Automatic clamping device for small shaft parts and clamping machining method

Abstract

The invention discloses an automatic clamping device for small shaft parts, which comprises a supporting plate, a first air cylinder, a push rod, a second air cylinder, a clamping block, a V-shaped block, an upper limiting block, a lower limiting block, a first electromagnetic valve, a second electromagnetic valve and a heart-shaped chuck part, the heart-shaped chuck part is arranged on the upper surface of the supporting plate and located among the push rod, the clamping block, the V-shaped block, the upper limiting block and the lower limiting block, and the heart-shaped chuck part clamps and takes out small shaft parts to be machined through cooperation of the push rod, the clamping block, the V-shaped block, the upper limiting block and the lower limiting block. The invention further discloses a small shaft part grinding, clamping and machining method using the automatic clamping device for the small shaft part. The automatic clamping device has the beneficial effects that 1, through linkage control over the two electromagnetic valves, automatic clamping of parts can be achieved; the whole device is simple in design structure, the reliability of automatic clamping is guaranteed, and use and maintenance are convenient.

Description

Technical Field

[0001] The invention relates to the field of mechanical processing, and in particular to an automatic clamping device and a clamping processing method for grinding small shaft parts. Background Art

[0002] The grinding of small shaft parts is widely used in mechanical processing and manufacturing. When grinding, the clamping method of small shaft parts is usually as follows: Figure 1 As shown, the two ends of the small shaft parts are supported by the center holes at both ends through the tops 2a and 2b, and one end of the small shaft parts is clamped by the heart-shaped chuck 3 and connected to the lever 6 on the dial 1 in the grinder head frame through the clamping screw 5, driving the small shaft parts to rotate. When clamping, the small shaft parts need to be mounted on the V-shaped surface of the heart-shaped chuck 3, and then the clamping screw 5 is tightened, and then clamped on the two tops 2a and 2b.

[0003] With the development and promotion of factory modernization and intelligence, more and more production lines and equipment are using intelligent robots to realize the automation of production and processing. For the automated processing of small shaft parts grinding, the key is to realize the automatic clamping of parts. Figure 1 The clamping method shown is obviously not suitable for automatic clamping. Summary of the invention

[0004] One of the technical problems to be solved by the present invention is to provide a simple and reliable automatic clamping device for grinding small shaft parts in view of the problem that the existing clamping method for grinding small shaft parts is not conducive to automatic clamping.

[0005] The second technical problem to be solved by the present invention is to provide a grinding and clamping processing method for small shaft parts.

[0006] The technical problem to be solved by the present invention can be achieved by the following technical solutions:

[0007] An automatic clamping device for small shaft parts, comprising:

[0008] a support plate;

[0009] a first cylinder mounted on the upper surface of the support plate;

[0010] A push rod, the push rod is fixed on the movable rod of the first cylinder and is pushed to move by the first cylinder;

[0011] a second cylinder mounted on the lower surface of the support plate;

[0012] a clamping block, which is slidably disposed on the support plate and connected to the movable rod on the second cylinder, and is driven to move by the second cylinder;

[0013] a V-shaped block, the V-shaped block being fixed on the upper surface of the support plate and arranged opposite to the clamping block;

[0014] an upper limit block, the upper limit block is fixed on the upper surface of the support plate and is arranged opposite to the push rod;

[0015] a lower limit block, the lower limit block being fixed on the upper surface of the support plate and arranged opposite to the V-shaped block;

[0016] a first solenoid valve, wherein the air inlet and the air outlet of the first solenoid valve are connected to the air inlet and the air outlet of the first cylinder through an air pipe to control the working state of the first cylinder;

[0017] a second solenoid valve, the air inlet and the air outlet of the second solenoid valve being connected to the air inlet and the air outlet of the second cylinder through an air pipe to control the working state of the second cylinder;

[0018] A heart-shaped chuck component is arranged on the upper surface of the support plate and is located between the push rod, the clamping block, the V-shaped block, the upper limit block, and the lower limit block. The heart-shaped chuck component cooperates with the push rod, the clamping block, the V-shaped block, the upper limit block, and the lower limit block to clamp and remove small shaft parts to be processed.

