Automatic clamping device for small shaft parts

Abstract

The utility model 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 utility model 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 advantages that automatic clamping of parts can be achieved through linkage control over the two electromagnetic valves; 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 utility model relates to the field of machining, especially a kind of automatic clamping device and clamping processing method of small shaft parts grinding. BACKGROUND

[0002] Small shaft parts grinding is widely used in machining manufacturing, and the clamping mode of small shaft parts is usually as shown in the figure during grinding, two ends are clamped by center hole of two ends of small shaft parts through center 2a, 2b, one end of small shaft parts is clamped through center clamping chuck 3 and is connected with the lever 6 on the dial plate 1 in the headstock of grinding machine through clamping screw 5, and small shaft parts is driven to rotate. Figure 1

[0003] With the development and popularization of factory modernization and intelligentization, more and more production lines and equipment use intelligent robots to realize automation of production and processing. Figure 1 The clamping mode shown in the figure is obviously not suitable for automatic clamping. SUMMARY

[0004] One of the technical problems to be solved by the utility model is to provide a simple and reliable automatic clamping device for small shaft parts grinding, which solves the problem that the existing clamping mode of small shaft parts grinding is not conducive to automatic clamping.

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

[0006] The technical problems to be solved by the utility model can be solved by the following technical solutions:

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

[0008] A support plate;

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

[0010] A push rod fixed on the movable rod of the first air cylinder and moved by the first air cylinder;

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

[0012] A clamping block slidingly arranged on the support plate and connected with the movable rod of the second air cylinder and moved by the second air cylinder;

[0013] ​A V-shaped block is fixed on the upper surface of the support plate and is arranged opposite to the clamping block;

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

[0015] A lower limiting block is fixed on the upper surface of the support plate and is arranged opposite to the V-shaped block;

[0016] A first electromagnetic valve, the inlet and outlet of the first electromagnetic valve are connected with the inlet and outlet of the first air cylinder through air pipes, and the working state of the first air cylinder is controlled;

[0017] A second electromagnetic valve, the inlet and outlet of the second electromagnetic valve are connected with the inlet and outlet of the second air cylinder through air pipes, and the working state of the second air cylinder is controlled;

[0018] A center clamping head 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 limiting block and the lower limiting block, and the center clamping head component is matched with the push rod, the clamping block, the V-shaped block, the upper limiting block and the lower limiting block to clamp and take out small shaft parts to be processed.

[0019] In an preferred embodiment of the utility model, a rectangular groove is formed on the support plate, the clamping block is arranged on the upper surface of the support plate through the rectangular groove, and the rectangular groove provides a reciprocating space for the clamping block.

[0020] In an preferred embodiment of the utility model, the first electromagnetic valve and the second electromagnetic valve are both two-position five-way electromagnetic valves, and the inlet of the two-position five-way electromagnetic valve is connected with a gas source through an inlet pipe.

[0021] In an preferred embodiment of the utility model, the first air cylinder and the second air cylinder are both thin double-shaft air cylinders.

[0022] In an preferred embodiment of the utility model, four supporting columns are fixed on the support plate, and the support plate is connected with a workbench surface through the four supporting columns.

[0023] In an preferred embodiment of the utility model, a waist-shaped groove is arranged on the upper limiting block and the lower limiting block, the upper limiting block and the lower limiting block are respectively installed on the upper surface of the support plate through first screws and second screws, and the first screws and the second screws pass through the waist-shaped grooves on the upper limiting block and the lower limiting block respectively, so that the positions of the upper limiting block and the lower limiting block are adjusted conveniently.

[0024] In one preferred embodiment of the utility model, the end of the push rod contacting with the collet chuck part is in U-shaped structure, and a roll sleeve is installed on the U-shaped structure through a third screw.

[0025] In one preferred embodiment of the utility model, the collet chuck part comprises:

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

[0027] An eccentric pressing rod, the first part of the eccentric pressing rod is arranged in the half-moon-shaped groove and is hinged with the V-shaped chuck, so that the first part of the eccentric pressing rod can eccentrically rotate in the half-moon-shaped groove; a cam surface opposite to the V-shaped clamping part is arranged on the part of the first part of the eccentric pressing rod protruding into the clamping hole; the second part of the eccentric pressing rod extends to between the push rod and the upper limiting block, and the rotation of the eccentric pressing rod is driven by the push rod, and the clamping and taking out of the small shaft type part to be processed are realized through the cooperation of the cam surface and the V-shaped clamping part; the release position of the eccentric pressing rod is limited by the upper limiting block;

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

[0029] A tension spring, one end of the tension spring is connected with the second part of the eccentric pressing rod, and the other end is connected with the outer cylindrical surface of the V-shaped chuck, so as to drive the eccentric pressing rod to reset.

