CN117754489A - One-side two-pin quick positioning and clamping device and operation method thereof - Google Patents

Abstract

The invention belongs to the technical field of machining equipment machinery, and particularly relates to a one-side two-pin quick positioning and clamping device and an operation method thereof. The first inner Zhang Gajin positioning component further comprises a top guide pin, a cylindrical pin-shaped core shaft body, an inner Zhang Gajin component, a cylinder connecting plate and a tensioning cylinder, wherein the top guide pin is connected to the upper end of the cylindrical pin-shaped core shaft body.

Description

A quick positioning clamping device with two pins on one side and its operating method

Technical Field

The invention belongs to the technical field of processing equipment machinery, and specifically relates to a two-pin quick positioning clamping device on one side and an operating method thereof.

Background technique

In machining and manufacturing, clamping devices are critical tools used to secure workpieces and ensure their accurate positioning during machining. However, some clamping devices currently on the market have limitations in positioning accuracy, degree of freedom restrictions, operating efficiency or other aspects, resulting in low efficiency during operation. Therefore, it is necessary to provide a new clamping device to solve these problems and improve the efficiency and accuracy of the machining process.

The existing fixture structure and its clamping positioning method still have shortcomings in achieving correct restriction and precise positioning of the workpiece's degree of freedom. For example, the Chinese patent publication number CN114346716A discloses a reel processing fixture for welding wire equipment and its use method. , the clamping of the inner hole of the reel and the outer wall of the reel are integrated into one, and the clamping during the entire reel processing process can be completed with one piece of equipment to achieve the purpose of positioning and fixing the reel; however, due to The patent lacks the key step of precise positioning, or it can be said that the clamping force is uneven; because the clamping force of the external clamping mechanism and the internal tensioning mechanism may be inconsistent, it may lead to deformation of the workpiece or inaccurate positioning. In addition, in many cases of tooling fixtures, two pins on one side are used to position the workpiece. However, this method has a common problem, that is, the "two pins" use cylindrical pins. According to the six-point positioning principle, two cylindrical pins are connected to a flat surface. has resulted in over-positioning. Therefore, in the field of precision machining and manufacturing, there is an increasingly urgent need for more accurate and suitable workpiece positioning technology.

Contents of the invention

The purpose of the present invention is to provide a two-pin quick positioning clamping device and its operating method, which can quickly position and clamp the workpiece and accurately position and stabilize the workpiece, thereby promoting the efficiency and accuracy of the automated production process.

The technical solutions adopted by the present invention are as follows:

A quick positioning clamping device with two pins on one side, including a clamp body, an inner tension clamping positioning component I, an inner tension clamping positioning component II, a pin, a rotatable handle assembly, and a bushing. The inner tension clamping positioning component One and two lower ends of the inner tensioning clamping and positioning component are connected to the upper surface of the clamp body, the lower ends of the four pins are connected to the four corners of the upper surface of the clamp body, and the two rotatable handle assemblies are connected to On the upper surface of the clamp body, the two bushings are connected to the pin holes at both ends of the clamp body.

The inner tensioning clamping and positioning component also includes a top guide pin, a cylindrical pin-shaped mandrel body, an inner tensioning clamping assembly, a cylinder connecting plate, and a tensioning cylinder. The top guide pin is connected to the cylindrical pin-shaped mandrel. The upper end of the body, the cylindrical pin-shaped mandrel body is connected to the upper surface of the cylinder connecting plate, a short-edged cylindrical surface is assembled between the cylindrical pin-shaped mandrel body and the cylinder connecting plate, and the inner tension clamp The tightening assembly is connected to the transmission shaft of the tensioning cylinder, the inner tensioning clamping assembly is placed entirely inside the cylindrical pin-shaped mandrel body, and the cylinder connecting plate is connected to the upper end of the tensioning cylinder.

The second inner tension clamping positioning component includes a rhombus pin-shaped mandrel body and a short cylindrical surface. The short cylindrical surface is connected to the lower surface of the rhombus pin-shaped mandrel body. The rhombus pin-shaped mandrel body is connected to the inner tension clamp. The tensioning assembly is adapted to fit, and the inner tensioning clamping assembly is placed entirely inside the rhombus pin-shaped mandrel body.

The inner tensioning clamping assembly also includes a claw, a wedge block, and a base. The outer surface of the claw is embedded in the chute of the wedge block. The claw is respectively connected with the cylindrical pin-shaped mandrel body and the diamond-shaped pin The mandrel body is adapted, and the wedge-shaped block is connected to the upper end of the base.

The number of the claws is three, and the three claws are equidistantly distributed.