[0019] In a preferred embodiment of the present invention, a rectangular groove is provided on the support plate, and the clamping block passes through the upper surface of the support plate from the lower surface of the support plate through the rectangular groove, and the rectangular groove provides space for reciprocating motion of the clamping block.

[0020] In a preferred embodiment of the present invention, both the first solenoid valve and the second solenoid valve are two-position five-way solenoid valves, and the air inlet of the two-position five-way solenoid valve is connected to the air source through an air inlet pipe.

[0021] In a preferred embodiment of the present invention, both the first cylinder and the second cylinder are thin dual-shaft cylinders.

[0022] In a preferred embodiment of the present invention, four support columns are fixed on the support plate, and the support plate is connected to the work surface via the four support columns.

[0023] In a preferred embodiment of the present invention, waist-shaped grooves are provided on both the upper limit block and the lower limit block, and the upper limit block and the lower limit block are respectively installed on the upper surface of the support plate by means of a first screw and a second screw, and the first screw and the second screw respectively pass through the waist-shaped grooves on the upper limit block and the lower limit block to facilitate the adjustment of the positions of the upper limit block and the lower limit block.

[0024] In a preferred embodiment of the present invention, the end of the push rod in contact with the heart-shaped chuck component is in a U-shaped structure, and a rolling sleeve is installed on the U-shaped structure through a third screw.

[0025] In a preferred embodiment of the present invention, the heart-shaped chuck component comprises:

[0026] A V-shaped chuck, the V-shaped chuck has an outer cylindrical surface, a clamping hole for clamping a small shaft part to be processed is provided in the center of the V-shaped chuck, and a V-shaped clamping portion is provided in the clamping hole; in addition, a half-moon groove is provided in the middle position of the axial direction of the V-shaped chuck, and the half-moon groove is connected with the clamping hole; the V-shaped chuck is arranged between the clamping block, the lower limit block and the V-shaped block, and the V-shaped chuck is clamped by the cooperation of the clamping block, the lower limit block and the V-shaped block;

[0027] An eccentric pressure rod, the first part of which is arranged in the semi-lunar groove and hinged to the V-shaped chuck, so that the first part of the eccentric pressure rod can rotate eccentrically in the semi-lunar groove; a cam surface opposite to the V-shaped clamping portion is arranged on the part of the first part of the eccentric pressure rod protruding into the clamping hole; the second part of the eccentric pressure rod extends between the push rod and the upper limit block, and the eccentric pressure rod is driven to rotate by the push rod, and the small shaft parts to be processed are clamped and removed through the cooperation of the cam surface and the V-shaped clamping portion; the upper limit block limits the release position of the eccentric pressure rod;

[0028] A pin shaft fixed on the outer cylindrical surface of the V-shaped chuck, the pin shaft is arranged between the lower limit block and the V-shaped block, and the movement of the V-shaped chuck in the circumferential direction is limited by the cooperation and limitation of the lower limit block;

[0029] A tension spring, one end of which is connected to the second portion of the eccentric pressure rod, and the other end of which is connected to the outer cylindrical surface of the V-shaped clamp, is used to drive the eccentric pressure rod to reset.

[0030] In a preferred embodiment of the present invention, the tension spring is a cylindrical helical tension spring.