[0030] In one preferred embodiment of the utility model, the tension spring is a cylindrical helical tension spring.

[0031] Due to the adoption of the above technical scheme, the utility model has the following beneficial effects:

[0032] 1. Through the linkage control of the two electromagnetic valves, the automatic clamping of the part can be realized.

[0033] 2. The whole device has simple design structure, can ensure the reliability of automatic clamping, and is convenient to use and maintain. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical means, creative features, purposes and effects realized by the utility model, the following will further describe the utility model with reference to the specific drawings.

[0035] Figure 1 It is a schematic diagram of clamping and processing of the existing small shaft parts.

[0036] Figure 2 It is a perspective view of the automatic clamping device for small shaft parts.

[0037] Figure 3 It is a front view of the automatic clamping device for small shaft parts.

[0038] Figure 4 It is a top view of the automatic clamping device for small shaft parts.

[0039] Figure 5 It is a structural schematic diagram of the center clamping head component in the automatic clamping device for small shaft parts.

[0040] Figure 6 It is a schematic diagram of the center clamping head component clamping the small shaft parts clamped on the grinding machine in the automatic clamping device for small shaft parts. DETAILED DESCRIPTION

[0041] In order to make the technical means, creative features, purposes and effects realized by the utility model easy to understand, the following will further describe the utility model with reference to the specific drawings.

[0042] Referring to Figures 2 to 5 , the automatic clamping device for small shaft parts 4 shown in the figure comprises a support plate 100, a support column 200, a V-shaped block 300, an upper limiting block 400, a lower limiting block 500, an upper air cylinder 600 (the aforementioned first air cylinder), a lower air cylinder 700 (the aforementioned second air cylinder), a clamping block 800, a push rod 900, a roller sleeve 1000, a center clamping head component 1100, a left electromagnetic valve 1300 (the aforementioned first electromagnetic valve), and a right electromagnetic valve 1400 (the aforementioned second electromagnetic valve).

[0043] The support plate 100 is a rectangular plate, and a rectangular groove 101 is opened in the middle. The upper surface 102 and the lower surface 102, 103 are provided with four mounting holes 104 and a plurality of screw holes 105.

[0044] The support column 200 has two stepped outer circles, the lower column surface is externally threaded 201 for connecting with the worktable surface, the upper column 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 column surface. The support plate 100 is installed on the four support columns 200 by passing through the four mounting holes 104 and screwing the screws into the screw hole 205.

[0045] The upper air cylinder 600 and the lower air cylinder 700 are respectively installed on the upper surface 102 and the lower surface 103 of the support plate 100, the push rod 900 is installed on the movable rod of the upper air cylinder 600 by screwing, and the clamping block 800 is installed on the movable rod of the lower air cylinder 700 by screwing.

[0046] The side surface 801 of the clamping block 800 is a "7" shaped structure, the front surface 802 is a reversed "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 with the movable rod in the lower air cylinder 700. The clamping block 800 passes through the lower surface 100b of the support plate 100 to the upper surface 100a of the support plate 100 through the rectangular slot 101, and the rectangular slot 101 provides space for the reciprocating motion of the clamping block 800

[0047] The push rod 900 has a U-shaped structure at the end of the center clamping head component 1100, a screw hole 902 is formed in the lower ear 901 of the U-shaped structure, a hole 904 larger than the lower ear is formed in the upper ear 903, a screw 1200 passes through the hole 904 and is screwed into the screw hole 902, and a roller sleeve 1000 is sleeved on the screw 1200. The roller sleeve 1000 is a cylindrical body with a ring structure, has a mounting hole 1001 in the middle, forms a clearance fit with the mounting screw 1200, and the outer cylindrical surface 1002 is a smooth cylindrical surface.

