Clamping device for piston machining
By using a cylinder and fluid pressurization device to apply uniform force to the piston in the piston machining device, and combining positioning blocks and slide rails to position the clamping arm, the problem of piston skew caused by inconsistent clamping arm displacement is solved, thus improving the accuracy and safety of piston machining.
Patent Information
- Application Number
- CN202520410248.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-11
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2035-03-11
AI Technical Summary
Existing piston clamping devices have independent drive units, resulting in inconsistent clamping arm displacement distances, which causes piston misalignment and affects machining quality.
The same force is applied to the two plugs by the cylinder and the fluid pressurization device, so that the displacement distance of the two plugs in the cylinder is the same, ensuring that the displacement distance of the two clamping arms is consistent. The clamping arms are positioned by the positioning block and multiple slide rails to prevent deflection.
This achieves synchronous movement of the clamping arms, preventing piston deflection and improving the pass rate of piston machining and the safety and reliability of the equipment.
Smart Images
Figure CN223802444U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to piston processing equipment technical field especially relates to a clamping device for piston processing. BACKGROUND
[0002] Piston is the machine part reciprocating in cylinder, its main function is to bear the gas or liquid pressure in cylinder, and this force is transmitted through piston rod, due to design requirement, the eye is often drilled, ring groove and polishing treatment in the process of piston processing, so the clamping mechanism is needed to clamp the piston to facilitate the processing of the piston.
[0003] And the existing piston clamping device often adopts several clamping arms arranged around the piston in turn to clamp, and the clamping arms are driven to approach or move away from the piston by electric push rod or other driving devices, but each driving device is independently driven, and the displacement distance of the clamping arms is different, which leads to the piston deflection, the deviation between the piston axis and the center line, and the reduction of the piston qualification rate. UTILITY MODEL CONTENT
[0004] The utility model provides a kind of clamping device for piston processing by cylinder and fluid pressurizing device to exert same force on two piston bodies, so that the displacement distance of two piston bodies in cylinder is same, to ensure that the displacement distance of two clamping arms is same, and then prevent the piston clamped by two clamping arms from deflection, which is simple and efficient, safe and reliable, and easy to operate.
[0005] The utility model is realized by the following technical schemes, provides a kind of clamping device for piston processing, including machine body, fixedly equipped with slide rail on machine body, oppositely arranged clamping arm is slid on slide rail, and piston clamping space is formed between clamping arm;Fixedly equipped with cylinder along the axial extension of slide rail on machine body, and the piston body is slid and is attached to the inner wall of cylinder in two sides in cylinder, and two piston bodies are respectively and corresponding clamping arm are fixedly connected;Cylinder is communicated with fluid pressurizing device, and the communication part of cylinder and fluid pressurizing device is located between two piston bodies or respectively located on both sides of cylinder;Exert same force on two piston bodies by cylinder and fluid pressurizing device, so that the displacement distance of two piston bodies in cylinder is same, to ensure that the displacement distance of two clamping arms is same, and then prevent the piston clamped by two clamping arms from deflection.
[0006] As optimization, fixedly equipped with positioning block along the axial extension of slide rail on slide rail, and positioning block and clamping arm are fixedly connected;Prevent the deflection of clamping arm when sliding on slide rail by positioning block.
[0007] As optimization, fixedly equipped with several parallel slide rails on machine body, and clamping arm is slid on slide rail respectively;Positioning is carried out to clamping arm by multiple slide rails, to prevent the deflection of clamping arm when sliding on slide rail.
[0008] As an optimization, the two plugs are fixedly connected by connecting arms and corresponding clamping arms, and the two connecting arms are arranged opposite each other; the connecting arms of the same size and shape and arranged opposite each other ensure that the piston is subjected to consistent force, and avoid inconsistent displacement distance of the piston under the drive of the fluid pressurization device.
[0009] As an optimization, the distance between the two pistons and the cylinder sidewall is the same; by ensuring that the distance between the two pistons and the cylinder sidewall is the same, the pressure between the two pistons and the cylinder sidewall is kept consistent, thus avoiding inconsistent displacement distances of the pistons under the drive of the fluid pressurization device.
[0010] The beneficial effects of this utility model are as follows: by applying the same force to the two plugs through the cylinder and the fluid pressurization device, the displacement distance of the two plugs in the cylinder is the same, thereby ensuring that the displacement distance of the two clamping arms is the same, and thus preventing the pistons clamped by the two clamping arms from deviating; the positioning block prevents the clamping arms from deviating when sliding on the slide rail; the clamping arms are positioned by multiple slide rails to prevent the clamping arms from deviating when sliding on the slide rail. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the structure of the present invention (Example 1);
[0012] Figure 2 This is a schematic diagram of the structure of the present invention (Example 2);
[0013] As shown in the figure:
[0014] 1. Body, 2. Slide rail, 3. Positioning block, 4. Clamping arm, 5. Cylinder, 6. Plug, 7. Fluid pressurization device, 8. Piston, 9. Connecting arm. Detailed Implementation
[0015] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.