[0031] The present invention also provides a small shaft part grinding and clamping processing method using the above-mentioned automatic clamping device for small shaft parts, comprising the following steps:

[0032] Step 1: Sending a command to the second solenoid valve to connect the air circuit of the second cylinder, so that the second cylinder drives the clamping block to move toward the V-shaped block, and clamps the heart-shaped clamping head component together with the V-shaped block;

[0033] Step 2: Sending a command to the first solenoid valve to connect the air circuit of the first cylinder, the first cylinder pushes the push rod to extend, so that the rolling sleeve contacts the second part of the eccentric pressure rod of the heart-shaped chuck component, and pushes the eccentric pressure rod to rotate eccentrically clockwise around the hinge point between the eccentric pressure rod and the V-shaped chuck, until the second part of the eccentric pressure rod contacts the upper limit block;

[0034] Step 3: The automated manipulator clamps the part to be processed, and places the lower end of the small shaft part to be processed into the clamping hole of the V-shaped chuck of the chicken heart chuck component;

[0035] Step 4: Send a command to the first solenoid valve to connect the air circuit of the first cylinder, the first cylinder drives the push rod to retract, and the eccentric pressure rod of the chicken heart chuck component rotates eccentrically counterclockwise around the hinge point of the eccentric pressure rod and the V-shaped chuck under the tension of the tension spring, so that the cam surface on the eccentric pressure rod cooperates with the V-shaped clamping part to jointly press the outer cylindrical surface of the lower end of the small shaft part 4 to be processed;

[0036] Step 5: Sending a command to the second solenoid valve to connect the gas circuit of the second cylinder, and the second cylinder drives the clamping block to retract, thereby releasing the clamping of the V-shaped clamp of the chicken heart clamp component;

[0037] Step 6: The automated manipulator clamps the small shaft part to be processed which has been clamped with the chicken heart chuck component, and places it between the two tops of the grinder. After the tail top is tightened, the automated manipulator releases the small shaft part to be processed which has been clamped with the chicken heart chuck component and returns it;

[0038] Step 7: The grinding machine headstock dial rotates, so that the lever on the grinding machine contacts the pin of the heart-shaped chuck component, and the pin drives the small shaft part to be processed that is clamped by the heart-shaped chuck component to rotate and start processing;

[0039] Step 8: After the small shaft parts are processed, the automated manipulator clamps the small shaft parts and places the heart-shaped chuck component between the push rod, the clamping block, the V-shaped block, the upper limit block, and the lower limit block;

[0040] Step 9: Sending a command to the second solenoid valve to connect the air circuit of the second cylinder, so that the second cylinder drives the clamping block to move toward the V-shaped block, and clamps the heart-shaped clamping head component together with the V-shaped block;

[0041] Step 10: Sending a command to the first solenoid valve to connect the air circuit of the first cylinder, the first cylinder pushes the push rod to extend, so that the rolling sleeve contacts the second part of the eccentric pressure rod of the chicken heart chuck component, and pushes the eccentric pressure rod to rotate eccentrically clockwise around the hinge point between the eccentric pressure rod and the V-shaped chuck until the second part of the eccentric pressure rod contacts the upper limit block;

[0042] Step 11: The automated robot clamps the processed small shaft parts and places them in the product box, completing the automatic clamping and processing of the parts.

[0043] Due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0044] 1. Automatic clamping of parts can be achieved through linkage control of two solenoid valves.

[0045] 2. The whole device has a simple design structure, which ensures the reliability of automatic clamping and is easy to use and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0047] Figure 1 This is a schematic diagram of the clamping processing of existing small shaft parts.

[0048] Figure 2 The present invention is a three-dimensional schematic diagram of an automatic clamping device for small shaft parts.

[0049] Figure 3 The present invention is a front view of an automatic clamping device for small shaft parts.

[0050] Figure 4 The present invention is a top view of an automatic clamping device for small shaft parts.

[0051] Figure 5 The present invention is a schematic structural diagram of a heart-shaped chuck component in an automatic clamping device for small shaft parts.

[0052] Figure 6 It is a schematic diagram of a heart-shaped chuck component clamping a small shaft part in an automatic clamping device for small shaft parts of the present invention being clamped on a grinding machine. DETAILED DESCRIPTION

[0053] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below with reference to specific diagrams.