Several square holes are provided on the side walls of the cylindrical pin-shaped mandrel body and the rhombus pin-shaped mandrel body. The square holes are equidistantly distributed in two rows, and the upper and lower claws are respectively inserted into the square holes on both sides.

The upper end surfaces of the wedge-shaped blocks are all inclined.

An operating method for a two-pin quick positioning clamping device on one side, the operating method includes the following steps:

S1: Guide initial positioning: The top guide pins of the inner tensioning clamping positioning component 1 and the inner tensioning clamping positioning component 2 guide and initially position the bottom hole of the workpiece;

S2: Two pin positioning on one side: Four pins form a plane, limiting the workpiece's three degrees of freedom. The short cylindrical surface on the inner tensioning clamping positioning component 2 limits the workpiece's two degrees of freedom. The short cylindrical surface on the inner tensioning clamping positioning component 1 limits the workpiece's two degrees of freedom. The chamfered cylindrical surface limits one degree of freedom of the workpiece and is used to completely position the workpiece's six degrees of freedom;

S3: Tensioning cylinder operation: The tensioning cylinder drives the base of the inner tensioning clamping assembly to move longitudinally, which is used to control the movement of the cylindrical pin-shaped mandrel body and the rhombus pin-shaped mandrel body;

S4: Internal tension clamping: The jaws clamp the workpiece internally under the coordinated action of the longitudinal movement of the wedge block;

S5: Reset: The tensioning cylinder drives the base to move longitudinally, and the claws contract under the synergy of the longitudinal movement of the wedge block to complete a cycle.

The technical effects achieved by the present invention are:

The invention's two-pin quick positioning clamping device and its operating method combine the two-pin positioning and internal tensioning assembly together to realize clamping while positioning, avoiding damage to the positioning accuracy during the clamping process, and not only The efficiency is improved, the positioning error is smaller, and the positioning is more accurate; it is driven by a tensioning cylinder, which has a fast response speed and is easy to realize high-speed automatic control. It realizes rapid positioning and clamping of the workpiece, improves production efficiency and accuracy, and has important practical value and economic benefits.

Description of the drawings

Figure 1 is a schematic diagram of the overall structure of an embodiment of the present invention;

Figure 2 is an exploded view of the inner tensioning clamping and positioning component 1 of the embodiment of the present invention;

Figure 3 is an exploded view of the inner tensioning clamping and positioning component 2 of the embodiment of the present invention;

Figure 4 is a front view of the inner tensioning clamping assembly according to the embodiment of the present invention;

Figure 5 is a cross-sectional view of the inner tensioning clamping assembly and the mandrel body according to the embodiment of the present invention;

Figure 6 is a cross-sectional view of the inner tensioning clamping assembly and the mandrel body in operation according to the embodiment of the present invention.

In the drawings, the parts represented by each number are listed as follows:

101. Clamp body; 102. Internal tensioning clamping positioning component one; 103. Internal tensioning clamping positioning component two; 104. Pin; 105. Rotatable handle assembly; 106. Bushing; 201. Top guide pin; 202. Cylindrical pin-shaped mandrel body; 203. Internal tensioning clamping component; 204. Cylinder connecting plate; 205. Tensioning cylinder; 206. Short-edged cylindrical surface; 301. Diamond-shaped pin-shaped mandrel body; 302. Short cylindrical surface; 401. Claw; 402. Wedge block; 403. Base.

Detailed ways

In order to make the purpose and advantages of the present invention more clear, the present invention will be described in detail below with reference to examples. It should be understood that the following text is only used to describe one or several specific implementations of the present invention, and does not strictly limit the protection scope of the specific claims of the present invention.

As shown in Figures 1 to 6, a two-pin quick positioning clamping device on one side includes a clamp body 101, an inner tension clamping positioning component 102, an inner tension clamping positioning component 2 103, a pin 104, and a rotatable handle. The lower ends of the assembly 105, the bushing 106, the internal tension clamping and positioning component 102 and the internal tension clamping and positioning component 2 103 are all connected to the upper surface of the clamp body 101, and the lower ends of the four pins 104 are connected to the four corners of the upper surface of the clamp body 101. , two rotatable handle assemblies 105 are connected to the upper surface of the clamp body 101, and two bushings 106 are connected to the pin holes at both ends of the clamp body 101.