[0016] Example 1:
[0017] like Figure 1 The present invention discloses a clamping device for piston processing, comprising a body 1, a slide rail 2 fixedly mounted on the body 1, and clamping arms 4 slidably mounted on the slide rail 2, forming a clamping space for the piston 8 between the clamping arms 4; a cylinder 5 extending axially along the slide rail 2 fixedly mounted on the body 1, and plugs 6 slidably mounted on both sides of the cylinder 5 and fitted against the inner wall of the cylinder 5, with the two plugs 6 respectively fixedly connected to the corresponding clamping arms 4; a fluid pressurizing device 7 connected to the cylinder 5, and the connection between the cylinder 5 and the fluid pressurizing device 7 is located between the two plugs 6 or on both sides of the cylinder 5.
[0018] The slide rail 2 extends horizontally, and the clamping arm 4 extends horizontally with its axis perpendicular to the axis of the slide rail 2. The distance between the two plugs 6 and the inner walls on both sides of the cylinder 5 is the same. The connecting parts of the cylinder 5 and the fluid pressurization device 7 are located on both sides of the cylinder 5, and the plugs 6 and the clamping arms 4 on the same side are fixedly connected. The name of the plug 6 inside the cylinder 5 should be piston. To avoid conflict with the piston 8 in the patent title "A Clamping Device for Piston Processing", which would lead to unclear description, it is renamed plug 6. The clamping end of the clamping arm 4 is provided with an arc-shaped clamping block, and a clamping space is formed between the two clamping blocks.
[0019] Piston 8 is placed between two clamping arms 4; the fluid pressurizing device 7 is activated, and the fluid pressurizing device 7 pressurizes the cylinder 5. Under the action of pressure, the two pistons 8 slide towards each other in the cylinder 5 and drive the clamping arms 4 to slide towards each other on the slide rail 2 until the clamping arms 4 complete the clamping of the piston 8, and the fluid pressurizing device 7 is turned off.
[0020] After piston 8 completes processing, the fluid pressurization device 7 is activated. The fluid pressurization device 7 depressurizes the cylinder 5. Under the pressure, the two pistons 8 slide in opposite directions in the cylinder 5 and drive the clamping arm 4 to slide in opposite directions on the slide rail 2 until the piston 8 disengages from the clamping arm 4. Then the fluid pressurization device 7 is turned off.
[0021] like Figure 1 The slide rail 2 shown is provided with a positioning block 3 extending along the axial direction of the slide rail 2, and the positioning block 3 is fixedly connected to the clamping arm 4.
[0022] The piston 8 drives the clamping arm 4 to move, and the clamping arm 4 drives the positioning block 3 to slide on the slide rail 2. The positioning block 3 prevents the clamping arm 4 from tilting.
[0023] like Figure 1 Several parallel slide rails 2 are fixed on the body 1 shown, and the clamping arms 4 are slidably mounted on the slide rails 2 respectively.
[0024] The piston 8 drives the clamping arm 4 to slide simultaneously on each slide rail 2. Each slide rail 2 positions the clamping arm 4 to prevent the clamping arm 4 from tilting.
[0025] like Figure 1 The two plugs 6 shown are fixedly connected by connecting arms and corresponding clamping arms 4, and the two connecting arms 9 are arranged opposite each other.
[0026] Piston 8 drives clamping arm 4 to move in the opposite direction via connecting arm 9.
[0027] like Figure 1 The distance between the two plugs 6 and the sidewalls of the cylinder 5 is the same; the space between the two plugs 6 and the sidewalls of the cylinder 5 on the side where the plugs are located is the same in size and shape and is arranged opposite to each other.
[0028] The fluid pressurizing device 7 is started, the fluid pressurizing device 7 pressurizes the cylinder 5, the pressure between the two pistons 6 and the cylinder 5 side wall on the side of the piston is always consistent, and the two pistons 8 slide in the cylinder 5 under the action of the pressure and drive the clamping arms 4 to move towards each other.