[0054] See also Figures 2 to 5The figure shows an automatic clamping device for small shaft parts 4, including a support plate 100, a support column 200, a V-shaped block 300, an upper limit block 400, a lower limit block 500, an upper cylinder 600 (the aforementioned first cylinder), a lower cylinder 700 (the aforementioned second cylinder), a clamping block 800, a push rod 900, a rolling sleeve 1000, a heart-shaped chuck component 1100, a left solenoid valve 1300 (the aforementioned first solenoid valve), and a right solenoid valve 1400 (the aforementioned second solenoid valve).

[0055] The support plate 100 is a rectangular plate with a rectangular groove 101 in the middle. Four mounting holes 104 and a plurality of screw holes 105 are provided on the upper surface 102 and the lower surfaces 102 and 103 .

[0056] The support column 200 has a two-step outer circle, the lower cylindrical surface is an external thread 201 for connecting with the work surface, the upper cylindrical surface 202 has two symmetrical flat squares 203 in the middle, and the upper end surface 204 has a screw hole 205 concentric with the cylindrical surface. The support plate 100 is installed on the four support columns 200 by screws passing through the four mounting holes 104 and screwing into the screw holes 205.

[0057] The upper cylinder 600 and the lower cylinder 700 are respectively mounted on the upper surface 102 and the lower surface 103 of the support plate 100, the push rod 900 is mounted on the movable rod of the upper cylinder 600 by screws, and the clamping block 800 is mounted on the movable rod of the lower cylinder 700 by screws.

[0058] The side surface 801 of the clamping block 800 is a "7" shaped structure, and the front surface 802 is an inverted "T" shaped structure, and the front surface has two mounting screw holes 803. The two mounting screw holes 803 on the front surface of the clamping block 800 are connected to the movable rod in the lower cylinder 700. The clamping block 800 passes through the upper surface 100a of the support plate 100 through the rectangular groove 101 from the lower surface 100b of the support plate 100, and the rectangular groove 101 provides a space for the clamping block 800 to reciprocate.

[0059] The end of the push rod 900 and the heart-shaped chuck component 1100 are in a U-shaped structure, a screw hole 902 is opened in the lower ear 901 of the U-shaped structure, and a hole 904 slightly larger than the lower ear is opened in the upper ear 903. The screw 1200 passes through the hole 904 and is screwed into the screw hole 902, and the roller sleeve 1000 is sleeved on the screw 1200. The roller sleeve 1000 is a cylindrical body with an annular structure, and a mounting hole 1001 is formed in the middle to form a clearance fit with the mounting screw 1200, and the outer cylindrical surface 1002 is a smooth cylindrical surface.

[0060] The left solenoid valve 1300 and the right solenoid valve 1400 are two-position five-way solenoid valves. The air inlets 1301 and 1401 of the left solenoid valve 1300 and the right solenoid valve 1400 are connected to an air source through an air pipe 1500 .

[0061] The upper cylinder 600 and the lower cylinder 700 are thin dual-axis cylinders. The air inlet and outlet ports 601, 602, 701, 702 of the upper cylinder 600 and the lower cylinder 700 are connected to the air outlet ports 1302, 1302a, 1402, 1402a of the left solenoid valve 1300 and the right solenoid valve 1400 respectively through air pipes 1500a, 1500b, 1500c, 1500d.

[0062] The V-shaped block 300 has two V-shaped supporting surfaces 301, 302 and two mounting holes 303 on the side. Two screws are passed through the two mounting holes 303 and screwed into the two screw holes 105 on the upper surface 102, so that the V-shaped block 300 is installed on the upper surface 102 of the support plate 100 and is arranged opposite to the clamping block 800.

[0063] The upper limit block 400 and the lower limit block 500 are oblique rectangular blocks with a waist-shaped groove 401, 501 in the middle. The upper limit block 400 and the lower limit block 500 are respectively installed on the upper surface 102 of the support plate 100 by screws passing through the waist-shaped grooves 401, 501, wherein the upper limit block 400 is arranged opposite to the push rod 900, and the upper limit block 400 is located on the same side of the clamping block 800 and is arranged opposite to the V-shaped block 300.