[0048] The left electromagnetic valve 1300 and the right electromagnetic valve 1400 are two-position five-way electromagnetic valves, the gas inlets 1301 and 1401 of the left electromagnetic valve 1300 and the right electromagnetic valve 1400 are connected with the gas source through the gas pipe 1500.

[0049] The upper air cylinder 600 and the lower air cylinder 700 are thin double-shaft air cylinders, the gas inlets and outlets 601, 602, 701 and 702 of the upper air cylinder 600 and the lower air cylinder 700 are respectively connected with the gas outlets 1302, 1302a, 1402 and 1402a of the left electromagnetic valve 1300 and the right electromagnetic valve 1400 through the gas pipes 1500a, 1500b, 1500c and 1500d.

[0050] The V-shaped block 300 has two V-shaped supporting surfaces 301, 302, and two mounting holes 303 on the side surface. Two screws are screwed into two screw holes 105 on the upper surface 102 through the two mounting holes 303, so that the V-shaped block 300 is mounted on the upper surface 102 of the supporting plate 100 and is arranged opposite to the clamping block 800.

[0051] The upper limiting block 400 and the lower limiting block 500 are oblique rectangular blocks, and a waist-shaped slot 401, 501 is formed in the middle. The upper limiting block 400 and the lower limiting block 500 are mounted on the upper surface 102 of the supporting plate 100 through the screws passing through the waist-shaped slots 401, 501, wherein the upper limiting block 400 is arranged opposite to the push rod 900, and the upper limiting block 400 is located on the same side of the clamping block 800 and is arranged opposite to the V-shaped block 300.

[0052] The center core of the V-shaped chuck 1110 is provided with a clamping hole 1111 for clamping the small shaft parts 4 to be machined, and a V-shaped clamping part 1111a is arranged in the clamping hole 1111.

[0053] The V-shaped chuck 1110 has an outer cylindrical surface, and a half-moon-shaped slot 1114 is arranged at the middle position in the axial direction of the V-shaped chuck 1110.

[0054] The pin 1150 is a cylindrical structure, and the outer cylindrical surface 1151 of the pin 1150 is installed in the pin hole 1113 in an interference fit manner and is connected with the V-shaped chuck 1110, serving as the eccentric rotating shaft of the eccentric pressing rod 1120.

[0055] The eccentric pressing rod 1120 is a special-shaped plate structure, and the first part of the eccentric pressing rod 1120 is internally provided with an eccentric hole 1122. The pin 1150 passes through the eccentric hole 1122 and is in clearance fit, so that the first part of the eccentric pressing rod 1120 is hinged with the V-shaped chuck 1110, and the first part of the eccentric pressing rod 1120 can eccentrically rotate in the half-moon-shaped slot 1114.

[0056] The second part of the eccentric pressing rod 1120 is an arc-shaped handle part 1123, and the middle side surface of the arc-shaped handle part 1123 has an ear-shaped structure 1124 and an ear hole 1125.

[0057] The pin shaft 1140 is an elongated cylindrical structure, and an outer cylindrical surface 1141 of the pin shaft 1140 is in interference fit with a pin hole 1116 on an outer cylindrical surface of the V-shaped chuck 1110.

[0058] The tension spring 1130 is a cylindrical helical tension spring, and each of two ends is provided with an ear hook 1131, 1132.

[0059] In use, the V-shaped chuck 1110 is arranged between the clamping block 800, the lower limit block 500 and the V-shaped block 300, and is clamped by the cooperation of the clamping block 800, the lower limit block 500 and the V-shaped block 300; the second part of the eccentric pressing rod 1120 extends between the push rod 900 and the upper limit block 400, and drives the rotation of the eccentric pressing rod 1120 by the driving of the push rod 900, and clamps and takes out the small shaft part 4 to be processed by the cooperation of the cam profile 1121 and the V-shaped clamping part 1111a; the upper limit block 400 limits the release position of the eccentric pressing rod 1120;

[0060] The pin shaft 1140 is arranged between the lower limit block 500 and the V-shaped block 300, and is limited in the circumferential direction by the cooperation of the lower limit block 500 to limit the movement of the V-shaped chuck 1110;