[0029] In the actual production process, the piston 8 is placed between the two clamping arms 4; the fluid pressurizing device 7 is started, the fluid pressurizing device 7 pressurizes the cylinder 5, the two pistons 8 slide in the cylinder 5 under the action of the pressure and drive the clamping arms 4 to move towards each other through the connecting arm 9; at the same time, the clamping arms 4 drive the positioning blocks 3 to slide on the slide rails 2, the slide rails 2 and the positioning blocks 3 position the clamping arms 4, so that the clamping arms 4 are prevented from being deflected; until the clamping arms 4 complete clamping of the piston 8, the fluid pressurizing device 7 is closed.
[0030] After the piston 8 is machined, the fluid pressurizing device 7 is started, the fluid pressurizing device 7 depressurizes the cylinder 5, the two pistons 8 slide in the cylinder 5 under the action of the pressure and drive the clamping arms 4 to move away from each other through the connecting arm 9; at the same time, the clamping arms 4 drive the positioning blocks 3 to slide on the slide rails 2, the slide rails 2 and the positioning blocks 3 position the clamping arms 4, so that the clamping arms 4 are prevented from being deflected; until the piston 8 is separated from the clamping arms 4, the fluid pressurizing device 7 is closed.
[0031] Example 2:
[0032] As Figure 2 The clamping device for piston machining of the utility model, the difference between example 2 and example 1 lies in that the communication part of the cylinder 5 and the fluid pressurizing device 7 is located between the two pistons 6, and the piston 6 and the clamping arm 4 are fixed alternately.
[0033] In the actual production process, the piston 8 is placed between the two clamping arms 4; the fluid pressurizing device 7 is started, the fluid pressurizing device 7 pressurizes the cylinder 5, the two pistons 8 slide in the cylinder 5 under the action of the pressure and drive the clamping arms 4 to move towards each other through the connecting arm 9; at the same time, the clamping arms 4 drive the positioning blocks 3 to slide on the slide rails 2, the slide rails 2 and the positioning blocks 3 position the clamping arms 4, so that the clamping arms 4 are prevented from being deflected; until the clamping arms 4 complete clamping of the piston 8, the fluid pressurizing device 7 is closed.
[0034] After the piston 8 is machined, the fluid pressurizing device 7 is started, the fluid pressurizing device 7 depressurizes the cylinder 5, the two pistons 8 slide in the cylinder 5 under the action of the pressure and drive the clamping arms 4 to move away from each other through the connecting arm 9; at the same time, the clamping arms 4 drive the positioning blocks 3 to slide on the slide rails 2, the slide rails 2 and the positioning blocks 3 position the clamping arms 4, so that the clamping arms 4 are prevented from being deflected; until the piston 8 is separated from the clamping arms 4, the fluid pressurizing device 7 is closed.
[0035] Of course, the above description is also not limited to the above examples, the technical features not described in the utility model can be realized by or using the prior art, which will not be repeated here; the above embodiments and drawings are only used to illustrate the technical scheme of the utility model and are not a limitation on the utility model, the utility model has been described in detail with reference to the preferred embodiments, and those skilled in the art should understand that the changes, modifications, additions or replacements made by those skilled in the art within the essential scope of the utility model do not deviate from the purpose of the utility model, and should also belong to the protection scope of the claims of the utility model.
Claims
1. A clamping device for piston machining, comprising a body (1), a slide rail (2) fixedly mounted on the body (1), and clamping arms (4) slidably mounted on the slide rail (2), forming a piston (8) clamping space between the clamping arms (4); characterized in that: The machine body (1) is provided with a cylinder body (5) extending along the slide rail (2) in the axial direction, the cylinder body (5) is provided with two plug bodies (6) on the two sides respectively, the two plug bodies (6) are respectively provided in close contact with the inner wall of the cylinder body (5), and the two plug bodies (6) are respectively fixedly connected with the corresponding clamping arms (4); the cylinder body (5) is communicated with a fluid pressurizing device (7), and the communication part of the cylinder body (5) and the fluid pressurizing device (7) is located between the two plug bodies (6) or is respectively located on the two sides of the cylinder body (5).
2. The clamping device for machining of pistons according to claim 1, characterized in that: The slide rail (2) is provided with a positioning block (3) extending along the slide rail (2) in the axial direction, and the positioning block (3) is fixedly connected with the clamping arm (4).
3. The clamping device for machining of pistons according to claim 1, characterized in that: The machine body (1) is provided with a plurality of parallel slide rails (2), and the clamping arms (4) are respectively slidably arranged on the slide rails (2).
4. The clamping device for machining of pistons according to claim 1, characterized in that: The two plug bodies (6) are respectively fixedly connected with the corresponding clamping arms (4) through connecting arms, and the two connecting arms (9) are oppositely arranged.
5. The clamping device for machining of pistons according to claim 1, characterized in that: The distance between the two plug bodies (6) and the side wall of the cylinder body (5) is the same.