[0064] The heart-shaped chuck component 1100 includes a V-shaped chuck 1110 , an eccentric pressure rod 1120 , a tension spring 1130 , a pin 1140 , a pin 1150 , and a screw 1160 .

[0065] The V-shaped chuck 1110 has an outer cylindrical surface, and a clamping hole 1111 for clamping a small shaft part 4 to be processed is provided in the center of the V-shaped chuck 1110, and a V-shaped clamping portion 1111a is provided in the clamping hole 1111; in addition, a semi-lunar groove 1114 is provided in the middle position of the axial direction of the V-shaped chuck 1110, and the semi-lunar groove 1114 is connected with the clamping hole 1111; in addition, a plurality of small holes 1112, a pin hole 1113, a screw hole 1115, and a pin hole 1116 are arranged in the circumferential direction of the V-shaped chuck 1110.

[0066] The pin 1150 is a cylindrical structure, and its outer cylindrical surface 1151 is installed in the pin hole 1113 by interference fit and connected to the V-shaped clamp 1110, serving as the eccentric rotating shaft of the eccentric pressure rod 1120.

[0067] The eccentric pressure rod 1120 is a special-shaped plate structure. An eccentric hole 1122 is opened inside the first part of the eccentric pressure rod 1120. The first part of the eccentric pressure rod 1120 is arranged in the semi-lunar groove 1114. The pin 1150 passes through the eccentric hole 1122 and is clearance-fitted, so that the first part of the eccentric pressure rod 1120 is hinged with the V-shaped clamp 1110, so that the first part of the eccentric pressure rod 1120 can rotate eccentrically in the semi-lunar groove 1114; a cam surface 1121 opposite to the V-shaped clamping portion 1111a is provided on the part of the first part of the eccentric pressure rod 1120 protruding into the clamping hole 1111;

[0068] The second part of the eccentric pressure rod 1120 is an arc-shaped handle 1123 , and an ear-shaped structure 1124 is provided on the middle side of the arc-shaped handle 1123 , and an ear hole 1125 is provided inside.

[0069] The pin shaft 1140 is a slender cylindrical structure, and its outer cylindrical surface 1141 forms an interference fit with the pin hole 1116 on the outer cylindrical surface of the V-shaped chuck 1110 .

[0070] The tension spring 1130 is a cylindrical helical tension spring with an ear hook 1131, 1132 at each end. The ear hook 1131 at one end is connected to the ear hole 1125 on the eccentric pressure rod 1120, and the ear hook 1132 at the other end is connected to the outer cylindrical surface of the V-shaped clamp 1110 through a screw 1160. The tension spring 1130 is used to drive the eccentric pressure rod 1120 to reset.

[0071] When in use, the V-shaped chuck 1110 is arranged between the clamping block 800 and the lower limit block 500 and the V-shaped block 300, and the V-shaped chuck 1110 is clamped by the cooperation of the clamping block 800 and the lower limit block 500 and the V-shaped block 300; the second part of the eccentric pressure rod 1120 extends between the push rod 900 and the upper limit block 400, and the eccentric pressure rod 1120 is driven by the push rod 900 to rotate, and the small shaft part 4 to be processed is clamped and removed by the cooperation of the cam surface 1121 and the V-shaped clamping part 1111a; the upper limit block 400 limits the release position of the eccentric pressure rod 1120;

[0072] The pin 1140 is disposed between the lower limit block 500 and the V-shaped block 300, and the movement of the V-shaped chuck 1110 in the circumferential direction is limited by the cooperation and limitation of the lower limit block 500;

[0073] A small shaft part grinding and clamping processing method using the automatic clamping device for small shaft parts 4 of the present invention comprises the following steps:

[0074] Step 1: Send a command to the second solenoid valve 1400 to connect the air circuit of the second cylinder 700, and the second cylinder 700 drives the clamping block 800 to move toward the V-shaped block 300, and clamps the heart-shaped clamping component 1100 together with the V-shaped block 300;

[0075] Step 2: Send a command to the first solenoid valve 1300 to connect the air circuit of the first cylinder 600, and the first cylinder 600 pushes the push rod 900 to extend, so that the rolling sleeve 1000 contacts the second part of the eccentric pressure rod 1120 of the heart-shaped chuck component 1100, and pushes the eccentric pressure rod 1120 to rotate eccentrically clockwise around the hinge point between the eccentric pressure rod 1120 and the V-shaped chuck 1110, until the second part of the eccentric pressure rod 1120 contacts the upper limit block 400;

[0076] Step 3: The automated manipulator clamps the part to be processed, and places the lower end of the small shaft part 4 to be processed into the clamping hole 1111 of the V-shaped chuck 1110 of the heart-shaped chuck component 1100;

[0077] Step 4: Send a command to the first solenoid valve 1300 to connect the air circuit of the first cylinder 600, and the first cylinder 600 drives the push rod 900 to retract. Under the action of the tension of the tension spring 1130, the eccentric pressure rod 1120 of the heart-shaped chuck component 1100 rotates eccentrically counterclockwise around the hinge point of the eccentric pressure rod 1120 and the V-shaped chuck 1110, so that the cam surface 1121 on the eccentric pressure rod 1120 cooperates with the V-shaped clamping part 1111a to jointly press the outer cylindrical surface of the lower end of the small shaft part 4 to be processed;

[0078] Step 5: Send a command to the second solenoid valve 1400 to connect the air circuit of the second cylinder 700, and the second cylinder 700 drives the clamping block 800 to retract, thereby releasing the clamping of the V-shaped clamp 1110 of the heart-shaped clamp component 1100;

[0079] Step 6: See Figure 6 The automated manipulator clamps the small shaft part 4 to be processed which has been clamped by the heart-shaped chuck component 1100, and places it between the two tops of the grinder. When the tail top is tightened, the automated manipulator releases the small shaft part 4 to be processed which has been clamped by the heart-shaped chuck component 1100 and returns it.

[0080] Step 7: The grinding machine headstock dial rotates, so that the lever 6 on the grinding machine contacts the pin 1140 of the heart-shaped chuck component 1100, and the pin 1140 drives the small shaft-like part 4 to be processed, which is clamped by the heart-shaped chuck component 1100, to rotate and start processing;

[0081] Step 8: After the small shaft parts 4 are processed, the automated manipulator clamps the small shaft parts 4 and places the heart-shaped chuck component 1100 between the push rod 900, the clamping block 800, the V-shaped block 300, the upper limit block 400, and the lower limit block 500;

[0082] Step 9: Send a command to the second solenoid valve 1400 to connect the air circuit of the second cylinder 700, and the second cylinder 700 drives the clamping block 800 to move toward the V-shaped block 300, and clamps the heart-shaped clamping head component 1100 together with the V-shaped block 300;

[0083] Step 10: Send a command to the first solenoid valve 1300 to connect the air circuit of the first cylinder 600, and the first cylinder 600 pushes the push rod 900 to extend, so that the rolling sleeve 1000 contacts the second part of the eccentric pressure rod 1120 of the chicken heart chuck component 1100, and pushes the eccentric pressure rod 1120 to rotate eccentrically clockwise around the hinge point between the eccentric pressure rod 1120 and the V-shaped chuck 1110, until the second part of the eccentric pressure rod 1120 contacts the upper limit block 400;

[0084] Step 11: The automated manipulator clamps the processed small shaft part 4 and places it in the product box, completing the automatic clamping and processing of the part.