As shown in Figure 2, the internal tensioning clamping positioning component 102 also includes a top guide pin 201, a cylindrical pin-shaped mandrel body 202, an internal tensioning clamping assembly 203, a cylinder connecting plate 204, a tensioning cylinder 205, and a top guide pin 201 Connected to the upper end of the cylindrical pin-shaped mandrel body 202, the cylindrical pin-shaped mandrel body 202 is connected to the upper surface of the cylinder connecting plate 204, and a short-edged cylindrical surface is assembled between the cylindrical pin-shaped mandrel body 202 and the cylinder connecting plate 204. 206. The internal tensioning clamping component 203 is connected to the transmission shaft of the tensioning cylinder 205. The internal tensioning clamping component 203 is placed entirely inside the cylindrical pin-shaped mandrel body 202. The cylinder connecting plate 204 is connected to the upper end of the tensioning cylinder 205.

As shown in Figure 3, the inner tensioning clamping positioning component 2 103 includes a rhombus pin-shaped mandrel body 301 and a short cylindrical surface 302. The short cylindrical surface 302 is connected to the lower surface of the rhombus pin-shaped mandrel body 301. The rhombus pin-shaped mandrel The body 301 is adapted to the inner tensioning clamping assembly 203, and the inner tensioning clamping assembly 203 is placed entirely inside the diamond-shaped pin-shaped mandrel body 301.

As shown in Figures 4 and 5, the inner tensioning clamping assembly 203 also includes a claw 401, a wedge block 402, and a base 403. The outer surface of the claw 401 is embedded in the slide groove of the wedge block 402. The claws 401 are respectively connected with the cylindrical pins. The shaped mandrel body 202 and the diamond-shaped pin-shaped mandrel body 301 are adapted to each other, and the wedge-shaped block 402 is connected to the upper end of the base 403. The number of the claws 401 is three, and the three claws 401 are equidistantly distributed. Several square holes are provided in the side walls of the cylindrical pin-shaped mandrel body 202 and the rhombus pin-shaped mandrel body 301. The square holes are equidistantly distributed in two rows, and the upper and lower claws 401 are respectively inserted into the square holes on both sides. The upper end surfaces of the wedge-shaped blocks 402 are all inclined.

This solution combines the two-pin positioning on one side with the inner tension clamping assembly 203. It realizes clamping while positioning, avoiding damage to the positioning accuracy during the clamping process. It not only improves efficiency, but also has smaller positioning errors and more accurate positioning. ; It is driven by the tensioning cylinder 205, which has fast response speed, easy to realize high-speed automatic control, realizes rapid positioning and clamping of the workpiece, improves production efficiency and precision, and has important practical value and economic benefits.

An operating method for a two-pin quick positioning clamping device on one side. The operating method includes the following steps:

S1: Guide initial positioning: In the workpiece processing process, the workpiece must first be accurately positioned and clamped. When placing the workpiece on the transfer fixture, the inner tension clamping positioning component 102 and the inner tensioning clamping positioning component 2 103 The top guide pin 201 guides and initially positions the bottom hole of the workpiece; this process is designed to ensure that the workpiece is accurately positioned to its approximate position, providing a reliable foundation for subsequent precision processing;

S2: Two pin positioning on one side: After preliminary positioning, more precise positioning must be carried out to ensure the high precision of the processing process. Four pins 104 form a plane for supporting and positioning the bottom of the workpiece, limiting the workpiece to three Degrees of freedom. The short cylindrical surface 302 on the inner tensioning clamping positioning component 103 limits the workpiece to two degrees of freedom. The short chamfered cylindrical surface 206 on the inner tensioning clamping positioning component 102 limits the workpiece to one degree of freedom. The six degrees of freedom are fully positioned; this structural design provides stable support for the workpiece and ensures that it maintains an accurate position during processing;

S3: Tensioning cylinder 205 operates: The tensioning cylinder 205 drives the base 403 of the inner tensioning clamping assembly 203 to move longitudinally, which is used to control the movement of the cylindrical pin-shaped mandrel body 202 and the rhombus pin-shaped mandrel body 301; The tension clamping assembly 203 is positioned at a preset designated position to facilitate the next step of tensioning, clamping and strengthening work within the workpiece;

S4: Internal tension clamping: The claw 401 performs internal tension clamping on the workpiece under the synergy of the longitudinal movement of the wedge block 402; this mechanism ensures the precise control of the claw 401. Through the linked movement with the wedge block 402, Clamp and position workpieces effectively;

S5: Reset: The tensioning cylinder 205 drives the base 403 to move longitudinally, and the claw 401 contracts under the synergy of the longitudinal movement of the wedge block 402 to complete a cycle.

The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be made. regarded as the protection scope of the present invention. The structures, devices and operating methods that are not specifically described and explained in the present invention are all implemented according to conventional means in the art unless otherwise specified or limited.

