-shaped pressure groove 31 to avoid excessive clamping force; according to the above method, the plunger workpiece 4 is loaded into all the workpiece insertion holes 11 on the base 1. After clamping, the base 1 is placed on the workbench of the machining center, and the vise on the table clamps the concave step. After fixing the base 1, the upper column 41 of the plunger workpiece 4 is processed. After processing is completed, loosen the positioning bolt 32 again and take out the plunger workpieces 4 one by one.

[0023] The above descriptions are merely some preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes and substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A self-positioning clamping fixture for processing chip pickup components, characterized by: It includes a base, an elastic pressing block and a plunger workpiece. The base is long and narrow, and an assembly cavity with a depth reaching the middle of the base is opened on one side wall of the base, and two vertical arc grooves are provided on the bottom surface of the assembly cavity; a plurality of workpiece insertion holes are provided on the upper surface of the base, and every two workpiece insertion holes correspond to the same assembly cavity, and the upper ports of the two arc grooves in the assembly cavity correspond one to one with the workpiece insertion holes; the elastic pressing block is embedded in the assembly cavity from the side, and the elastic pressing block and the inner bottom surface of the assembly cavity are elastically connected. The bottom surface of the elastic pressing block is provided with two arc-shaped spring-pressing grooves corresponding to the arc grooves, and the plunger workpiece is inserted into the assembly cavity through the workpiece insertion hole. Under the action of the elastic pressing block, the arc-shaped spring-pressing grooves and the assembly cavity respectively press the plunger workpiece from both sides to fix the plunger workpiece on the base.

2. The self-positioning clamping fixture for processing chip pickup components according to claim 1, characterized in that: A through hole is provided in the middle of the elastic pressure block, and a threaded through hole is provided in the middle of the bottom surface of the assembly cavity. The threaded through hole corresponds to the position of the through hole. A positioning bolt is connected in the through hole. The positioning bolt passes through the through hole from the outside to the inside. The tail of the positioning bolt blocks the outer side of the elastic pressure block, and the front end of the positioning bolt extends out of the through hole and is screwed into the threaded through hole. The elastic pressure block can be driven to be pressed inward or popped outward by screwing in or out the positioning bolt.

3. The self-positioning clamping fixture for processing chip pickup components according to claim 2, characterized in that: Two arc-shaped spring-pressing grooves are respectively arranged on both sides of the positioning bolt, and a dynamic blind hole is respectively opened on the outside of the two arc-shaped spring-pressing grooves. A fixed blind hole opposite to the dynamic blind hole is provided on the outside of the two arc-shaped grooves on the bottom surface of the assembly cavity. The dynamic blind hole and the fixed blind hole are connected by a spring, and the two ends of the spring are respectively fixedly connected to the bottom surfaces of the dynamic blind hole and the fixed blind hole.

4. The self-positioning clamping fixture for processing chip pickup components according to claim 3, characterized in that: The plunger workpiece comprises an upper cylinder, a baffle and a lower cylinder. The baffle is arranged in the middle of the plunger workpiece. The lower cylinder of the plunger workpiece is inserted into the workpiece insertion hole, and the baffle is blocked on the upper surface of the base.

5. The self-positioning clamping fixture for processing chip pickup components according to claim 4, characterized in that: The base is T-shaped as a whole, and both sides of the lower part of the base are narrowed inwardly to form concave steps.

6. The self-positioning clamping fixture for processing chip pickup components according to claim 5, characterized in that: A row of positioning through holes is provided at the bottom of the base, and the positions of the positioning through holes correspond one to one with the workpiece insertion holes.

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