[0085] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An automatic clamping device for small shaft parts, characterized in that: include: a support plate; a first cylinder mounted on the upper surface of the support plate; A push rod, the push rod is fixed on the movable rod of the first cylinder and is pushed to move by the first cylinder; a second cylinder mounted on the lower surface of the support plate; a clamping block, which is slidably disposed on the support plate and connected to the movable rod on the second cylinder, and is driven to move by the second cylinder; a V-shaped block, the V-shaped block being fixed on the upper surface of the support plate and arranged opposite to the clamping block; an upper limit block, the upper limit block is fixed on the upper surface of the support plate and is arranged opposite to the push rod; a lower limit block, the lower limit block being fixed on the upper surface of the support plate and arranged opposite to the V-shaped block; a first solenoid valve, wherein the air inlet and the air outlet of the first solenoid valve are connected to the air inlet and the air outlet of the first cylinder through an air pipe to control the working state of the first cylinder; a second solenoid valve, the air inlet and the air outlet of the second solenoid valve being connected to the air inlet and the air outlet of the second cylinder through an air pipe to control the working state of the second cylinder; A heart-shaped chuck component is arranged on the upper surface of the support plate and is located between the push rod, the clamping block, the V-shaped block, the upper limit block, and the lower limit block. The heart-shaped chuck component cooperates with the push rod, the clamping block, the V-shaped block, the upper limit block, and the lower limit block to clamp and remove small shaft parts to be processed.

2. The automatic clamping device for small shaft parts according to claim 1 is characterized in that: A rectangular groove is provided on the support plate, and the clamping block passes through the upper surface of the support plate from the lower surface of the support plate through the rectangular groove, and the rectangular groove provides a space for the clamping block to reciprocate.

3. The automatic clamping device for small shaft parts according to claim 1 is characterized in that: The first solenoid valve and the second solenoid valve are both two-position five-way solenoid valves, and the air inlet of the two-position five-way solenoid valve is connected to the air source through an air inlet pipe.

4. The automatic clamping device for small shaft parts according to claim 1 is characterized in that: The first cylinder and the second cylinder are both thin double-shaft cylinders.

5. The automatic clamping device for small shaft parts according to claim 1 is characterized in that: Four support columns are fixed on the support plate, and the support plate is connected to the work surface through the four support columns.

6. The automatic clamping device for small shaft parts according to claim 1 is characterized in that: Waist-shaped grooves are provided on the upper limit block and the lower limit block, and the upper limit block and the lower limit block are respectively installed on the upper surface of the support plate by a first screw and a second screw, and the first screw and the second screw respectively pass through the waist-shaped grooves on the upper limit block and the lower limit block to facilitate the adjustment of the positions of the upper limit block and the lower limit block.

7. The automatic clamping device for small shaft parts according to claim 1 is characterized in that: The end of the push rod in contact with the heart-shaped clamping head component is in a U-shaped structure, and a rolling sleeve is installed on the U-shaped structure through a third screw.

8. An automatic clamping device for small shaft parts according to any one of claims 1 to 7, characterized in that: The chicken heart chuck component comprises: A V-shaped chuck, the V-shaped chuck has an outer cylindrical surface, a clamping hole for clamping a small shaft part to be processed is provided in the center of the V-shaped chuck, and a V-shaped clamping portion is provided in the clamping hole; in addition, a half-moon groove is provided in the middle position of the axial direction of the V-shaped chuck, and the half-moon groove is connected with the clamping hole; the V-shaped chuck is arranged between the clamping block, the lower limit block and the V-shaped block, and the V-shaped chuck is clamped by the cooperation of the clamping block, the lower limit block and the V-shaped block; An eccentric pressure rod, the first part of which is arranged in the semi-lunar groove and hinged to the V-shaped chuck, so that the first part of the eccentric pressure rod can rotate eccentrically in the semi-lunar groove; a cam surface opposite to the V-shaped clamping portion is arranged on the part of the first part of the eccentric pressure rod protruding into the clamping hole; the second part of the eccentric pressure rod extends between the push rod and the upper limit block, and the eccentric pressure rod is driven to rotate by the push rod, and the small shaft parts to be processed are clamped and removed through the cooperation of the cam surface and the V-shaped clamping portion; the upper limit block limits the release position of the eccentric pressure rod; A pin shaft fixed on the outer cylindrical surface of the V-shaped chuck, the pin shaft is arranged between the lower limit block and the V-shaped block, and the movement of the V-shaped chuck in the circumferential direction is limited by the cooperation and limitation of the lower limit block; A tension spring, one end of which is connected to the second portion of the eccentric pressure rod, and the other end of which is connected to the outer cylindrical surface of the V-shaped clamp, is used to drive the eccentric pressure rod to reset.