Claims (8)

1. A two-pin quick positioning clamping device on one side, characterized by: including a clamp body (101), an inner tension clamping positioning component (102), an inner tension clamping positioning component two (103), and a pin (104) , rotatable handle assembly (105), bushing (106), the lower ends of the first inner tension clamping and positioning component (102) and the second inner tension clamping and positioning component (103) are connected to the clamp body (101) The lower ends of the four pins (104) are connected to the four corners of the upper surface of the clamp body (101), and the two rotatable handle assemblies (105) are connected to the clamp body (101). On the surface, the two bushings (106) are connected to the pin holes at both ends of the clamp body (101). 2. A two-pin quick positioning clamping device on one side according to claim 1, characterized in that: the inner tension clamping positioning component (102) also includes a top guide pin (201) and a cylindrical pin-shaped mandrel. body (202), internal tensioning clamping assembly (203), cylinder connecting plate (204), tensioning cylinder (205), the top guide pin (201) is connected to the cylindrical pin-shaped mandrel body (202) At the upper end, the cylindrical pin-shaped mandrel body (202) is connected to the upper surface of the cylinder connecting plate (204), and a short cylindrical pin-shaped mandrel body (202) is assembled with the cylinder connecting plate (204). The chamfered cylindrical surface (206), the internal tension clamping component (203) is connected to the transmission shaft of the tensioning cylinder (205), the internal tension clamping component (203) is placed entirely in the cylindrical pin shape Inside the mandrel body (202), the cylinder connecting plate (204) is connected to the upper end of the tensioning cylinder (205). 3. A two-pin quick positioning clamping device on one surface according to claim 2, characterized in that: the inner tension clamping and positioning component 2 (103) includes a rhombus pin-shaped mandrel body (301) and a short cylindrical surface. (302), the short cylindrical surface (302) is connected to the lower surface of the rhombus pin-shaped mandrel body (301), and the rhombus pin-shaped mandrel body (301) is adapted to the inner tensioning clamping assembly (203) , and the inner tensioning clamping component (203) is placed entirely inside the rhombus pin-shaped mandrel body (301). 4. A two-pin quick positioning clamping device according to claim 3, characterized in that: the inner tension clamping assembly (203) also includes a claw (401), a wedge block (402), a base ( 403), the outer surface of the claw (401) is embedded in the chute of the wedge-shaped block (402), and the claw (401) is respectively connected with the cylindrical pin-shaped mandrel body (202) and the rhombus pin-shaped mandrel. The wedge-shaped block (402) is connected to the upper end of the base (403). 5. A two-pin quick positioning clamping device according to claim 4, characterized in that: the number of said claws (401) is three, and the three said claws (401) are equidistantly distributed. . 6. A two-pin quick positioning clamping device according to claim 4, characterized in that: the cylindrical pin-shaped mandrel body (202) and the rhombus pin-shaped mandrel body (301) are provided with a number of holes on the side walls. square holes, the square holes are equidistantly distributed in two rows, and the upper and lower claws (401) are respectively inserted into the square holes on both sides. 7. A quick positioning clamping device with two pins on one surface according to claim 4, characterized in that: the upper end surfaces of the wedge blocks (402) are all inclined. 8. An operating method for a two-pin quick positioning clamping device on one side, characterized in that: using the two-pin quick positioning clamping device on one side as claimed in any one of claims 1 to 7, the operating method includes the following steps: S1: Guide initial positioning: The top guide pins (201) of the inner tension clamping positioning component one (102) and the inner tension clamping positioning component two (103) guide and initially position the bottom hole of the workpiece; S2: Two pin positioning on one side: Four pins (104) form a plane, limiting the workpiece's three degrees of freedom. The short cylindrical surface (302) on the inner tension clamping positioning component two (103) limits the workpiece's two degrees of freedom. The short chamfered cylindrical surface (206) on the clamping positioning component one (102) limits one degree of freedom of the workpiece and is used to completely position the six degrees of freedom of the workpiece; S3: Tension cylinder (205) operation: The tension cylinder (205) drives the base (403) of the inner tension clamping assembly (203) to move longitudinally, which is used to control the cylindrical pin-shaped mandrel body (202) and the diamond-shaped pin core Movement of the shaft (301); S4: Internal tension clamping: The claw (401) performs internal tension clamping on the workpiece under the synergy of the longitudinal movement of the wedge block (402); S5: Reset: The tensioning cylinder (205) drives the base (403) to move longitudinally, and the claw (401) contracts under the synergy of the longitudinal movement of the wedge block (402) to complete a cycle.