[0061] The basic principle and main features of the utility model and the advantages of the utility model are shown and described. It should be understood by those skilled in the art that the utility model is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and the description in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. An automatic chucking device for small shaft-like parts, characterized in that, The utility model provides a kind of small shaft clamping and taking-out device, including: A support plate; First air cylinder installed on the upper surface of the support plate; A push rod, the push rod is fixed on the movable rod of the first air cylinder, and is pushed by the first air cylinder; Second air cylinder installed on the lower surface of the support plate; A clamping block, the clamping block is slidably arranged on the support plate and is connected with the movable rod on the second air cylinder, and is pushed by the second air cylinder; A V-shaped block, the V-shaped block is fixed on the upper surface of the support plate and is 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 is fixed on the upper surface of the support plate and is arranged opposite to the V-shaped block; A first electromagnetic valve, the inlet and outlet of the first electromagnetic valve are connected with the inlet and outlet of the first air cylinder through air pipe, and the working state of the first air cylinder is controlled; A second electromagnetic valve, the inlet and outlet of the second electromagnetic valve are connected with the inlet and outlet of the second air cylinder through air pipe, and the working state of the second air cylinder is controlled; A center clamping head component, the center clamping head component is arranged on the upper surface of the support plate and is located between the push rod, clamping block, V-shaped block, upper limit block and lower limit block, and the center clamping head component is clamped and taken out to the small shaft parts to be processed by the cooperation of the push rod, clamping block, V-shaped block, upper limit block and lower limit block.

2. The automatic chucking device for small shaft parts according to claim 1, wherein A rectangular slot is formed on the support plate, the clamping block is led out of the upper surface of the support plate from the lower surface of the support plate through the rectangular slot, and the rectangular slot provides space for the reciprocating motion of the clamping block.

3. The automatic chucking device for small shaft parts according to claim 1, wherein The first electromagnetic valve and the second electromagnetic valve are both two-position five-way electromagnetic valves, and the inlet of the two-position five-way electromagnetic valve is connected with the gas source through the inlet pipe.

4. The automatic chucking device for small shaft parts according to claim 1, wherein The first air cylinder and the second air cylinder are both thin double-shaft air cylinders.

5. The automatic chucking device for small shaft parts according to claim 1, wherein Four support columns are fixed on the support plate, and the support plate is connected with the workbench surface through the four support columns.

6. The automatic chucking device for small shaft parts according to claim 1, wherein Waist-shaped grooves are arranged 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 through the first screw and the second screw, the first screw and the second screw pass through the waist-shaped grooves on the upper limit block and the lower limit block respectively, so that the positions of the upper limit block and the lower limit block are adjusted.

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

8. A device for automatic clamping of small shaft-like parts according to any of claims 1 to 7, characterized in that, The center clamping head component includes: A V-shaped chuck, the V-shaped chuck has an outer cylindrical surface, a clamping hole for clamping the small shaft parts to be processed is arranged in the center of the V-shaped chuck, and a V-shaped clamping part is arranged in the clamping hole;In addition, a half-moon-shaped groove is arranged at the middle position of the axial direction of the V-shaped chuck, and the half-moon-shaped groove is through 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 compression rod, a first part of the eccentric compression rod is arranged in the half-moon shaped groove and is hinged with the V-shaped chuck, so that the first part of the eccentric compression rod can eccentrically rotate in the half-moon shaped groove; a cam surface opposite to the V-shaped clamping part is arranged on the part of the first part of the eccentric compression rod protruding into the clamping hole; a second part of the eccentric compression rod extends between the push rod and the upper limiting block, and the rotation of the eccentric compression rod is driven by the push rod, and the small shaft type part to be machined is clamped and taken out through the cooperation of the cam surface and the V-shaped clamping part; the release position of the eccentric compression rod is limited by the upper limiting block; A pin shaft fixed on the outer cylindrical surface of the V-shaped chuck, the pin shaft is arranged between the lower limiting block and the V-shaped block, and the movement of the V-shaped chuck in the circumferential direction is limited through the cooperation of the lower limiting block; A tension spring, one end of the tension spring is connected with the second part of the eccentric compression rod, and the other end is connected with the outer cylindrical surface of the V-shaped chuck, so as to drive the eccentric compression rod to reset.

9. The automatic chucking device for small shaft parts according to claim 8, wherein The tension spring is a cylindrical helical tension spring.

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