9. The automatic clamping device for small shaft parts according to claim 8, characterized in that: The tension spring is a cylindrical helical tension spring.

10. A method for grinding and clamping small shaft parts using the automatic clamping device for small shaft parts according to any one of claims 1 to 9, characterized in that: The steps include: Step 1: Sending a command to the second solenoid valve to connect the air circuit of the second cylinder, so that the second cylinder drives the clamping block to move toward the V-shaped block, and clamps the heart-shaped clamping head component together with the V-shaped block; Step 2: Sending a command to the first solenoid valve to connect the air circuit of the first cylinder, the first cylinder pushes the push rod to extend, so that the rolling sleeve contacts the second part of the eccentric pressure rod of the heart-shaped chuck component, and pushes the eccentric pressure rod to rotate eccentrically clockwise around the hinge point between the eccentric pressure rod and the V-shaped chuck, until the second part of the eccentric pressure rod contacts the upper limit block; Step 3: The automated manipulator clamps the part to be processed, and places the lower end of the small shaft part to be processed into the clamping hole of the V-shaped chuck of the chicken heart chuck component; Step 4: Send a command to the first solenoid valve to connect the air circuit of the first cylinder, the first cylinder drives the push rod to retract, and the eccentric pressure rod of the chicken heart chuck component rotates eccentrically counterclockwise around the hinge point of the eccentric pressure rod and the V-shaped chuck under the tension of the tension spring, so that the cam surface on the eccentric pressure rod cooperates with the V-shaped clamping part to jointly press the outer cylindrical surface of the lower end of the small shaft part 4 to be processed; Step 5: Sending a command to the second solenoid valve to connect the gas circuit of the second cylinder, and the second cylinder drives the clamping block to retract, thereby releasing the clamping of the V-shaped clamp of the chicken heart clamp component; Step 6: The automated manipulator clamps the small shaft part to be processed which has been clamped with the chicken heart chuck component, and places it between the two tops of the grinder. After the tail top is tightened, the automated manipulator releases the small shaft part to be processed which has been clamped with the chicken heart chuck component and returns it; Step 7: The grinding machine headstock dial rotates, so that the lever on the grinding machine contacts the pin of the heart-shaped chuck component, and the pin drives the small shaft part to be processed that is clamped by the heart-shaped chuck component to rotate and start processing; Step 8: After the small shaft parts are processed, the automated manipulator clamps the small shaft parts and places the heart-shaped chuck component between the push rod, the clamping block, the V-shaped block, the upper limit block, and the lower limit block; Step 9: Sending a command to the second solenoid valve to connect the air circuit of the second cylinder, so that the second cylinder drives the clamping block to move toward the V-shaped block, and clamps the heart-shaped clamping head component together with the V-shaped block; Step 10: Sending a command to the first solenoid valve to connect the air circuit of the first cylinder, the first cylinder pushes the push rod to extend, so that the rolling sleeve contacts the second part of the eccentric pressure rod of the chicken heart chuck component, and pushes the eccentric pressure rod to rotate eccentrically clockwise around the hinge point between the eccentric pressure rod and the V-shaped chuck until the second part of the eccentric pressure rod contacts the upper limit block; Step 11: The automated robot clamps the processed small shaft parts and places them in the product box, completing the automatic clamping and processing of the parts.

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